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Linköping University
1.
Johansson, Viktor.
Off-normal Film Growth by High Power Impulse Magnetron Sputtering.
Degree: Plasma and Coating