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Harvard University
1.
McLaughlin, Megan.
Twelve Month Outcomes of a Cluster Randomized Controlled Trial of Community-Based Accompaniment With Supervised Antiretrovirals in Lima, Peru.
Degree: Doctor of Medicine, 2017, Harvard University
URL: http://nrs.harvard.edu/urn-3:HUL.InstRepos:40620766
► We conducted a cluster-randomized trial to estimate effects of directly observed-combination antiretroviral therapy (DOT-cART) on retention with viral suppression among HIV-positive adults in Peru. We…
(more)
▼ We conducted a cluster-randomized trial to estimate effects of directly observed-combination antiretroviral therapy (DOT-cART) on retention with viral suppression among HIV-positive adults in Peru. We randomly allocated facilities to receive the 12-month intervention plus the standard of care, including adherence support provided through accompaniment. In the intervention arm, health workers supervised doses, twice daily, and accompanied patients to appointments. Among 356 patients, intention-to-treat analyses showed no statistically significant benefit of DOT, relative to no-DOT, at 12 or 24-months (adjusted probability of primary outcome: 0.81 vs. 0.73 and 0.76 vs. 0.68, respectively). A statistically significant benefit of DOT was found in per-protocol and as-treated analyses at 12-months (0.83 for DOT vs. 0.73 for no DOT, p-value: 0.02 per-protocol, 0.01 as-treated), but not 24-months. Rates of retention with viral suppression were high in both arms. Among adults receiving robust adherence support, the added effect of time-limited DOT-cART, if any, is small-to-moderate.
Scholarly Project
Subjects/Keywords: HIV; DOT
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APA (6th Edition):
McLaughlin, M. (2017). Twelve Month Outcomes of a Cluster Randomized Controlled Trial of Community-Based Accompaniment With Supervised Antiretrovirals in Lima, Peru. (Doctoral Dissertation). Harvard University. Retrieved from http://nrs.harvard.edu/urn-3:HUL.InstRepos:40620766
Chicago Manual of Style (16th Edition):
McLaughlin, Megan. “Twelve Month Outcomes of a Cluster Randomized Controlled Trial of Community-Based Accompaniment With Supervised Antiretrovirals in Lima, Peru.” 2017. Doctoral Dissertation, Harvard University. Accessed April 18, 2021.
http://nrs.harvard.edu/urn-3:HUL.InstRepos:40620766.
MLA Handbook (7th Edition):
McLaughlin, Megan. “Twelve Month Outcomes of a Cluster Randomized Controlled Trial of Community-Based Accompaniment With Supervised Antiretrovirals in Lima, Peru.” 2017. Web. 18 Apr 2021.
Vancouver:
McLaughlin M. Twelve Month Outcomes of a Cluster Randomized Controlled Trial of Community-Based Accompaniment With Supervised Antiretrovirals in Lima, Peru. [Internet] [Doctoral dissertation]. Harvard University; 2017. [cited 2021 Apr 18].
Available from: http://nrs.harvard.edu/urn-3:HUL.InstRepos:40620766.
Council of Science Editors:
McLaughlin M. Twelve Month Outcomes of a Cluster Randomized Controlled Trial of Community-Based Accompaniment With Supervised Antiretrovirals in Lima, Peru. [Doctoral Dissertation]. Harvard University; 2017. Available from: http://nrs.harvard.edu/urn-3:HUL.InstRepos:40620766

NSYSU
2.
Tsui, Po-Ting.
Study on the Optical Characteristics of Quantum Dots in Coupled Cavity Structures.
Degree: Master, Electro-Optical Engineering, 2010, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0728110-114433
► In this work, we studied the optical characteristics of the coupled double DBR structure. We use the conventional transfer matrix simulation to find the intermediate…
(more)
▼ In this work, we studied the optical characteristics of the coupled double DBR structure. We use the conventional transfer matrix simulation to find the intermediate multilayer periods (NC), and control the position of the transmission peak and stop band. Sample is grown by solid source molecular beam epitaxy (MBE) on n+GaAs (001) substrate, and the InGaAs QDs (quantum dots) are grown in the coupled cavity structure. The 23 periods of DBR multilayer, GaAs (91.8 nm) / AlAs (108.1 nm), obtain 99.5% reflectivity in the 1260 nm wavelength by the simulation. After the simulation from the conventional transfer matrix method, we choose NC = 13.5, the position of the transmission peak are at 1177 and 1188 nm, and optical frequency difference = 2.27 THz (Î=11 nm) in this study.From PL spectra, we observed interference between the enhanced light fields of the two cavity modes and the agreement between measurement and simulation. This structure is potential to be a compact terahertz emission device or vertical cavity surface emitting laser in room temperature.
Advisors/Committee Members: Tsong-Sheng Lay (committee member), Jian-Jang Huang (chair), Yi-Jen Chiu (chair), Chien-Chung Lin (chair), Chin-Ping Yu (chair).
Subjects/Keywords: coupled cavity; DBR; quantum dot
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APA ·
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APA (6th Edition):
Tsui, P. (2010). Study on the Optical Characteristics of Quantum Dots in Coupled Cavity Structures. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0728110-114433
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Tsui, Po-Ting. “Study on the Optical Characteristics of Quantum Dots in Coupled Cavity Structures.” 2010. Thesis, NSYSU. Accessed April 18, 2021.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0728110-114433.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Tsui, Po-Ting. “Study on the Optical Characteristics of Quantum Dots in Coupled Cavity Structures.” 2010. Web. 18 Apr 2021.
Vancouver:
Tsui P. Study on the Optical Characteristics of Quantum Dots in Coupled Cavity Structures. [Internet] [Thesis]. NSYSU; 2010. [cited 2021 Apr 18].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0728110-114433.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Tsui P. Study on the Optical Characteristics of Quantum Dots in Coupled Cavity Structures. [Thesis]. NSYSU; 2010. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0728110-114433
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Alberta
3.
Lockwood, Ross A.
Free-standing Silicon Quantum Dot Photoluminescence.
Degree: PhD, Department of Physics, 2015, University of Alberta
URL: https://era.library.ualberta.ca/files/fj236495k
► This thesis focuses on the photoluminescence (PL) of free-standing silicon quan- tum dots (QDs). Large changes in the emission spectrum were found to occur when…
(more)
▼ This thesis focuses on the photoluminescence (PL) of
free-standing silicon quan- tum dots (QDs). Large changes in the
emission spectrum were found to occur when the QDs were exposed to
different environments while undergoing short-wavelength laser
irradiation, a phenomenon that was the main focus of this thesis.
In particular, the PL can change in intensity by orders of
magnitude, either increasing or decreas- ing, depending on the
gases or vapors present in the surrounding atmosphere. The presence
of chemical species with -OH groups produced especially strong and
rapid effects, when in the presence of oxygen. This process was
found to feature a rapid reconstruction and oxidation of the Si-QD
surface, as measured by Fourier transform infrared spectroscopy
(FTIR) and electron spin resonance (ESR). A model for the physical
and chemical changes that silicon QDs undergo during these
surprisingly strong changes in the PL intensity was developed,
factoring in the results from a range of experiments. The effects
reported here suggest that silicon QDs could be used to "sense"
changes in the surrounding atmosphere. Therefore, a silicon-QD-
based fiber optic sensor was demonstrated and its viability for
detecting ethanol and water vapors was established. Finally, the
outstanding challenges and potential for future research were
discussed in light of improving the selectivity and detection
limits for sensors based on the luminescence of free-standing
silicon QDs.
Subjects/Keywords: Silicon; Quantum Dot; Photoluminescence
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Lockwood, R. A. (2015). Free-standing Silicon Quantum Dot Photoluminescence. (Doctoral Dissertation). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/fj236495k
Chicago Manual of Style (16th Edition):
Lockwood, Ross A. “Free-standing Silicon Quantum Dot Photoluminescence.” 2015. Doctoral Dissertation, University of Alberta. Accessed April 18, 2021.
https://era.library.ualberta.ca/files/fj236495k.
MLA Handbook (7th Edition):
Lockwood, Ross A. “Free-standing Silicon Quantum Dot Photoluminescence.” 2015. Web. 18 Apr 2021.
Vancouver:
Lockwood RA. Free-standing Silicon Quantum Dot Photoluminescence. [Internet] [Doctoral dissertation]. University of Alberta; 2015. [cited 2021 Apr 18].
Available from: https://era.library.ualberta.ca/files/fj236495k.
Council of Science Editors:
Lockwood RA. Free-standing Silicon Quantum Dot Photoluminescence. [Doctoral Dissertation]. University of Alberta; 2015. Available from: https://era.library.ualberta.ca/files/fj236495k
4.
宮本, 敦史.
変分ベイズ法を用いたNIRS-DOTの逆問題解法 : Variational Bayes approach for NIRS-DOT inverse problem; ヘン ブン ベイズホウ オ モチイタ NIRS-DOT ノ ギャク モンダイ カイホウ.
Degree: Nara Institute of Science and Technology / 奈良先端科学技術大学院大学
URL: http://hdl.handle.net/10061/5688
Subjects/Keywords: NIRS-DOT
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APA ·
Chicago ·
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to Zotero / EndNote / Reference
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APA (6th Edition):
宮本, . (n.d.). 変分ベイズ法を用いたNIRS-DOTの逆問題解法 : Variational Bayes approach for NIRS-DOT inverse problem; ヘン ブン ベイズホウ オ モチイタ NIRS-DOT ノ ギャク モンダイ カイホウ. (Thesis). Nara Institute of Science and Technology / 奈良先端科学技術大学院大学. Retrieved from http://hdl.handle.net/10061/5688
Note: this citation may be lacking information needed for this citation format:
No year of publication.
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
宮本, 敦史. “変分ベイズ法を用いたNIRS-DOTの逆問題解法 : Variational Bayes approach for NIRS-DOT inverse problem; ヘン ブン ベイズホウ オ モチイタ NIRS-DOT ノ ギャク モンダイ カイホウ.” Thesis, Nara Institute of Science and Technology / 奈良先端科学技術大学院大学. Accessed April 18, 2021.
http://hdl.handle.net/10061/5688.
Note: this citation may be lacking information needed for this citation format:
No year of publication.
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
宮本, 敦史. “変分ベイズ法を用いたNIRS-DOTの逆問題解法 : Variational Bayes approach for NIRS-DOT inverse problem; ヘン ブン ベイズホウ オ モチイタ NIRS-DOT ノ ギャク モンダイ カイホウ.” Web. 18 Apr 2021.
Note: this citation may be lacking information needed for this citation format:
No year of publication.
Vancouver:
宮本 . 変分ベイズ法を用いたNIRS-DOTの逆問題解法 : Variational Bayes approach for NIRS-DOT inverse problem; ヘン ブン ベイズホウ オ モチイタ NIRS-DOT ノ ギャク モンダイ カイホウ. [Internet] [Thesis]. Nara Institute of Science and Technology / 奈良先端科学技術大学院大学; [cited 2021 Apr 18].
Available from: http://hdl.handle.net/10061/5688.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
No year of publication.
Council of Science Editors:
宮本 . 変分ベイズ法を用いたNIRS-DOTの逆問題解法 : Variational Bayes approach for NIRS-DOT inverse problem; ヘン ブン ベイズホウ オ モチイタ NIRS-DOT ノ ギャク モンダイ カイホウ. [Thesis]. Nara Institute of Science and Technology / 奈良先端科学技術大学院大学; Available from: http://hdl.handle.net/10061/5688
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
No year of publication.

University of Rochester
5.
Evans, Christopher M. (1982 - ).
Insight into quantum dot synthesis : metal-metal bond
formation and particle growth.
Degree: PhD, 2011, University of Rochester
URL: http://hdl.handle.net/1802/16266
► The essential components in the synthesis of high-quality II-VI and IV-VI QDs have remained largely unchanged for 20 years; typically employing tertiary phosphine chalcogenides and…
(more)
▼ The essential components in the synthesis of
high-quality II-VI and IV-VI QDs have remained largely unchanged
for 20 years; typically employing tertiary phosphine chalcogenides
and metal salts as the reactive precursors. The reaction mechanism
responsible for monomer nucleation was investigated. Pure tertiary
phosphine selenide sources (e.g. trioctylphosphine selenide
(TOPSe)) were surprisingly found to be unreactive with metal
carboxylates and incapable of yielding QDs. Rather, small
quantities of secondary phosphines are entirely responsible for the
nucleation of QDs at low temperatures (< 200 °C); their low
concentrations account for poor synthetic conversion yields.
Also,
we have reported the synthesis and characterization of novel,
ultra-small PbSe magic-sized nanoclusters (MSCs). Unlike the
syntheses of high-quality semiconductor nanoparticles, the MSC
synthesis is straightforward, occurring at room temperature in air
over several hours. MSCs have core diameters < 2 nm and
fluoresce in the near-infrared (900 nm) with remarkable quantum
efficiencies consistently greater than 50%. The relatively slow
growth of MSCs allows for a significant scale up of reaction
volumes. Transfer to aqueous solvents has also been demonstrated,
establishing MSCs as a potential new fluorophore for applications
in biological imaging.
Ostwald ripening represents a major
contributor to semiconductor quantum dot growth under a wide range
of experimental conditions. Quantum dot concentrations and
diameters are shown to change dramatically at temperatures widely
encountered in growth and processing procedures. Further, data is
provided that supports the role of ligand in ripening and an
attempt is made to understand its chemical pathway. Finally,
kinetic data shows that PbSe QDs ripen significantly faster than
CdSe QDs. Density functional calculations agree with the
experimental results and provide insight into their origin.
A
secondary phosphine chalcogenide (DPPSe) was investigated as a
potential anion source for the production of both PbSe and CdSe
QDs. Unfortunately, reactions were found only capable of producing
MSCs, albeit with quantitative conversion yields. Observation of
reaction kinetics emphasized the importance of controlling
nucleation rates for size-control. Methodologies are presented that
effectively separate nucleation from growth; which allow for the
predictable and reproducible synthesis of specific-sized
QDs.
Subjects/Keywords: Nanocrystal; Quantum dot; Mechanism
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Evans, C. M. (. -. ). (2011). Insight into quantum dot synthesis : metal-metal bond
formation and particle growth. (Doctoral Dissertation). University of Rochester. Retrieved from http://hdl.handle.net/1802/16266
Chicago Manual of Style (16th Edition):
Evans, Christopher M (1982 - ). “Insight into quantum dot synthesis : metal-metal bond
formation and particle growth.” 2011. Doctoral Dissertation, University of Rochester. Accessed April 18, 2021.
http://hdl.handle.net/1802/16266.
MLA Handbook (7th Edition):
Evans, Christopher M (1982 - ). “Insight into quantum dot synthesis : metal-metal bond
formation and particle growth.” 2011. Web. 18 Apr 2021.
Vancouver:
Evans CM(-). Insight into quantum dot synthesis : metal-metal bond
formation and particle growth. [Internet] [Doctoral dissertation]. University of Rochester; 2011. [cited 2021 Apr 18].
Available from: http://hdl.handle.net/1802/16266.
Council of Science Editors:
Evans CM(-). Insight into quantum dot synthesis : metal-metal bond
formation and particle growth. [Doctoral Dissertation]. University of Rochester; 2011. Available from: http://hdl.handle.net/1802/16266

Cornell University
6.
Bartnik, Adam.
The Dependence Of Lead-Salt Nanocrystal Properties On Morphology And Dielectric Environment.
Degree: PhD, Applied Physics, 2011, Cornell University
URL: http://hdl.handle.net/1813/29113
► The IV-VI semiconductors, and specifically the lead-salts (PbS, PbSe, and PbTe), are a natural choice for nanocrystal science. In nanocrystals, because of their narrow band…
(more)
▼ The IV-VI semiconductors, and specifically the lead-salts (PbS, PbSe, and PbTe), are a natural choice for nanocrystal science. In nanocrystals, because of their narrow band gap, small effective masses, and large dielectric constants, they offer a unique combination of both strong confinement and strong dielectric contrast with their environment. Studying how these two effects modify optical and electrical properties of nanocrystals will be the topic of this dissertation. We begin with a summary of the synthesis of high-quality PbS and PbSe nanocrystals. Special care is taken to explain the chemical procedures in detail to an audience not expected to have significant prior chemistry knowledge. The synthesized nanocrystals have bright and tunable emission that spans the edge of the visible to the near-IR spectrum (700-1800 nm), and they are capped with organic ligands making them easily adaptable to different substrates or hosts . This combination of high optical quality and flexible device engineering make them extremely desirable for application. Moving beyond single-material nanocrystals, we next explore nanocrystal heterostructures, specifically materials with a spherical core of one semiconductor and a shell of another. Core-shell structures are commonly used in nanocrystals as a method to separate the core material, where the electrons and holes are expected to stay, from interfering effects at the surface. This typically results in improvements in stability and fluorescence quantum efficiency. To that end, we develop a model to explain how confinement plays out across abrupt changes in material, focusing on the optical and electrical properties of recently synthesized PbSe/PbS core-shell quantum dots. We show that for typical sizes of these nanocrystals, a novel type of nanocrystal heterostructure is created, where electrons and holes extend uniformly across the abrupt material boundary, and the shell does not act as a protecting layer. For very large sizes not yet achievable, we expect that the electron and hole will separate in different layers, with potentially measurable effects. Comparisons are made to optical and electrical measurements on these structures, showing good agreement. Next, we explore how shape can impact nanocrystal properties, on top of their intrinsic size or material dependence. By looking at cylindrically shaped nanocrystals, called "nanorods," with aspect ratios 10, we explore how having a slightly extended dimension can impact nanocrystal properties. A model is developed to explain their electronic structure, with surprising results. Foremost is that along the extended dimension, electrons and holes are strongly electrically bound, not with each other directly, but with their image charges in the outer host dielectric material. Nevertheless, the energy spectra of the excitons remains nearly hostindependent, with the effects of this strong binding instead seen in a redistribution of transition oscillator strength. To test the model, we develop a novel synthesis of high quality PbSe…
Advisors/Committee Members: Wise, Frank William (chair), Gaeta, Alexander L. (committee member), Lipson, Michal (committee member).
Subjects/Keywords: lead-salt; nanocrystal; quantum dot
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Bartnik, A. (2011). The Dependence Of Lead-Salt Nanocrystal Properties On Morphology And Dielectric Environment. (Doctoral Dissertation). Cornell University. Retrieved from http://hdl.handle.net/1813/29113
Chicago Manual of Style (16th Edition):
Bartnik, Adam. “The Dependence Of Lead-Salt Nanocrystal Properties On Morphology And Dielectric Environment.” 2011. Doctoral Dissertation, Cornell University. Accessed April 18, 2021.
http://hdl.handle.net/1813/29113.
MLA Handbook (7th Edition):
Bartnik, Adam. “The Dependence Of Lead-Salt Nanocrystal Properties On Morphology And Dielectric Environment.” 2011. Web. 18 Apr 2021.
Vancouver:
Bartnik A. The Dependence Of Lead-Salt Nanocrystal Properties On Morphology And Dielectric Environment. [Internet] [Doctoral dissertation]. Cornell University; 2011. [cited 2021 Apr 18].
Available from: http://hdl.handle.net/1813/29113.
Council of Science Editors:
Bartnik A. The Dependence Of Lead-Salt Nanocrystal Properties On Morphology And Dielectric Environment. [Doctoral Dissertation]. Cornell University; 2011. Available from: http://hdl.handle.net/1813/29113

University of Waterloo
7.
Dashmiz, Shadi.
Quantum Dots for Intermediate Band in Solar Cells.
Degree: 2013, University of Waterloo
URL: http://hdl.handle.net/10012/7316
► The commercially available solar cells suffer from low efficiency and high cost. This would avoid presence of solar cells as a secure energy resource in…
(more)
▼ The commercially available solar cells suffer from low efficiency and high cost. This would avoid presence of solar cells as a secure energy resource in the market. Problems stem from two facts. Firstly, band gap of materials deployed for cell fabrication do not match the solar spectrum. Secondly, harvesting all the generated electrons is imperfect due to presence of many non-radiative recombination processes and, thermalization of electrons. To transcend these deficiencies, third generation of solar has been introduced. This new generation renders a whole new concept both in design and materials of solar cells scope.
One of new introduction to solar cell field is Quantum Dot (QD). QD offers a broad range of tunability. The optical and electrical properties of QDs can be altered by choice of material, size and shape; therefore; they have great potential for high efficiency cell fabrication. QDs are mainly grown via MBE or synthesized via Colloidal solutions. QDs could be integrated as a part of one of new and promising third generation cells, named Intermediate Band Solar Cells.
QDs could be employed as the intermediate level. If MBE is the selected method for cell fabrication, QDs would grow in a matrix of barrier material accompanied with a wetting layer. Wetting layer would disturb the ideal condition predicted in theory for gaining the high efficiency. To study how wetting layer would affect IB performance two sets of simulations have been carried out. One part is done with COSMOL. In this part different number of QDs layers have been simulated with and without wetting layer. The result showed that parasitic effect of wetting layer could not be eliminated large stacks of QD are stacked together, to achieve the promised efficient wetting layer should be eliminated from the system. In MATLAB part QDs have been approximated with simple cuboid. The main aim in this part was to compare how the result of taking into the account the real shape differs from a simple approach which has been the most reported the most in literature.
If all the restrains on achieving high efficiency of IBSC are met, still one major draw- back remains and, that is high cost of MBE process. This would hinder mass production of IB cell. One possible potential method to gradually replace MBE can be Colloidal QDs.
Colloidal QDs are fairly low cost and easy to fabricate. In this work, colloidal crystal growth was examined. The best condition for monolayer deposition was obtained and, the feasibility of crystal growth was demonstrated. additionally, There was an attempt to grow more than one layer and investigate result of embedding QDs in a barrier of another material.
Subjects/Keywords: Solar cell; Quantum Dot
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Dashmiz, S. (2013). Quantum Dots for Intermediate Band in Solar Cells. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/7316
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Dashmiz, Shadi. “Quantum Dots for Intermediate Band in Solar Cells.” 2013. Thesis, University of Waterloo. Accessed April 18, 2021.
http://hdl.handle.net/10012/7316.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Dashmiz, Shadi. “Quantum Dots for Intermediate Band in Solar Cells.” 2013. Web. 18 Apr 2021.
Vancouver:
Dashmiz S. Quantum Dots for Intermediate Band in Solar Cells. [Internet] [Thesis]. University of Waterloo; 2013. [cited 2021 Apr 18].
Available from: http://hdl.handle.net/10012/7316.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Dashmiz S. Quantum Dots for Intermediate Band in Solar Cells. [Thesis]. University of Waterloo; 2013. Available from: http://hdl.handle.net/10012/7316
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Addis Ababa University
8.
Adem, Beriso.
STUDY OF EMISSION OF LIGHT FROM NANOPOROUS SILICON QUANTUM DOT
.
Degree: 2012, Addis Ababa University
URL: http://etd.aau.edu.et/dspace/handle/123456789/1198
► Both nanocrystalline and nanoporous silicon shows interesting optical and light emission properties. As the system size goes to nanoscale the optical band gap, radiative transitions,…
(more)
▼ Both nanocrystalline and nanoporous silicon shows interesting optical and light emission
properties. As the system size goes to nanoscale the optical band gap, radiative transitions,
oscillator strength, absorption coefficient and dielectric function increases. The nanosilicon
shows unusual optical properties which have tremendous importance for nanophotonics and
optoelectronic applications. The purpose of the thesis is to study the light emission and optical
behavior of nanoporous silicon cluster (quantum
dot) with varying porosity and oxygen as well
as hydrogen at the surface. We examine these properties combining k.p perturbation method and
surface state model. In order to clarify the morphological effects such as size, surface passivation
and porosity level of a nanoporous silicon cluster on its optical properties, calculation of optical
absorption coefficient, dielectric function and oscillator strength of porous silicon nanoclusters as
a function of size (diameter) through energy gap is discussed using k.p method. The effects of
nanoparticles size along with surface passivation and porosity level on optical band gap have
also been investigated and compared with experiment. The porosity and surface effects are
incorporated through some empirical parameters c and α in our model. Furthermore, we examine
the main factors that causes photoluminescence peak to shift towards left or to the smaller
wavelength of visible spectrum (blue shifted). Our results are in conformity with some other
experimental and theoretical findings. We also present some of the important applications of
silicon nanostructures and provide a control mechanism for light emission through our
investigation.
Advisors/Committee Members: Dr. S. K. Ghoshal (advisor).
Subjects/Keywords: NANOPOROUS;
SILICON;
QUANTUM;
DOT
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Adem, B. (2012). STUDY OF EMISSION OF LIGHT FROM NANOPOROUS SILICON QUANTUM DOT
. (Thesis). Addis Ababa University. Retrieved from http://etd.aau.edu.et/dspace/handle/123456789/1198
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Adem, Beriso. “STUDY OF EMISSION OF LIGHT FROM NANOPOROUS SILICON QUANTUM DOT
.” 2012. Thesis, Addis Ababa University. Accessed April 18, 2021.
http://etd.aau.edu.et/dspace/handle/123456789/1198.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Adem, Beriso. “STUDY OF EMISSION OF LIGHT FROM NANOPOROUS SILICON QUANTUM DOT
.” 2012. Web. 18 Apr 2021.
Vancouver:
Adem B. STUDY OF EMISSION OF LIGHT FROM NANOPOROUS SILICON QUANTUM DOT
. [Internet] [Thesis]. Addis Ababa University; 2012. [cited 2021 Apr 18].
Available from: http://etd.aau.edu.et/dspace/handle/123456789/1198.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Adem B. STUDY OF EMISSION OF LIGHT FROM NANOPOROUS SILICON QUANTUM DOT
. [Thesis]. Addis Ababa University; 2012. Available from: http://etd.aau.edu.et/dspace/handle/123456789/1198
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Toronto
9.
Chong, Lori.
Towards the Development of a Quantum Dot based Bioprobe for Intracellular Investigations of Nucleic Acid Hybridization Events using Fluorescence Resonance Energy Transfer.
Degree: 2011, University of Toronto
URL: http://hdl.handle.net/1807/30550
► The unique spectroscopic properties of quantum dots (QDs) are of interest for application in intracellular studies of gene expression. QDs derivatized with single-stranded probe oligonucleotides…
(more)
▼ The unique spectroscopic properties of quantum dots (QDs) are of interest for application in intracellular studies of gene expression. QDs derivatized with single-stranded probe oligonucleotides were used to detect complementary target sequences via hybridization and fluorescence resonance energy transfer (FRET). As nucleic acid targets are not labeled within cells, a displacement assay for nucleic acid detection featuring QDs as FRET donors was developed. QDs conjugated with oligonucleotide probes and then pre-hybridized with labeled target yielded efficient FRET in vitro. Studies in vitro confirmed that displacement kinetics of pre-hybridized target was a function of the stability of the initial hybridized complex. Displacement was observed as reduction in FRET intensity coupled with regeneration of QD fluorescence. By engineering the sequence of the labeled target, faster displacement was possible. The QDprobe+target system was successfully delivered into cells via transfection. Although QDs with their cargo remained sequestered in endosomal vesicles, fluorescent properties were retained.
MAST
Advisors/Committee Members: Krull, Ulrich Jorg, Chemistry.
Subjects/Keywords: quantum dot; FRET; hybridization; 0486
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Chong, L. (2011). Towards the Development of a Quantum Dot based Bioprobe for Intracellular Investigations of Nucleic Acid Hybridization Events using Fluorescence Resonance Energy Transfer. (Masters Thesis). University of Toronto. Retrieved from http://hdl.handle.net/1807/30550
Chicago Manual of Style (16th Edition):
Chong, Lori. “Towards the Development of a Quantum Dot based Bioprobe for Intracellular Investigations of Nucleic Acid Hybridization Events using Fluorescence Resonance Energy Transfer.” 2011. Masters Thesis, University of Toronto. Accessed April 18, 2021.
http://hdl.handle.net/1807/30550.
MLA Handbook (7th Edition):
Chong, Lori. “Towards the Development of a Quantum Dot based Bioprobe for Intracellular Investigations of Nucleic Acid Hybridization Events using Fluorescence Resonance Energy Transfer.” 2011. Web. 18 Apr 2021.
Vancouver:
Chong L. Towards the Development of a Quantum Dot based Bioprobe for Intracellular Investigations of Nucleic Acid Hybridization Events using Fluorescence Resonance Energy Transfer. [Internet] [Masters thesis]. University of Toronto; 2011. [cited 2021 Apr 18].
Available from: http://hdl.handle.net/1807/30550.
Council of Science Editors:
Chong L. Towards the Development of a Quantum Dot based Bioprobe for Intracellular Investigations of Nucleic Acid Hybridization Events using Fluorescence Resonance Energy Transfer. [Masters Thesis]. University of Toronto; 2011. Available from: http://hdl.handle.net/1807/30550

Oregon State University
10.
Arnold, Nicholas D.
Automation and Evaluation of Graduated Dot Maps.
Degree: MS, Geography, 2015, Oregon State University
URL: http://hdl.handle.net/1957/56331
► Dot mapping is a traditional method for visualizing quantitative data, but current automated dot mapping techniques are limited. The most common automated method places dots…
(more)
▼ Dot mapping is a traditional method for visualizing quantitative data, but current automated
dot mapping techniques are limited. The most common automated method places dots
pseudo-randomly within enumeration areas, which can result in overlapping dots and very
dense
dot clusters for areas with large values. These issues affect users’ ability to estimate
values. Graduated
dot maps use dots with different sizes that represent different values.
With graduated
dot maps the number of dots on a map is smaller and the likelihood of
overlapping dots is smaller. This research introduces an automated method of generating
graduated
dot maps that arranges dots with blue noise patterns to avoid overlapping dots
and uses clustering algorithms to replace densely-packed dots with dots of larger sizes. A
user study comparing graduated
dot maps, pseudo-random
dot maps, blue noise
dot maps,
and area-proportional circle maps with almost 300 participants was conducted. Results
indicate that map-users can interpret graduated
dot maps more accurately than the other
map types. In addition, map users appear to prefer graduated
dot maps to the other map
types. These findings suggest that graduated
dot maps are more effective and more appealing
than conventional
dot maps.
Advisors/Committee Members: Jenny, Bernhard J. (advisor), Kimerling, A. Jon (committee member).
Subjects/Keywords: graduated dot map; Cartography
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Arnold, N. D. (2015). Automation and Evaluation of Graduated Dot Maps. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/56331
Chicago Manual of Style (16th Edition):
Arnold, Nicholas D. “Automation and Evaluation of Graduated Dot Maps.” 2015. Masters Thesis, Oregon State University. Accessed April 18, 2021.
http://hdl.handle.net/1957/56331.
MLA Handbook (7th Edition):
Arnold, Nicholas D. “Automation and Evaluation of Graduated Dot Maps.” 2015. Web. 18 Apr 2021.
Vancouver:
Arnold ND. Automation and Evaluation of Graduated Dot Maps. [Internet] [Masters thesis]. Oregon State University; 2015. [cited 2021 Apr 18].
Available from: http://hdl.handle.net/1957/56331.
Council of Science Editors:
Arnold ND. Automation and Evaluation of Graduated Dot Maps. [Masters Thesis]. Oregon State University; 2015. Available from: http://hdl.handle.net/1957/56331

University of Cambridge
11.
Dewhurst, Samuel James.
Optoelectronic and photonic control of single quantum dots.
Degree: PhD, 2010, University of Cambridge
URL: http://www.dspace.cam.ac.uk/handle/1810/226860https://www.repository.cam.ac.uk/bitstream/1810/226860/2/license.txt
;
https://www.repository.cam.ac.uk/bitstream/1810/226860/5/thesis.pdf.txt
;
https://www.repository.cam.ac.uk/bitstream/1810/226860/3/thesis.pdf.txt
;
https://www.repository.cam.ac.uk/bitstream/1810/226860/6/thesis.pdf.jpg
► The area of quantum information promises to deliver a range of new technologies in the fields of quantum computing and quantum communication. Devices based on…
(more)
▼ The area of quantum information promises to deliver a range of new technologies in the fields of quantum computing and quantum communication. Devices based on semiconductor quantum dots hold great potential for the practical realisation of many of the components required in the proposed schemes.
This thesis describes the development of several quantum dot devices. By integrating a quantum dot into a p-i-n diode, it was possible to control the dominant emission lines in its photoluminescence spectrum and to maximise the degree of polarisation correlation between the two photons emitted in the biexciton decay. With the same device under a magnetic field, a digital memory was demonstrated. The polarisation information of a single photon was stored as the spin of an electron inside the quantum dot, and was deterministically recovered some time later by the application of an electrical trigger.
A fabrication process was developed in order to produce high quality two dimensional slab photonic crystals operating with a photonic band gap at ~ 900 nm. By placing a quantum dot into an appropriately designed H1 photonic crystal cavity, strong coupling was achieved between the dot and the monopole mode of the cavity. The vacuum Rabi splitting was found to be constant for all linear polarisations due to the unpolarised nature of the far-field of the mode.
Finally, a new kind of cavity based on photonic crystal waveguides was developed. A Purcell enhancement of the in-plane spontaneous emission from a quantum dot coupled to a unidirectional photonic crystal waveguide was demonstrated.
Subjects/Keywords: Quantum dot; Photonic crystal
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Dewhurst, S. J. (2010). Optoelectronic and photonic control of single quantum dots. (Doctoral Dissertation). University of Cambridge. Retrieved from http://www.dspace.cam.ac.uk/handle/1810/226860https://www.repository.cam.ac.uk/bitstream/1810/226860/2/license.txt ; https://www.repository.cam.ac.uk/bitstream/1810/226860/5/thesis.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/226860/3/thesis.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/226860/6/thesis.pdf.jpg
Chicago Manual of Style (16th Edition):
Dewhurst, Samuel James. “Optoelectronic and photonic control of single quantum dots.” 2010. Doctoral Dissertation, University of Cambridge. Accessed April 18, 2021.
http://www.dspace.cam.ac.uk/handle/1810/226860https://www.repository.cam.ac.uk/bitstream/1810/226860/2/license.txt ; https://www.repository.cam.ac.uk/bitstream/1810/226860/5/thesis.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/226860/3/thesis.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/226860/6/thesis.pdf.jpg.
MLA Handbook (7th Edition):
Dewhurst, Samuel James. “Optoelectronic and photonic control of single quantum dots.” 2010. Web. 18 Apr 2021.
Vancouver:
Dewhurst SJ. Optoelectronic and photonic control of single quantum dots. [Internet] [Doctoral dissertation]. University of Cambridge; 2010. [cited 2021 Apr 18].
Available from: http://www.dspace.cam.ac.uk/handle/1810/226860https://www.repository.cam.ac.uk/bitstream/1810/226860/2/license.txt ; https://www.repository.cam.ac.uk/bitstream/1810/226860/5/thesis.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/226860/3/thesis.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/226860/6/thesis.pdf.jpg.
Council of Science Editors:
Dewhurst SJ. Optoelectronic and photonic control of single quantum dots. [Doctoral Dissertation]. University of Cambridge; 2010. Available from: http://www.dspace.cam.ac.uk/handle/1810/226860https://www.repository.cam.ac.uk/bitstream/1810/226860/2/license.txt ; https://www.repository.cam.ac.uk/bitstream/1810/226860/5/thesis.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/226860/3/thesis.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/226860/6/thesis.pdf.jpg

University of Illinois – Chicago
12.
Samareh Afsari, Hamid.
QD FRET for Cellular Imaging and Sensing.
Degree: 2017, University of Illinois – Chicago
URL: http://hdl.handle.net/10027/22224
► Fluorescence microscopy is an essential tool to study biological molecules in living cells or tissues. Forster resonance energy transfer (FRET) microscopy is commonly used to…
(more)
▼ Fluorescence microscopy is an essential tool to study biological molecules in living cells or tissues. Forster resonance energy transfer (FRET) microscopy is commonly used to monitor the relative distance between two fluorescently labeled proteins or other biomolecules and can be leveraged to report on binding dynamics or conformational changes. FRET microscopy needs bright probes with good resistance to photobleaching and narrow emission spectra. Imaging probes may be based on fluorescence proteins (FPs), organic fluorophores, nanoparticles (Quantum Dots or QDs) or lanthanide complexes. There is a huge interest in applications of QDs in live cell microscopy due to their exceptional brightness and photo-stability. Using QDs as FRET donors, offers several practical advantages over conventional fluorophores (FPs or dyes). For example, broad absorption spectra allow for the excitation of QD far from the acceptor’s absorption region, which minimizes the direct excitation of the acceptor. QDs can also be FRET acceptors when paired with lanthanides as donors for use in time-gated microscopy. Time-Gated FRET microscopy is based on the difference in excited state lifetimes between lanthanides (0.1 – 2 ms) and QDs (<100 ns) with the correct spectral overlap. Time-gated FRET microscopy provides a better signal-to-noise ratio by using pulsed excitation and delayed detection to isolate ms-scale lanthanide and lanthanide-sensitized FRET signals from ns-scale cell autofluorescence and directly excited acceptor fluorescence. Successful use of QDs as microscopic imaging sensors poses several challenges including appropriate surface functionalization, delivery into living cells, and targeting to select biomolecules.
This dissertation reports the results of efforts to engineer QDs for a variety of live-cell imaging and sensing applications, including ratiometric metabolite sensing, lanthanide-based FRET, and selective labeling of a protein inside a cell. Chapter one is comprised of relevant background information on QDs, lanthanides, FRET, and other materials and techniques explored herein. In chapter two, the design and characterization of QD-based ratiometric sensors is described. These sensors were developed to monitor oxygen, hydrogen sulfide, and endosomal escape in live cells. Chapter three explores terbium-to-quantum
dot FRET microscopy. We developed several time-gated Tb-to-QD FRET systems that can be used for intracellular imaging with very efficient suppression of non-specific fluorescence background. With the removal of the acceptor fluorescence due to direct excitation, there is no need for control images such as donor only or acceptor only (as required for conventional FRET imaging experiments). For the demonstration of intracellular Tb-to-QD FRET and Tb-to-QD-to-dye FRET relays, we used Tb-QD-dye nanoassemblies (Tb-pep and dye-peptides self-assembled via His6 to the QD surfaces) that were microinjected into live HeLa cells. In chapter 4, we show that His6 self-assembly, combined with amide coupling, increases the…
Advisors/Committee Members: Miller, Lawrence W. (advisor), Snee, Preston T. (committee member), Min, Jung-Hyun (committee member), Mohr, Justin T. (committee member), Liu, Ying (committee member), Miller, Lawrence W. (chair).
Subjects/Keywords: FRET; Quantum Dot; Microscopy
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Samareh Afsari, H. (2017). QD FRET for Cellular Imaging and Sensing. (Thesis). University of Illinois – Chicago. Retrieved from http://hdl.handle.net/10027/22224
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Samareh Afsari, Hamid. “QD FRET for Cellular Imaging and Sensing.” 2017. Thesis, University of Illinois – Chicago. Accessed April 18, 2021.
http://hdl.handle.net/10027/22224.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Samareh Afsari, Hamid. “QD FRET for Cellular Imaging and Sensing.” 2017. Web. 18 Apr 2021.
Vancouver:
Samareh Afsari H. QD FRET for Cellular Imaging and Sensing. [Internet] [Thesis]. University of Illinois – Chicago; 2017. [cited 2021 Apr 18].
Available from: http://hdl.handle.net/10027/22224.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Samareh Afsari H. QD FRET for Cellular Imaging and Sensing. [Thesis]. University of Illinois – Chicago; 2017. Available from: http://hdl.handle.net/10027/22224
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

KTH
13.
Shamsa, Arya.
Computerized data analysis of numerous spectra fromindividual quantum dots : Identifying Quantum-dot signals by Image-processing.
Degree: MF, 2012, KTH
URL: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-119289
► In this work an image processing software was developed to extract single nanocrystals luminescence spectra from spectral images containing various noises and parasitic signals.…
(more)
▼ In this work an image processing software was developed to extract single nanocrystals luminescence spectra from spectral images containing various noises and parasitic signals. This software helps users to process and analyze experimental data in a simplified and intuitive way and allows quick analysis of large volumes of data. The output results are the distributions of peak emission energy and inter-peak spacing. The software also generates text-files containing the extracted information for further analysis. Also experimental photoluminescence measurements have been performed at liquid nitrogen temperature of 77K, on phosphorous doped silicon nanocrystals. The data were analyzed with the developed software and with other data confirm previous results indicating the accuracy of the methodology used in the code. The implementation of this software for data analysis can process information without human bias and hopefully find hidden patterns that previously been lost when analyzing data manually.
Subjects/Keywords: quantum dot; image processing
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Shamsa, A. (2012). Computerized data analysis of numerous spectra fromindividual quantum dots : Identifying Quantum-dot signals by Image-processing. (Thesis). KTH. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-119289
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Shamsa, Arya. “Computerized data analysis of numerous spectra fromindividual quantum dots : Identifying Quantum-dot signals by Image-processing.” 2012. Thesis, KTH. Accessed April 18, 2021.
http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-119289.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Shamsa, Arya. “Computerized data analysis of numerous spectra fromindividual quantum dots : Identifying Quantum-dot signals by Image-processing.” 2012. Web. 18 Apr 2021.
Vancouver:
Shamsa A. Computerized data analysis of numerous spectra fromindividual quantum dots : Identifying Quantum-dot signals by Image-processing. [Internet] [Thesis]. KTH; 2012. [cited 2021 Apr 18].
Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-119289.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Shamsa A. Computerized data analysis of numerous spectra fromindividual quantum dots : Identifying Quantum-dot signals by Image-processing. [Thesis]. KTH; 2012. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-119289
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Victoria
14.
Cao, Jieming.
Synthesis and characterization of lead-based core-shell-shell quantum dots and studies on excitation-dependent quantum yield measurement.
Degree: Department of Chemistry, 2015, University of Victoria
URL: http://hdl.handle.net/1828/6417
► Nano-sized semiconductors, known as quantum dots (QDs), are one of the hottest research areas in recent years. The energy gaps of QDs change with their…
(more)
▼ Nano-sized semiconductors, known as quantum dots (QDs), are one of the hottest research areas in recent years. The energy gaps of QDs change with their diameters, giving them size-dependent optical properties. By controlling reaction conditions, people are able to make QDs that can emit in certain wavelength ranges. So far, QDs have shown great potential in telecommunication, bio-imaging, single-photon laser source, etc.
This thesis starts with Chapter 1, which first introduces the finding of QDs and why they have such special properties. The quantum confinement and energy gap are discussed, followed by the absorption and emission of QDs. Moreover, the synthesis methods and mechanism involved are reviewed in brief.
Chapter 2 presents the synthesis of lead-based core, core-shell and core-shell-shell QDs and previous work by other people. A few techniques including transmission electron microscopy (TEM), UV-absorption, photoluminescence (PL) measurement, and X-ray photoelectron spectroscopy (XPS) were used and shown in this chapter. Core-shell and core-shell-shell QDs are shown to present excellent stability over 20 months. The ZnS shell was proved by energy-dependent XPS and TEM measurements.
A detailed discussion on quantum yield (QY) is given in Chapter 3. Absolute and relative QY measurements and some standard dyes are discussed. After that, Chapter 4 shows systematic QY measurements on lead-based core and core-shell QDs. For each type of QDs, at least two batches are selected with their emission spectra presented as well. It is revealed by collected data that they have excitation-dependent QYs. The QY drops as the excitation light increases in energy (higher wavelength), which is due to non-radiative decays from higher excited states or the Auger effects. QY of PbS and PbSe QDs can be as high as 50%.
Eventually, the conclusion and future work are included in Chapter 5. All experimental work is described in detail in the experimental section.
Advisors/Committee Members: van Veggel, Frank C.J.M. (supervisor).
Subjects/Keywords: Quantum dot; Quantum yield
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Cao, J. (2015). Synthesis and characterization of lead-based core-shell-shell quantum dots and studies on excitation-dependent quantum yield measurement. (Masters Thesis). University of Victoria. Retrieved from http://hdl.handle.net/1828/6417
Chicago Manual of Style (16th Edition):
Cao, Jieming. “Synthesis and characterization of lead-based core-shell-shell quantum dots and studies on excitation-dependent quantum yield measurement.” 2015. Masters Thesis, University of Victoria. Accessed April 18, 2021.
http://hdl.handle.net/1828/6417.
MLA Handbook (7th Edition):
Cao, Jieming. “Synthesis and characterization of lead-based core-shell-shell quantum dots and studies on excitation-dependent quantum yield measurement.” 2015. Web. 18 Apr 2021.
Vancouver:
Cao J. Synthesis and characterization of lead-based core-shell-shell quantum dots and studies on excitation-dependent quantum yield measurement. [Internet] [Masters thesis]. University of Victoria; 2015. [cited 2021 Apr 18].
Available from: http://hdl.handle.net/1828/6417.
Council of Science Editors:
Cao J. Synthesis and characterization of lead-based core-shell-shell quantum dots and studies on excitation-dependent quantum yield measurement. [Masters Thesis]. University of Victoria; 2015. Available from: http://hdl.handle.net/1828/6417

Georgia Tech
15.
Lane, Lucas A.
Advancement of blinking suppressed quantum dots for enhanced single molecule imaging.
Degree: PhD, Biomedical Engineering (Joint GT/Emory Department), 2014, Georgia Tech
URL: http://hdl.handle.net/1853/54023
► This work reports the development and spectroscopic studies of blinking-suppressed compact quantum dots. It is shown that a linearly graded alloy shell can be grown…
(more)
▼ This work reports the development and spectroscopic studies of blinking-suppressed compact quantum dots. It is shown that a linearly graded alloy shell can be grown on a small CdSe core via a precisely controlled layer-by-layer process, and that this graded shell leads to a dramatic suppression of QD blinking both in organic solvents and in water. A substantial portion (over 25%) of the resulting QDs essentially does not blink (more than 99% of the time in the bright or “on” state). Theoretical modeling studies indicate that this type of linearly graded and relatively thin shells can not only minimize charge carrier access to surface traps, but also reduce accumulated lattice strains and defects at the core/shell interface, both of which are believed to be responsible for carrier trapping and QD blinking. Further, the biological utility of blinking-suppressed QDs by using both polyethylene glycol (PEG)-based and multidentate capping ligands is evaluated, and the results show that their optical properties are maintained regardless of surface coatings or solvating media, and that the blinking-suppressed QDs can provide continuous trajectories in live cell receptor tracking studies.
Advisors/Committee Members: Nie, Shuming (advisor), Xia, Younan (committee member), El-Sayed, Mostafa (committee member), Marcus, Adam (committee member), Bao, Gang (committee member).
Subjects/Keywords: Quantum dot; Single molecule imaging
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Lane, L. A. (2014). Advancement of blinking suppressed quantum dots for enhanced single molecule imaging. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/54023
Chicago Manual of Style (16th Edition):
Lane, Lucas A. “Advancement of blinking suppressed quantum dots for enhanced single molecule imaging.” 2014. Doctoral Dissertation, Georgia Tech. Accessed April 18, 2021.
http://hdl.handle.net/1853/54023.
MLA Handbook (7th Edition):
Lane, Lucas A. “Advancement of blinking suppressed quantum dots for enhanced single molecule imaging.” 2014. Web. 18 Apr 2021.
Vancouver:
Lane LA. Advancement of blinking suppressed quantum dots for enhanced single molecule imaging. [Internet] [Doctoral dissertation]. Georgia Tech; 2014. [cited 2021 Apr 18].
Available from: http://hdl.handle.net/1853/54023.
Council of Science Editors:
Lane LA. Advancement of blinking suppressed quantum dots for enhanced single molecule imaging. [Doctoral Dissertation]. Georgia Tech; 2014. Available from: http://hdl.handle.net/1853/54023

Universitat de Valencia
16.
Agudelo Morales, Carlos Eduardo.
Diseño de un sistema híbrido nanoparticula semiconductora-pireno y su aplicación como sensor
.
Degree: 2016, Universitat de Valencia
URL: http://hdl.handle.net/10550/56159
► Esta investigación se centró en el desarrollo de un sistema híbrido organico-inorganico, con múltiples señales emisivas a distintas longitudes de onda, y su evaluación como…
(more)
▼ Esta investigación se centró en el desarrollo de un sistema híbrido organico-inorganico, con múltiples señales emisivas a distintas longitudes de onda, y su evaluación como herramienta analítica selectiva y de cuantificación de nitrocompuestos aromáticos.
El sistema híbrido consistió por una parte, en nanopartículas semiconductoras específicamente se utilizó nanocristales de tipo CdSe (core) y CdSe/ZnS (core shell). Estos nanohíbridos se eligieron por su potencial aplicación como sensores.
El componente orgánico consistió en ligandos funcionales que presentan un fluoróforo específicamente de pireno (Py). Este fluoróforo fue elegido, por su buena fotoestabilidad y la sensibilidad de sus propiedades luminiscentes al entorno. El pireno tiene una emisión bien resuelta en la zona de 340-420 nm que corresponde al monómero. A concentraciones del orden mili-molar se observa la formación del excímero, cuyo máximo de emisión se encuentra a 470 nm.
Con el propósito de garantizar una buena estabilidad y pasivación de las nanopartículas se utilizó un ligando con un grupo anclante de tipo tiol espeficicamente [11-mercaptoundecanoato de 4-(pirenil-1-il) butilo], el grupo tiol es muy afín a la superficie de los QD. El otro extremo de la cadena alquílica del ligando presenta la unidad de pireno.
En el capítulo 3.1 de esta tesis, se presenta la funcionalización de la superficie de las nanopartículas del tipo core (CdSe) con pireno como ligando (
[email protected]). Se demuestra que la elevada área superficial relativa (superficie/volumen) de la nanopartícula permite alojar eficazmente una gran cantidad de estos ligandos, y por lo tanto una alta concentración local del pireno.
Los análisis por espectroscopia de absorción y resonancia magnética nuclear evidenciaron que el pireno se encontraba unido a la superficie de la nanopartícula, presentando las bandas de absorción correspondientes del pireno sobre 300-380 nm. Las imágenes de microscopia electrónica de transmisión de alta resolución corroboraron los tamaños y la homogeneidad de la muestra (nanopartículas de 2,4±0,4 nm).
La funcionalización de este tipo de nanopartículas, con el tiol, produjo una fuerte desactivación de la emisión de la fluorescencia de la nanopartícula. Las medidas de la fluorescencia en estado estacionario y resueltas en el tiempo, demostraron formación de las dos especies emisivas del pireno (monómero y el excímero), que confirma una alta concentración local de pireno en la periferia de la nanopartícula. El tiempo de vida de fluorescencia para el monómero mostró una cinética de decaimiento radiativo biexponencial con tiempos de vida de 10 ns (62%) y 108 ns (38%), mientras que para la señal del excímero mostró una sola componente de 57 ns (100%).
La capacidad del
[email protected] como sensor fué analizada utilizando una variedad de compuestos nitroaromáticos como analitos: nitroanilinas [3-nitroanilina (3-NA) y 4-nitroanilina (4-NA)] y nitrobencenos [nitrobenceno (NB), 4-nitrotolueno (4-NT), 2,4-dinitrotolueno (2,4-DNT), 2,6-dinitrotolueno (2,6-DNT)].
Las intensidades…
Advisors/Committee Members: Pérez Prieto, Julia (advisor).
Subjects/Keywords: fotoquímica;
nanopartículas;
quantum dot
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APA (6th Edition):
Agudelo Morales, C. E. (2016). Diseño de un sistema híbrido nanoparticula semiconductora-pireno y su aplicación como sensor
. (Doctoral Dissertation). Universitat de Valencia. Retrieved from http://hdl.handle.net/10550/56159
Chicago Manual of Style (16th Edition):
Agudelo Morales, Carlos Eduardo. “Diseño de un sistema híbrido nanoparticula semiconductora-pireno y su aplicación como sensor
.” 2016. Doctoral Dissertation, Universitat de Valencia. Accessed April 18, 2021.
http://hdl.handle.net/10550/56159.
MLA Handbook (7th Edition):
Agudelo Morales, Carlos Eduardo. “Diseño de un sistema híbrido nanoparticula semiconductora-pireno y su aplicación como sensor
.” 2016. Web. 18 Apr 2021.
Vancouver:
Agudelo Morales CE. Diseño de un sistema híbrido nanoparticula semiconductora-pireno y su aplicación como sensor
. [Internet] [Doctoral dissertation]. Universitat de Valencia; 2016. [cited 2021 Apr 18].
Available from: http://hdl.handle.net/10550/56159.
Council of Science Editors:
Agudelo Morales CE. Diseño de un sistema híbrido nanoparticula semiconductora-pireno y su aplicación como sensor
. [Doctoral Dissertation]. Universitat de Valencia; 2016. Available from: http://hdl.handle.net/10550/56159
17.
Kar, Saurav.
Effect of Out-Tunneling Leakage and Electron-Hole Asymmetry on Modulation Response of Semiconductor Double Tunneling-Injection Quantum Dot Lasers.
Degree: MS, Materials Science, 2017, Virginia Tech
URL: http://hdl.handle.net/10919/78816
► In this age of internet and optical communications, semiconductor lasers have a profound impact on the way we interact with our world. They act as…
(more)
▼ In this age of internet and optical communications, semiconductor lasers have a profound impact on the way we interact with our world. They act as intermediaries converting digital signals into optical pulses (in order to be transmitted) and then back into digital code. Understandably, the maximum speed at which these lasers can encode and decode information limits the speed of this entire communication network. This speed can be defined as the modulation bandwidth.
A new design, the double tunneling-injection (DTI) quantum
dot (QD) laser shows considerable promise, however its modulation bandwidth under real world operating conditions was yet to be analyzed. The aim of this thesis was to then theoretically analyze the real world modulation bandwidth of this new semiconductor laser design. This was done by analyzing the effect of unwanted leakage of carriers (out-tunneling) from the active region (Quantum Dots), and by analyzing the effect of electron-hole asymmetry on the device characteristics.
The relative decrease in modulation bandwidth, due to leakage of carriers, in a DTI QD laser is then shown to be nearly negligible. Consequently, it is shown that the DTI QD laser is a robust device in terms of sensitivity to out-tunneling leakage, i.e., much effort need not be paid in suppressing this phenomenon.
On analyzing the effect of electron-hole asymmetry on the device characteristics of a DTI QD laser, it is shown that there is no reduction in the maximum modulation bandwidth, i.e., electron-hole asymmetry does not indicate a reduction in the effectiveness of such a design.
Thus, this analysis reiterates the fact that DTI QD lasers indeed show incredible potential to drastically improve modulation bandwidth and must be investigated further.
Advisors/Committee Members: Asryan, Levon V. (committeechair), Guido, Louis J. (committee member), Orlowski, Mariusz K. (committee member).
Subjects/Keywords: semiconductor lasers; quantum dot lasers
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MLA ·
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APA (6th Edition):
Kar, S. (2017). Effect of Out-Tunneling Leakage and Electron-Hole Asymmetry on Modulation Response of Semiconductor Double Tunneling-Injection Quantum Dot Lasers. (Masters Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/78816
Chicago Manual of Style (16th Edition):
Kar, Saurav. “Effect of Out-Tunneling Leakage and Electron-Hole Asymmetry on Modulation Response of Semiconductor Double Tunneling-Injection Quantum Dot Lasers.” 2017. Masters Thesis, Virginia Tech. Accessed April 18, 2021.
http://hdl.handle.net/10919/78816.
MLA Handbook (7th Edition):
Kar, Saurav. “Effect of Out-Tunneling Leakage and Electron-Hole Asymmetry on Modulation Response of Semiconductor Double Tunneling-Injection Quantum Dot Lasers.” 2017. Web. 18 Apr 2021.
Vancouver:
Kar S. Effect of Out-Tunneling Leakage and Electron-Hole Asymmetry on Modulation Response of Semiconductor Double Tunneling-Injection Quantum Dot Lasers. [Internet] [Masters thesis]. Virginia Tech; 2017. [cited 2021 Apr 18].
Available from: http://hdl.handle.net/10919/78816.
Council of Science Editors:
Kar S. Effect of Out-Tunneling Leakage and Electron-Hole Asymmetry on Modulation Response of Semiconductor Double Tunneling-Injection Quantum Dot Lasers. [Masters Thesis]. Virginia Tech; 2017. Available from: http://hdl.handle.net/10919/78816

Virginia Tech
18.
Wu, Yuchang.
Theory of Modulation Response of Semiconductor Quantum Dot Lasers.
Degree: PhD, Materials Science and Engineering, 2013, Virginia Tech
URL: http://hdl.handle.net/10919/23129
► In this dissertation, a theory of modulation response of a semiconductor quantum dot (QD) laser is developed. The effect of the following factors on the…
(more)
▼ In this dissertation, a theory of modulation response of a semiconductor quantum
dot (QD) laser is developed. The effect of the following factors on the modulation bandwidth of a QD laser is studied and the following results are obtained: 1) Carrier capture delay from the optical confinement layer into QDs Closed-form analytical expressions are obtained for the modulation bandwidth omega
-3 dB of a QD laser in the limiting cases of fast and slow capture into QDs. omega
-3 dB is highest in the case of instantaneous capture into QDs, when the cross-section of carrier capture into a QD sigma
n = infinity. With reducing sigma
n, omega
-3 dB decreases and becomes zero at a certain non-vanishing sigma
nmin. This sigma
nmin presents the minimum tolerable capture cross-section for the lasing to occur at a given dc component j
0 of the injection current density. The higher is j
0, the smaller is sigma
nmin and hence the direct modulation of the output power is possible at a slower capture. The use of multiple layers with QDs is shown to considerably improve the modulation response of the laser – the same omega
-3 dB is obtained in a multi-layer structure at a much lower j
0 than in a single-layer structure. 2) Internal optical loss in the optical confinement layer The internal optical loss, which increases with free-carrier density in the waveguide region, considerably reduces the modulation bandwidth omega
-3 dB of a QD laser. With internal loss cross-section sigma
int increasing and approaching its maximum tolerable value, the modulation bandwidth decreases and becomes zero. There exists the optimum cavity length, at which omega
-3 dB is highest; the larger is sigma
int, the longer is the optimum cavity. 3) Excited states in QDs Direct and indirect (excited-state-mediated) mechanisms of capture of carriers from the waveguide region into the lasing ground state in QDs are considered, and the modulation response of a laser is calculated. It is shown that, when only indirect capture is involved, the excited-to-ground-state relaxation delay strongly limits the ground-state modulation bandwidth of the laser – at the longest tolerable relaxation time, the bandwidth becomes zero. When direct capture is also involved, the effect of excited-to-ground-state relaxation is less significant and the modulation bandwidth is considerably higher.
Advisors/Committee Members: Asryan, Levon Volodya (committeechair), Pickrell, Gary R. (committee member), Orlowski, Mariusz Kriysztof (committee member), Guido, Louis J. (committee member).
Subjects/Keywords: quantum dot lasers; semiconductor lasers
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Wu, Y. (2013). Theory of Modulation Response of Semiconductor Quantum Dot Lasers. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/23129
Chicago Manual of Style (16th Edition):
Wu, Yuchang. “Theory of Modulation Response of Semiconductor Quantum Dot Lasers.” 2013. Doctoral Dissertation, Virginia Tech. Accessed April 18, 2021.
http://hdl.handle.net/10919/23129.
MLA Handbook (7th Edition):
Wu, Yuchang. “Theory of Modulation Response of Semiconductor Quantum Dot Lasers.” 2013. Web. 18 Apr 2021.
Vancouver:
Wu Y. Theory of Modulation Response of Semiconductor Quantum Dot Lasers. [Internet] [Doctoral dissertation]. Virginia Tech; 2013. [cited 2021 Apr 18].
Available from: http://hdl.handle.net/10919/23129.
Council of Science Editors:
Wu Y. Theory of Modulation Response of Semiconductor Quantum Dot Lasers. [Doctoral Dissertation]. Virginia Tech; 2013. Available from: http://hdl.handle.net/10919/23129

University of Manchester
19.
Radtke, Hanna.
Surface Properties of Quantum Dots for Next Generation
Solar Cells.
Degree: 2016, University of Manchester
URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:306345
► Colloidal quantum dots (QDs) are promising candidates for the next generation of solar cells due to their tunable band gaps, solution processability and the potential…
(more)
▼ Colloidal quantum dots (QDs) are promising
candidates for the next generation of solar cells due to their
tunable band gaps, solution processability and the potential for
multiple exciton generation. However their stability and the
reduction of surface defects are big challenges and effective
surface passivation is needed. Passivations via organic ligands
have been shown to be imperfect and hinder the charge transfer in
devices. Three different QD systems, chosen as exemplars of
different approaches to surface passivation, have been investigated
with synchrotron-radiation (SR) depth- profiling X-ray
photoelectron spectroscopy (XPS). With this technique the chemical
composition of the top few nanometres of a sample can be studied
with depth.The study of CdTe QDs with and without a chloride
treatment revealed the presence of stoichiometric particles prior
to, and the likely coexistence of Cl atoms and organic ligands on
the surfaces of the QDs after the treatment. The chloride treatment
led to a better surface passivation of the QDs resulting in
photoluminescence quantum yields of up to 97.2%. Shell thickness
estimations using a core/shell/shell model were performed of the
chloride treated sample and XPS highlighted the complexity of the
structure of the sample. CdTe QDs passivated by a thick CdSe shell
were investigated. Indications for an improvement of the stability
of the QDs against oxidation were found. The Se:Te ratio was
equivalent to a CdSe shell of 0.3-0.4 nm which was significantly
smaller than intended, indicating that the butylamine ligand
exchange and/or the washing of the sample reduced the thickness of
the CdSe shell drastically. The third system studied was PbS QDs
that were passivated with a thin CdS shell. XPS of the thoroughly
washed QDs confirmed the presence of Cd in an amount equivalent to
a 0.13-0.18 nm thick shell. This is thicker than the 0.05 nm shell
expected from absorption spectroscopy. A study of ageing of the
PbS/CdS QDs revealed that oxidation took place on the surface of
the QDs. It was found that sulfur oxidised in stages leading to
highly oxidised SO42− components. Upon long-term ageing Pb
oxidised more rapidly than S, and either some Pb and/or Cd
migration or some decomposition of the QDs occurred. The PbS/CdS
nanoparticles were more stable than a comparable PbS colloidal
quantum dot sample from the literature. The study of the PbS/CdS
QDs prior to and after the second wash- ing cycle after a
mercaptopropionic acid (MPA) ligand exchange revealed, amongst
other things, the removal of MPA and a reduction of the Cd:Pb ratio
indicating that (parts of) the QDs decomposed through the ligand
exchange or the washing.In addition to the results of the
nanoparticles studied some limitations of the study of colloidal
QDs with SR depth-profiling XPS are discussed.
None
None
Advisors/Committee Members: BINKS, DAVID DJ, Flavell, Wendy, Binks, David.
Subjects/Keywords: XPS; synchrotron radiation; quantum dot
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Radtke, H. (2016). Surface Properties of Quantum Dots for Next Generation
Solar Cells. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:306345
Chicago Manual of Style (16th Edition):
Radtke, Hanna. “Surface Properties of Quantum Dots for Next Generation
Solar Cells.” 2016. Doctoral Dissertation, University of Manchester. Accessed April 18, 2021.
http://www.manchester.ac.uk/escholar/uk-ac-man-scw:306345.
MLA Handbook (7th Edition):
Radtke, Hanna. “Surface Properties of Quantum Dots for Next Generation
Solar Cells.” 2016. Web. 18 Apr 2021.
Vancouver:
Radtke H. Surface Properties of Quantum Dots for Next Generation
Solar Cells. [Internet] [Doctoral dissertation]. University of Manchester; 2016. [cited 2021 Apr 18].
Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:306345.
Council of Science Editors:
Radtke H. Surface Properties of Quantum Dots for Next Generation
Solar Cells. [Doctoral Dissertation]. University of Manchester; 2016. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:306345

University of New South Wales
20.
Teh, Zhi Li.
Optimization of PbS Hole Transport Layer using Hybrid Ligand Treatment.
Degree: Photovoltaics & Renewable Energy Engineering, 2018, University of New South Wales
URL: http://handle.unsw.edu.au/1959.4/60402
;
https://unsworks.unsw.edu.au/fapi/datastream/unsworks:52041/SOURCE02?view=true
► Quantum dots have emerged as a promising low-cost solution processable solar harvesting material, with efficiencies having increased to 12% within a relatively short 10-year time…
(more)
▼ Quantum dots have emerged as a promising low-cost solution processable solar harvesting material, with efficiencies having increased to 12% within a relatively short 10-year time span since its inception. This technology is also driven by the flexibility to fine tune the bandgap and electronic properties via surface ligand engineering.Of the different quantum
dot materials, PbS quantum dots have been demonstrated to be the most promising. PbS quantum
dot solar cells were responsible for the certified efficiency of 12% in 2018, and have demonstrated good air stability, indicating the opportunity for large scale commercial implementation in the future. This high efficiency was achieved by utilizing a n+-n-p structure where the n-doped and p-doped layers were based on PbS quantum dots passivated with different ligands.The p-type layer has generally suffered from low mobility. This is due to the organic ligand 1,2-ethanedithiol that is used to modify the quantum
dot surface such that p-doping is achieved. This naturally limits the device thickness as the carrier diffusion length is limited by the low mobility. The work done in this thesis aims to improve the properties of the p-type layer through hybrid ligand treatments.By treating the p-type layer with two types of ligands, 3-mercaptopropionic acid and 1,2-ethanedithiol, the PbS quantum surface was passivated by a combination of the two ligands. The combination of the two ligands resulted in an overall improvement in open circuit voltage, fill factor and current density, leading to an improvement in cell efficiency from 6-8% to 9-10%, with a champion cell efficiency of 10.4%. This achievement was a result of a reduction in interdot distance, leading to an improvement in film conductivity.The hybrid ligand treatment conditions also drastically affect the results. 1,2-ethanedithiol treatment concentration particularly affected the penetration of the ligand into the active layer, which resulted in an undesirable drop in current density. The thesis concluded that the treatment with low mobility organic ligands should be done minimally to only passivate the hole transport layer without further deeper penetration into the n-type layers.
Advisors/Committee Members: Huang, Shujuan, Photovoltaics & Renewable Energy Engineering, Faculty of Engineering, UNSW, Patterson, Robert, Photovoltaics & Renewable Energy Engineering, Faculty of Engineering, UNSW, Conibeer, Gavin, Photovoltaics & Renewable Energy Engineering, Faculty of Engineering, UNSW.
Subjects/Keywords: Quantum dot; Hybrid ligand
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Teh, Z. L. (2018). Optimization of PbS Hole Transport Layer using Hybrid Ligand Treatment. (Masters Thesis). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/60402 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:52041/SOURCE02?view=true
Chicago Manual of Style (16th Edition):
Teh, Zhi Li. “Optimization of PbS Hole Transport Layer using Hybrid Ligand Treatment.” 2018. Masters Thesis, University of New South Wales. Accessed April 18, 2021.
http://handle.unsw.edu.au/1959.4/60402 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:52041/SOURCE02?view=true.
MLA Handbook (7th Edition):
Teh, Zhi Li. “Optimization of PbS Hole Transport Layer using Hybrid Ligand Treatment.” 2018. Web. 18 Apr 2021.
Vancouver:
Teh ZL. Optimization of PbS Hole Transport Layer using Hybrid Ligand Treatment. [Internet] [Masters thesis]. University of New South Wales; 2018. [cited 2021 Apr 18].
Available from: http://handle.unsw.edu.au/1959.4/60402 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:52041/SOURCE02?view=true.
Council of Science Editors:
Teh ZL. Optimization of PbS Hole Transport Layer using Hybrid Ligand Treatment. [Masters Thesis]. University of New South Wales; 2018. Available from: http://handle.unsw.edu.au/1959.4/60402 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:52041/SOURCE02?view=true

University of New South Wales
21.
Kanodarwala, Fehmida.
Synthesis, Characterisation and Functionalisation of CdSe Quantum Dots.
Degree: Chemistry, 2012, University of New South Wales
URL: http://handle.unsw.edu.au/1959.4/52569
;
https://unsworks.unsw.edu.au/fapi/datastream/unsworks:11242/SOURCE01?view=true
► To date, quantum dots (QDs) have been synthesized through a number of different processes ranging from colloidal synthesis to electrochemical methods to chemical vapour deposition…
(more)
▼ To date, quantum dots (QDs) have been synthesized through a number of different processes ranging from colloidal synthesis to electrochemical methods to chemical vapour deposition (CVD). This thesis focuses on the synthesis of high-quality CdSe nanocrystals through a bench- top colloidal synthesis paying particular attention to the effects of varying the reaction temperature and reagent concentrations on the size and crystallinity of the QDs. Powder X-ray diffraction (PXRD) analysis and high-resolution transmission electron microscopy (HRTEM) highlighted a transition of the crystallite phases obtained, from cubic zinc-blende to hexagonal wurtzite and back again to the cubic phase as a function of reaction time. The nature of this phase shift is believed to be due to the rapid growth along the {111} crystallite facets, with the facial facets then 'catching-up', restoring the cubic symmetry. Due to the presence of many NMR active species in CdSe TOP/TOPO QDs viz., 113Cd, 77Se, 13C, 31P, 77S and 1H solid-state nuclear magnetic resonance spectroscopy (SS-NMR) was used to investigate the interaction of the organic capping agent and the QD core.High-quality TOP/TOPO capped CdSe QDs displaying a narrow emission band were then grafted onto graphene nanosheets through a simple wet chemical procedure. A significant red- shift of both the broad absorption and narrow emission spectra of the QDs was observed upon attachment to graphene, as determined by UV-vis absorption and photoluminescence spectroscopy, whilst HRTEM data clearly shows the successful decoration of CdSe QDs on the graphene sheets. This type of nanocomposite may have potential applications in the fields of optics, biological imaging and sensing.
Advisors/Committee Members: Stride, John, Chemistry, Faculty of Science, UNSW.
Subjects/Keywords: Graphene; CdSe; Quantum dot
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Kanodarwala, F. (2012). Synthesis, Characterisation and Functionalisation of CdSe Quantum Dots. (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/52569 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:11242/SOURCE01?view=true
Chicago Manual of Style (16th Edition):
Kanodarwala, Fehmida. “Synthesis, Characterisation and Functionalisation of CdSe Quantum Dots.” 2012. Doctoral Dissertation, University of New South Wales. Accessed April 18, 2021.
http://handle.unsw.edu.au/1959.4/52569 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:11242/SOURCE01?view=true.
MLA Handbook (7th Edition):
Kanodarwala, Fehmida. “Synthesis, Characterisation and Functionalisation of CdSe Quantum Dots.” 2012. Web. 18 Apr 2021.
Vancouver:
Kanodarwala F. Synthesis, Characterisation and Functionalisation of CdSe Quantum Dots. [Internet] [Doctoral dissertation]. University of New South Wales; 2012. [cited 2021 Apr 18].
Available from: http://handle.unsw.edu.au/1959.4/52569 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:11242/SOURCE01?view=true.
Council of Science Editors:
Kanodarwala F. Synthesis, Characterisation and Functionalisation of CdSe Quantum Dots. [Doctoral Dissertation]. University of New South Wales; 2012. Available from: http://handle.unsw.edu.au/1959.4/52569 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:11242/SOURCE01?view=true

University of Texas – Austin
22.
Lei, Kin Wai.
Template-assembly and spectroscopic study of colloidal quantum dot molecules.
Degree: PhD, Materials Science & Engineering, 2014, University of Texas – Austin
URL: http://hdl.handle.net/2152/46488
► Block copolymer template-assembly of quantum dots and plasmonic nanostructures is developed to provide a well-controlled platform to study the electronic coupling and Förster resonance energy…
(more)
▼ Block copolymer template-assembly of quantum dots and plasmonic nanostructures is developed to provide a well-controlled platform to study the electronic coupling and Förster resonance energy transfer (FRET) between quantum dots (QDs), as well as the influence of surface plasmons on energy transfer. By fine-tuning the aspect ratio of the geometric features of PS-b-PMMA copolymer template, QDs are assembled into an array of QD clusters within nanoscopic holes on the template using capillary force assembly. Coupled QD clusters, termed quantum
dot molecules (QDMs), are assembled in an array to probe the local coupling within QD molecules when the native insulating ligands are exchanged with shorter ligands. From absorption measurement of 1st exciton peak position of PbSe QDMs upon ligand exchange, a larger red-shift is found for QDMs than for a close packed film of PbSe QDs with the same ligand exchange, demonstrating localized electronic coupling of these QD molecules. Template-assembly of nanoparticles is further generalized to uniformly couple QDs clusters with plasmonic nanodisks of noble metals. Using PS nanospheres as reactive ion etch mask, Au nanodisks are fabricated on CdSe/ZnS core shell QD clusters, separated by a tunable space layer of PMMA. This highly controllable surface plasmon-coupled QD system minimizes the uncertainty in interfacial homogeneity, characterized by cross sectional scanning electron microscopy (SEM). Photoluminescence (PL) peak ratio of donor to acceptor emission and donor lifetime measurements show strong evidence of surface plasmon coupled energy transfer between donor-acceptor QDs, which depends on the position of the surface plasmon peaks as well as the separation between plasmonic structure and FRET QD clusters. The result suggests that a larger overlap of surface plasmon peak with the emission peak of acceptor leads to greater decrease in PL lifetime of donor. Donor lifetime decreases dramatically in the presence of both acceptor and surface plasmon compared to just in the presence of surface plasmon. Coupling between plasmonic nanodisks and QD clusters also decreases and results in longer donor lifetime as the thickness of PMMA separation layer increases.
Advisors/Committee Members: Fan, Donglei (advisor), Zhu, Xiaoyang, 1963- (advisor), Li, Xiaoqin (Elaine) (committee member), Korgel, Brian (committee member), Mullins, Charles B (committee member).
Subjects/Keywords: Quantum dot molecules; Plasmonic; FRET
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Lei, K. W. (2014). Template-assembly and spectroscopic study of colloidal quantum dot molecules. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/46488
Chicago Manual of Style (16th Edition):
Lei, Kin Wai. “Template-assembly and spectroscopic study of colloidal quantum dot molecules.” 2014. Doctoral Dissertation, University of Texas – Austin. Accessed April 18, 2021.
http://hdl.handle.net/2152/46488.
MLA Handbook (7th Edition):
Lei, Kin Wai. “Template-assembly and spectroscopic study of colloidal quantum dot molecules.” 2014. Web. 18 Apr 2021.
Vancouver:
Lei KW. Template-assembly and spectroscopic study of colloidal quantum dot molecules. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2014. [cited 2021 Apr 18].
Available from: http://hdl.handle.net/2152/46488.
Council of Science Editors:
Lei KW. Template-assembly and spectroscopic study of colloidal quantum dot molecules. [Doctoral Dissertation]. University of Texas – Austin; 2014. Available from: http://hdl.handle.net/2152/46488

University of Oklahoma
23.
Cheng, Yang.
Quantum dots for Photovoltaic Applications.
Degree: PhD, 2017, University of Oklahoma
URL: http://hdl.handle.net/11244/52730
► During the past century, impacts of climate change on both natural and human systems have been observed worldwide. Numerous scientific investigations suggest a strong correlation…
(more)
▼ During the past century, impacts of climate change on both natural and human systems have been observed worldwide. Numerous scientific investigations suggest a strong correlation between the global warming and greenhouse gas (GHG) emissions. CO2 emission accounts for 78% of the GHG emissions, and 35% of this CO2 comes from electricity generation. Reduction of GHG emission from the electricity generation would therefore be beneficial to decrease global warming.
As a renewable energy source, in comparison with conventional fossil fuels, solar energy has limitless supply, is accessible in most geographic locations, and is much cleaner. Currently, solar energy is economically viable in areas where the infrastructure is limited, or the GHG emissions are restricted by policy. To further facilitate the ubiquitous deployment of solar energy on a tera-watt utility scale, further increases in power conversion efficiency and reductions in cost are still required of solar cell technology.
Third generation solar cells are emerging solar cell technologies, which are predicted to operate beyond the Shockley-Queisser limit for single bandgap cells. Nanostructured materials are under investigation as potential candidates for next generation photovoltaic technologies. In this dissertation, one type of nanostructured material, semiconductor quantum dots (QDs), were studied for their potential applications for next-generation photovoltaics.
Epitaxial self-assembled InAs/GaAsSb QD solar cells are investigated for applications as intermediate band solar cells. These systems have a theoretical efficiency of ∼ 50% with a simple single junction design. Two sets of optical InAs/GaAsSb QD samples grown by Molecular Beam Epitaxy (MBE), one set with various InAs deposition thicknesses, and the other set with different percentages of Sb composition in the barrier, were studied to determine the optimal growth conditions in terms of QD density and uniformity. A deposition thickness of 3 monolayers (ML) and 14% Sb matrix composition were shown to yield uniform QDs with the highest QD density ~ 3.5 X 10
11 /cm
2 and a quasi-flat valance band alignment.
Four p-i-n GaAs solar cells with different intrinsic region designs were then grown by MBE. An unusually large reduction of the Voc and a complex behavior of Jsc were both observed. A detailed experimental investigation of these devices supports the hypothesis that thermal activation of defects or ionization of impurities in the lattice induces a transition from that dominated by radiative recombination to non-radiative processes. This results in a quenching of the photoluminescence and electroluminescence intensity and a decrease the z-factor from 2 to 1, with increasing temperature. The 1.1% lattice mismatch between the GaAs substrate and GaAsSb matrix contributes to the defect formation, which serves as the main limitation of the performance of InAs/GaAsSb quantum
dot solar cells presented in this work.
PbS/ZnO colloidal QD solar cells are investigated for thin film…
Advisors/Committee Members: Sellers, Ian (advisor), Mullen, Kieran (committee member), Santos, Michael (committee member), Abraham, Eric (committee member), Shi, Zhisheng (committee member).
Subjects/Keywords: Photovoltaic; Quantum dot; Solar cell
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APA (6th Edition):
Cheng, Y. (2017). Quantum dots for Photovoltaic Applications. (Doctoral Dissertation). University of Oklahoma. Retrieved from http://hdl.handle.net/11244/52730
Chicago Manual of Style (16th Edition):
Cheng, Yang. “Quantum dots for Photovoltaic Applications.” 2017. Doctoral Dissertation, University of Oklahoma. Accessed April 18, 2021.
http://hdl.handle.net/11244/52730.
MLA Handbook (7th Edition):
Cheng, Yang. “Quantum dots for Photovoltaic Applications.” 2017. Web. 18 Apr 2021.
Vancouver:
Cheng Y. Quantum dots for Photovoltaic Applications. [Internet] [Doctoral dissertation]. University of Oklahoma; 2017. [cited 2021 Apr 18].
Available from: http://hdl.handle.net/11244/52730.
Council of Science Editors:
Cheng Y. Quantum dots for Photovoltaic Applications. [Doctoral Dissertation]. University of Oklahoma; 2017. Available from: http://hdl.handle.net/11244/52730

Utah State University
24.
Turner, Nicole.
Tropical Arithmetics and Dot Product Representations of Graphs.
Degree: MS, Mathematics and Statistics, 2015, Utah State University
URL: https://digitalcommons.usu.edu/etd/4460
► In tropical algebras we substitute min or max for the typical addition and then substitute addition for multiplication. A dot product representation of a…
(more)
▼ In tropical algebras we substitute min or max for the typical addition and then substitute addition for multiplication. A
dot product representation of a graph assigns each vertex of the graph a vector such that two edges are adjacent if and only if the
dot product of their vectors is greater than some chosen threshold. The resultS of creating
dot product representations of graphs using tropical algebras are examined. In particular we examine the tropical
dot product dimensions of graphs and establish connections to threshold graphs and the threshold dimension of a graph.
Advisors/Committee Members: David Brown, ;.
Subjects/Keywords: tropical arithmetics; dot product; Mathematics
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APA ·
Chicago ·
MLA ·
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CSE |
Export
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APA (6th Edition):
Turner, N. (2015). Tropical Arithmetics and Dot Product Representations of Graphs. (Masters Thesis). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/4460
Chicago Manual of Style (16th Edition):
Turner, Nicole. “Tropical Arithmetics and Dot Product Representations of Graphs.” 2015. Masters Thesis, Utah State University. Accessed April 18, 2021.
https://digitalcommons.usu.edu/etd/4460.
MLA Handbook (7th Edition):
Turner, Nicole. “Tropical Arithmetics and Dot Product Representations of Graphs.” 2015. Web. 18 Apr 2021.
Vancouver:
Turner N. Tropical Arithmetics and Dot Product Representations of Graphs. [Internet] [Masters thesis]. Utah State University; 2015. [cited 2021 Apr 18].
Available from: https://digitalcommons.usu.edu/etd/4460.
Council of Science Editors:
Turner N. Tropical Arithmetics and Dot Product Representations of Graphs. [Masters Thesis]. Utah State University; 2015. Available from: https://digitalcommons.usu.edu/etd/4460
25.
Pathak, Pawan.
Chalcogenide Sensitized Carbon Based TiO2 Nanomaterial For Solar Driven Applications.
Degree: 2017, University of Nevada – Reno
URL: http://hdl.handle.net/11714/2084
► The demand for renewable energy is growing because fossils fuels are depleting at a rapid pace. Solar energy an abundant green energy resource. Utilizing this…
(more)
▼ The demand for renewable energy is growing because fossils fuels are depleting at a rapid pace. Solar energy an abundant green energy resource. Utilizing this resource in a smart manner can resolve energy-crisis related issues. Sun light can be efficiently harvested using semiconductor based materials by utilizing photo-generated charges for numerous beneficial applications. The main goal of this thesis is to synthesize different nanostructures of TiO2, develop a novel method of coupling and synthesizing chalcogenide nanocrystals with TiO2 and to study the charge transportation effects of the various carbon allotropes in the chalcogenide nanocrystal sensitized TiO2 nanostructure.We have fabricated different nanostructures of TiO2 as solar energy harvesting materials. Effects of the different phases of TiO2 have also been studied. The anatase phase of TiO2 is more photoactive than the rutile phase of TiO2, and the higher dimension of the TiO2 can increase the surface area of the material which can produce higher photocurrent.Since TiO2 only absorbs in the UV range; to increase the absorbance TiO2 should be coupled to visible light absorbing materials. This dissertation presents a simple approach to synthesize and couple chalcogenide nanocrystals with TiO2 nanostructure to form a heterostructured composite. An atmospheric pressure based, single precursor, one-pot approach has been developed and tested to assemble chalcogenide nanocrystal on the TiO2 surface. Surface characterization using microscopy, X-ray diffraction, and elemental analysis indicates the formation of nanocrystals along the nanotube walls and inter-tubular spacing. Optical measurements indicate that the chalcogenide nanocrystals absorb in the visible region and demonstrate an increase in photocurrent in comparison to bare TiO2 nanostructure. The CdS synthesized TiO2 nanostructure produced the highest photocurrent as measured in the three electrodesystem. We have also assembled the PbS nanocrystal sensitized photoanode using the one pot method.Finally, the charge transportation effect of carbon allotropes has been studied. For this we assembled TiO2 conductive carbon chalcogenide nanocomposite system. Surface and elemental characterization using electron microscopy, EDX (energy dispersive x-ray) and x-ray diffraction pattern, provide the insights into the assembly of the nanostructure. Optical absorbance, Photo chronometry, Linear sweep voltammetry, and electrochemical impedance analysis have been used to provide opto-electronic performance of the material. We have studied the loading effect of various carbon allotropes, [fullerene (C60), reduced graphene oxide (RGO), carbon nanotubes (CNTs), and graphene quantum dots (GQDs)], loading effect of chalcogenide, and effect of nitrogen doping on the carbon allotropes to optimize the performance of the heterostructure.This dissertation is expected to impact the materials synthesis strategies and assemble the nanostructures used in composite electrode driven applications in the area of photo electrochemistry,…
Advisors/Committee Members: Subramanian, Vaidyanathan Ravi (advisor), Fuchs, Alan (committee member), Hiibel, Sage R. (committee member), Chandra, Dhanesh (committee member), Pathak, Siddhartha Sid (committee member), Yang, Yu Frank (committee member).
Subjects/Keywords: Quantum dot; Semiconductor; Solar Energy
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Pathak, P. (2017). Chalcogenide Sensitized Carbon Based TiO2 Nanomaterial For Solar Driven Applications. (Thesis). University of Nevada – Reno. Retrieved from http://hdl.handle.net/11714/2084
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Pathak, Pawan. “Chalcogenide Sensitized Carbon Based TiO2 Nanomaterial For Solar Driven Applications.” 2017. Thesis, University of Nevada – Reno. Accessed April 18, 2021.
http://hdl.handle.net/11714/2084.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Pathak, Pawan. “Chalcogenide Sensitized Carbon Based TiO2 Nanomaterial For Solar Driven Applications.” 2017. Web. 18 Apr 2021.
Vancouver:
Pathak P. Chalcogenide Sensitized Carbon Based TiO2 Nanomaterial For Solar Driven Applications. [Internet] [Thesis]. University of Nevada – Reno; 2017. [cited 2021 Apr 18].
Available from: http://hdl.handle.net/11714/2084.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Pathak P. Chalcogenide Sensitized Carbon Based TiO2 Nanomaterial For Solar Driven Applications. [Thesis]. University of Nevada – Reno; 2017. Available from: http://hdl.handle.net/11714/2084
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universidade Federal de Viçosa
26.
Carla Leite Medeiros.
DNA vaccine using syntetic gene derivate of peptide SBm 7462 anti-tick Rhipicephalus (Boophilus) microplus and assessment of immune response in Balb/c mouse.
Degree: 2008, Universidade Federal de Viçosa
URL: http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=1496
► O Rhipicephalus (Boophilus) microplus é um dos mais importantes artrópodes em medicina veterinária devido perdas econômicas e problemas de saúde causados na produção de gado…
(more)
▼ O Rhipicephalus (Boophilus) microplus é um dos mais importantes artrópodes em medicina veterinária devido perdas econômicas e problemas de saúde causados na produção de gado na América Central e do Sul, bem como na Austrália. Como alternativa ao controle químico, a imunização de bovinos com antígeno proteíco Bm86 induz uma resposta imune protetora. Um peptídeo sintético, SBm 7462, derivado da Bm86, tem obtido excelentes resultados no controle de carrapatos. A construção e síntese de uma sequência nucleotidíca baseada neste peptídeo podem ser útil para o desenho de uma vacina de DNA que tem muitas vantagens sob uma vacina sintética. Um gene, denominado seq1, foi construído repetindo três vezes a sequência nucleotidídica do SBm 7462. Ele foi clonado no vetor de expressão em mamíferos, pCIneo, transfectado em células VERO e injetado em camundongos BALB/c. Dois métodos foram usados para análise da expressão do peptídeo in vitro: DOTELISA e PAP. Em ambos, os resultados demonstraram que a seqüência nucleotídica (seq1) não havia sido expressa em células VERO. In vivo, quando camundongos foram inoculados com o cassete de expressão eles não responderam ao ELISA. Eles elevaram os títulos de anticorpos, apenas, quando inoculados com o peptídeo sintético SBm 7462. Os melhores títulos de imunoglobulinas foram vistos quando o SBm 7462 foi administrado subcutâneamente. Após isso, inserimos uma mutação no início do seq 1, porém, o sequenciamento demonstrou que nenhum códon de iniciação (ATG) tinha sido inserido.
The Rhipicephalus (Boophilus) microplus is one of the most important arthropods in veterinary medicine due economic losses and health problems caused in cattle production, mainly in Central and South America, as well as in Australia. As an alternative to chemical control, immunization of bovines with Bm86 antigen to induce a protective immune response. A synthetic peptide, SBm 7462, derived from Bm86, has been shown great results in control of ticks. The construction and synthesis of one nucleotide sequence based on this peptide might be useful for design a DNA vaccine that has many advances than peptide vaccine. A gene, called seq1, was constructed with a three repetition of nucleotide sequence of SBm 7462. It was cloned into a pCIneo vector expression in mammals, transfected in VERO cells and injected in BALB/c mouse. Two methods were used to analysis of peptide expression in vitro: DOTELISA and PAP. In both, the results showed that the nucleotide sequence (seq1) had not been express in VERO cells. In vivo, when mice were inoculated with the expression cassette they did not response in ELISA. They elevated antibody titles only when vaccinated with the syntetic peptide SBm 7462. And, the best titles of immunoglobulins were seen when the SBm 7462 was administered subcutaneously. After that, we insert a mutation at the begging of seq1, but, the sequenciament demonstrated that any initiation codon (ATG) had been inserted.
Advisors/Committee Members: Sérgio Oliveira de Paula, Marlene Isabel Vargas Viloria, Juliana Lopes Rangel Fietto, Márcia Rogéria de Almeida Lamêgo, Joaquín Hernán Patarroyo Salcedo.
Subjects/Keywords: Diagnóstico; ELISA; MEDICINA VETERINARIA PREVENTIVA; Diagnosis; ELISA; Dot-ELISA; Dot-ELISA
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Medeiros, C. L. (2008). DNA vaccine using syntetic gene derivate of peptide SBm 7462 anti-tick Rhipicephalus (Boophilus) microplus and assessment of immune response in Balb/c mouse. (Thesis). Universidade Federal de Viçosa. Retrieved from http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=1496
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Medeiros, Carla Leite. “DNA vaccine using syntetic gene derivate of peptide SBm 7462 anti-tick Rhipicephalus (Boophilus) microplus and assessment of immune response in Balb/c mouse.” 2008. Thesis, Universidade Federal de Viçosa. Accessed April 18, 2021.
http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=1496.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Medeiros, Carla Leite. “DNA vaccine using syntetic gene derivate of peptide SBm 7462 anti-tick Rhipicephalus (Boophilus) microplus and assessment of immune response in Balb/c mouse.” 2008. Web. 18 Apr 2021.
Vancouver:
Medeiros CL. DNA vaccine using syntetic gene derivate of peptide SBm 7462 anti-tick Rhipicephalus (Boophilus) microplus and assessment of immune response in Balb/c mouse. [Internet] [Thesis]. Universidade Federal de Viçosa; 2008. [cited 2021 Apr 18].
Available from: http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=1496.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Medeiros CL. DNA vaccine using syntetic gene derivate of peptide SBm 7462 anti-tick Rhipicephalus (Boophilus) microplus and assessment of immune response in Balb/c mouse. [Thesis]. Universidade Federal de Viçosa; 2008. Available from: http://www.tede.ufv.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=1496
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
27.
Berbel Manaia, Eloísa.
Conception de Quantum dots à base d’oxyde de zinc (ZnO) pour des applications en bio-imagerie de nanosystèmes lipidiques : Zinc oxide (ZnO) based quantum dots for bioimaging applications of lipid nanocarriers.
Degree: Docteur es, Pharmacotechnie et biopharmacie, 2016, Université Paris-Saclay (ComUE); Universidade estadual paulista (São Paulo, Brésil)
URL: http://www.theses.fr/2016SACLS127
► Les systèmes théranostiques, consistant en un dispositif unique contenant des agents de diagnostic et des principes actifs, suscitent un interêt accru car ils peuvent améliorer…
(more)
▼ Les systèmes théranostiques, consistant en un dispositif unique contenant des agents de diagnostic et des principes actifs, suscitent un interêt accru car ils peuvent améliorer le traitement de maladies telles que le cancer en réduisant les effets secondaires des médicaments et en permettant un suivi du traitement. L’objectif de ce travail était d’insérer des Quantum Dots (QDs) à base de ZnO dans des nanoparticules lipidiques pouvant délivrer un principe actif anti-cancéreux. Nous avons d’abord cherché à synthétiser des QDs présentant une structure coeur-coquille ZnO/ZnS pour améliorer leurs propriétés de luminescence. La spectroscopie d’absorption des rayons X, associée à des techniques usuelles de caractérisation, a permis de déterminer les conditions de synthèse conduisant à la formation d’une structure coeur-coquille. Néanmoins, l’émission dans le visible de ces QDs n’était pas satisfaisante. Des QDs dopés par des ions Mg ont donc été synthétisés. L’intensité de leur luminescence passe par un maximum pour une concentration molaire nominale d’ions Mg dans le milieu de réaction égale à 20%. Les QDs Zn0.8Mg0.2O présentent un rendement quantique (QY) six fois plus grand (QY ~64%) que celui des QDs de ZnO non dopés (QY ~ 10%). Les QDs dont la surface a été modifiée par de l’acide oléique (OA) forment une suspension colloidale stable dans le chloroforme et le toluène. Le rendement quantique des QDs OA-Zn0.8Mg0.2O était environ quatre fois plus élevé (Qy ~40%) que celui des QDs OA-ZnO. Les QDs Zn0.8Mg0.2O et OA-Zn0.8Mg0.2O ont été incorporés dans des nanoparticules lipidiques ayant un diamètre hydrodynamique moyen de l’ordre de 100- 220 nm. Les nanoparticules lipidiques solides (SLN) contenant des QDs sont restées stables dans différents milieux biologiques pendant trois heures à 37°C. Des mesures de fluorescence sur des suspensions de macrophages J774 ont montré une faible augmentation de l’intensité de l’émission visible pour les cellules incubées avec 2 mg/mL de SLNs luminescentes pendant 50 min, suggérant une internalisation partielle des nanoparticules par les macrophages. Malheureusement, ces résultats n’ont pas pu être confirmés par vidéo-microscopie et microscopie de fluorescence sur les cellules parce que les conditions expérimentales ( longueurs d’onde d’excitation et d’émission possibles) ne permettaient pas d’observer un signal supérieur à celui de l'auto-fluorescence des cellules.
Theranostic systems consist of a single device containing therapeutic and diagnosis agents and receive increased attention because these devices can improve the therapy of diseases such as cancer, decreasing the toxic side effects and permitting to monitor the treatment. The aim of this work was to develop theranostic systems consisting of lipid based nanocarriers containing ZnO based quantum dots (QDs) as luminescent probes, and allowing to encapsulate a model drug for cancer therapy. Firstly, the synthesis of ZnO/ZnS QDs was studied, aiming to achieve improved luminescent properties. In this step, X-Rays Absorption…
Advisors/Committee Members: Bourgaux, Claudie (thesis director).
Subjects/Keywords: ZnO; Quantum dot; Bioimagerie; ZnO; Quantum dot; Bioimaging
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Berbel Manaia, E. (2016). Conception de Quantum dots à base d’oxyde de zinc (ZnO) pour des applications en bio-imagerie de nanosystèmes lipidiques : Zinc oxide (ZnO) based quantum dots for bioimaging applications of lipid nanocarriers. (Doctoral Dissertation). Université Paris-Saclay (ComUE); Universidade estadual paulista (São Paulo, Brésil). Retrieved from http://www.theses.fr/2016SACLS127
Chicago Manual of Style (16th Edition):
Berbel Manaia, Eloísa. “Conception de Quantum dots à base d’oxyde de zinc (ZnO) pour des applications en bio-imagerie de nanosystèmes lipidiques : Zinc oxide (ZnO) based quantum dots for bioimaging applications of lipid nanocarriers.” 2016. Doctoral Dissertation, Université Paris-Saclay (ComUE); Universidade estadual paulista (São Paulo, Brésil). Accessed April 18, 2021.
http://www.theses.fr/2016SACLS127.
MLA Handbook (7th Edition):
Berbel Manaia, Eloísa. “Conception de Quantum dots à base d’oxyde de zinc (ZnO) pour des applications en bio-imagerie de nanosystèmes lipidiques : Zinc oxide (ZnO) based quantum dots for bioimaging applications of lipid nanocarriers.” 2016. Web. 18 Apr 2021.
Vancouver:
Berbel Manaia E. Conception de Quantum dots à base d’oxyde de zinc (ZnO) pour des applications en bio-imagerie de nanosystèmes lipidiques : Zinc oxide (ZnO) based quantum dots for bioimaging applications of lipid nanocarriers. [Internet] [Doctoral dissertation]. Université Paris-Saclay (ComUE); Universidade estadual paulista (São Paulo, Brésil); 2016. [cited 2021 Apr 18].
Available from: http://www.theses.fr/2016SACLS127.
Council of Science Editors:
Berbel Manaia E. Conception de Quantum dots à base d’oxyde de zinc (ZnO) pour des applications en bio-imagerie de nanosystèmes lipidiques : Zinc oxide (ZnO) based quantum dots for bioimaging applications of lipid nanocarriers. [Doctoral Dissertation]. Université Paris-Saclay (ComUE); Universidade estadual paulista (São Paulo, Brésil); 2016. Available from: http://www.theses.fr/2016SACLS127
28.
Tumanov, Dmitrii.
Actuation and motion detection of different micro- and nano-structures : Actionnement et détection du mouvement de différentes micro- et nano-structures.
Degree: Docteur es, Nanophysique, 2017, Université Grenoble Alpes (ComUE)
URL: http://www.theses.fr/2017GREAY045
► Cette thèse s’inscrit dans le domaine de l'opto-mécanique et propose l'utilisation de différentes techniques de mesure et de manipulation des propriétés mécaniques de nano-structures.La première…
(more)
▼ Cette thèse s’inscrit dans le domaine de l'opto-mécanique et propose l'utilisation de différentes techniques de mesure et de manipulation des propriétés mécaniques de nano-structures.La première partie de ce travail est dédiée aux fils photoniques. Ces objets sont des structures en GaAs en forme de cône inversé, avec une longueur d’une dizaine de µm et un diamètre inférieur au µm, contenant une couche de boîtes quantiques à l'intérieur. Nous avons démontré une méthode de réglage statique du spectre de photoluminescence de ces boîtes quantiques sensibles à la contrainte, en utilisant des nano-manipulateurs pour contraindre mécaniquement les fils. De plus, grâce à la dépendance spatiale du décalage spectral, il est possible d’établir une carte de la position des boîtes quantiques.La deuxième partie de ce travail concerne la mise en mouvement de ces fils photoniques à l’aide d’un faisceau laser modulé à la fréquence de résonance mécanique. Les mécanismes physiques à l’origine de ces effets sont présentés et discutés.Dans la troisième partie, nous présentons une méthode permettant l’observation d'oscillations mécaniques de nano-fils fins (moins de 50 nm de diamètre) en utilisant un microscope électronique à balayage. Cette méthode originale offre la possibilité de contrôler de nombreux types de structures micro et nano-électromécaniques, dont la détection du mouvement n’est pas possible optiquement en raison de la limite de diffraction de la lumière. De plus, cette méthode permet également d'agir sur les propriétés mécaniques des structures via une force de contre-réaction qui devient non négligeable pour ces structures très légères. Cela ouvre la possibilité d'études fondamentales complémentaires liées au refroidissement du mouvement mécanique.
This thesis is related to the field of opto-mechanics and the use of different techniques for the measurement and manipulation of mechanical properties of nano-structures.First part of the work is dedicated to the photonic wires. These objects are GaAs structures with an inverted conical shape of length of the order of 10 µm and diameter of less than 1 µm, containing a layer of InAs quantum dots inside. Wide-range static stress-tuning of quantum dots photoluminescence spectrum was demonstrated using nano-manipulators to bend the wires. Additionally, owing to the spatial dependence of the spectral shift, this technique offers the possibility of QD positions mapping.The second part of this work concerns the optical actuation of these photonic wires. A laser beam focused on the wire and modulated at the mechanical resonance frequency can set the wire in motion. The physical mechanisms responsible for these effects are presented and discussed.In the third part is presented a method enabling the detection of mechanical oscillations of small (less than 50 nm in diameter) nanowires with the use of a Scanning Electron Microscope. This original method offers a possibility to detect the motion of many types of micro- and nano-electromechanical devices which are too small to be detected…
Advisors/Committee Members: Poizat, Jean-Philippe (thesis director).
Subjects/Keywords: Optique quantique; Quantum dot; Optomécanique; Quantum optics; Quantum dot; Optomechanics; 530
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Tumanov, D. (2017). Actuation and motion detection of different micro- and nano-structures : Actionnement et détection du mouvement de différentes micro- et nano-structures. (Doctoral Dissertation). Université Grenoble Alpes (ComUE). Retrieved from http://www.theses.fr/2017GREAY045
Chicago Manual of Style (16th Edition):
Tumanov, Dmitrii. “Actuation and motion detection of different micro- and nano-structures : Actionnement et détection du mouvement de différentes micro- et nano-structures.” 2017. Doctoral Dissertation, Université Grenoble Alpes (ComUE). Accessed April 18, 2021.
http://www.theses.fr/2017GREAY045.
MLA Handbook (7th Edition):
Tumanov, Dmitrii. “Actuation and motion detection of different micro- and nano-structures : Actionnement et détection du mouvement de différentes micro- et nano-structures.” 2017. Web. 18 Apr 2021.
Vancouver:
Tumanov D. Actuation and motion detection of different micro- and nano-structures : Actionnement et détection du mouvement de différentes micro- et nano-structures. [Internet] [Doctoral dissertation]. Université Grenoble Alpes (ComUE); 2017. [cited 2021 Apr 18].
Available from: http://www.theses.fr/2017GREAY045.
Council of Science Editors:
Tumanov D. Actuation and motion detection of different micro- and nano-structures : Actionnement et détection du mouvement de différentes micro- et nano-structures. [Doctoral Dissertation]. Université Grenoble Alpes (ComUE); 2017. Available from: http://www.theses.fr/2017GREAY045

Clemson University
29.
Seda, Brandon.
UPTAKE AND TOXIC EFFECTS OF SURFACE MODIFIED NANOMATERIALS IN FRESHWATER AQUATIC ORGANISMS.
Degree: PhD, Environmental Toxicology, 2012, Clemson University
URL: https://tigerprints.clemson.edu/all_dissertations/921
► Nanomaterials are a class of materials with unique properties due to their size, and the association of these properties with the toxicity of nanomaterials is…
(more)
▼ Nanomaterials are a class of materials with unique properties due to their size, and the association of these properties with the toxicity of nanomaterials is poorly understood. The present study assessed the toxic effects of stable aqueous colloidal suspensions of three distinctly different classes of nanomaterials in aquatic organisms. The fullerene, C70, was stabilized through non-covalent surface modification with gallic acid. Toxicity of C70-gallic acid was confirmed to exhibit similar toxic effects as C60-fullerene, including changes in antioxidative processes in Daphnia magna. Daphnia magna fecundity was significantly reduced in 21d bioassays at C70-gallic concentrations below quantifiable limits (0.03 mg/L C70). Antioxidant enzyme activities of glutathione peroxidase and superoxide dismutase as well as lipid peroxidation suggested that exposed organisms experienced oxidative stress. Carbon dots are a class of nanomaterials proposed for use as nontoxic alternatives to semiconductor quantum dots for photoluminescent applications, because of the difference in toxicity of their core components: carbon as opposed to heavy metals. In vivo analysis of treated organisms by confocal fluorescence microscopy revealed carbon dots were absorbed and systemically distributed regardless of particle size. The present study did not find any evidence of acute toxicity at concentrations up to 10mg/L carbon dots. These concentrations also failed to produce negative effects in Ceriodaphnia dubia bioassays to predict chronic toxicity. Carbon dots also failed to elicit developmental toxic effects in zebrafish. The toxic effects of semiconductor quantum dots have been partially attributed to the release of heavy metals with their degradation, particularly cadmium. Laser ablation inductively coupled mass spectrometry was used to compare the uptake of cadmium, selenium and zinc in Daphnia magna treated to CdSe/ZnS quantum dots or CdCl2. These quantum dots were observed to accumulate primarily in the gut lumen and no evidence of uptake of intact quantum dots was observed. Evidence suggests degradation of the quantum dots release of component ions with accumulation of Cd and Zn in the gut epithelia. Quantum dots elicited acute toxicity at 0.66 mg/L Cd but promoted increased reproduction at 40 µg/L.
Advisors/Committee Members: Klaine, Steven J, Baldwin , William` S, Lee , Cindy M, Mount , Andrew S, Roberts , Aaron P.
Subjects/Keywords: carbon dot; daphnia; fullerene; nanomaterials; quantum dot; zebrafish; Medical Toxicology
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APA ·
Chicago ·
MLA ·
Vancouver ·
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APA (6th Edition):
Seda, B. (2012). UPTAKE AND TOXIC EFFECTS OF SURFACE MODIFIED NANOMATERIALS IN FRESHWATER AQUATIC ORGANISMS. (Doctoral Dissertation). Clemson University. Retrieved from https://tigerprints.clemson.edu/all_dissertations/921
Chicago Manual of Style (16th Edition):
Seda, Brandon. “UPTAKE AND TOXIC EFFECTS OF SURFACE MODIFIED NANOMATERIALS IN FRESHWATER AQUATIC ORGANISMS.” 2012. Doctoral Dissertation, Clemson University. Accessed April 18, 2021.
https://tigerprints.clemson.edu/all_dissertations/921.
MLA Handbook (7th Edition):
Seda, Brandon. “UPTAKE AND TOXIC EFFECTS OF SURFACE MODIFIED NANOMATERIALS IN FRESHWATER AQUATIC ORGANISMS.” 2012. Web. 18 Apr 2021.
Vancouver:
Seda B. UPTAKE AND TOXIC EFFECTS OF SURFACE MODIFIED NANOMATERIALS IN FRESHWATER AQUATIC ORGANISMS. [Internet] [Doctoral dissertation]. Clemson University; 2012. [cited 2021 Apr 18].
Available from: https://tigerprints.clemson.edu/all_dissertations/921.
Council of Science Editors:
Seda B. UPTAKE AND TOXIC EFFECTS OF SURFACE MODIFIED NANOMATERIALS IN FRESHWATER AQUATIC ORGANISMS. [Doctoral Dissertation]. Clemson University; 2012. Available from: https://tigerprints.clemson.edu/all_dissertations/921

King Abdullah University of Science and Technology
30.
Rafi, Kazi.
Device Characterization of High Performance Quantum Dot Comb Laser.
Degree: Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division, 2012, King Abdullah University of Science and Technology
URL: http://hdl.handle.net/10754/215949
► The cost effective comb based laser sources are considered to be one of the prominent emitters used in optical communication (OC) and photonic integrated circuits…
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▼ The cost effective comb based laser sources are considered to be one of the prominent emitters used in optical communication (OC) and photonic integrated circuits (PIC). With the rising demand for delivering triple-play services (voice, data and video) in FTTH and FTTP-based WDM-PON networks, metropolitan area network (MAN), and short-reach rack-to-rack optical computer communications, a versatile and cost effective WDM transmitter design is required, where several DFB lasers can be replaced by a cost effective broadband comb laser to support on-chip optical signaling. Therefore, high performance quantum
dot (Q.
Dot) comb lasers need to satisfy several challenges before real system implementations. These challenges include a high uniform broadband gain spectrum from the active layer, small relative intensity noise with lower bit error rate (BER) and better temperature stability.
Thus, such short wavelength comb lasers offering higher bandwidth can be a feasible solution to address these challenges. However, they still require thorough characterization before implementation. In this project, we briefly characterized the novel quantum
dot comb laser using duty cycle based electrical injection and temperature variations where we have observed the presence of reduced thermal conductivity in the active layer. This phenomenon is responsible for the degradation of device performance. Hence, different performance trends, such as broadband emission and spectrum stability were studied with pulse and continuous electrical pumping. The tested comb laser is found to be an attractive solution for several applications but requires further experiments in order to be considered for photonic intergraded circuits and to support next generation computer-communications.
Advisors/Committee Members: Ooi, Boon S. (advisor), Alsunaidi, Mohammad A. (committee member), Bagci, Hakan (committee member).
Subjects/Keywords: Comb laser; Broadband Laser; Quantum-Dot; Duty cycle; Cavity; Quantum-Dot
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Record Details
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Rafi, K. (2012). Device Characterization of High Performance Quantum Dot Comb Laser. (Thesis). King Abdullah University of Science and Technology. Retrieved from http://hdl.handle.net/10754/215949
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Rafi, Kazi. “Device Characterization of High Performance Quantum Dot Comb Laser.” 2012. Thesis, King Abdullah University of Science and Technology. Accessed April 18, 2021.
http://hdl.handle.net/10754/215949.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Rafi, Kazi. “Device Characterization of High Performance Quantum Dot Comb Laser.” 2012. Web. 18 Apr 2021.
Vancouver:
Rafi K. Device Characterization of High Performance Quantum Dot Comb Laser. [Internet] [Thesis]. King Abdullah University of Science and Technology; 2012. [cited 2021 Apr 18].
Available from: http://hdl.handle.net/10754/215949.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Rafi K. Device Characterization of High Performance Quantum Dot Comb Laser. [Thesis]. King Abdullah University of Science and Technology; 2012. Available from: http://hdl.handle.net/10754/215949
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
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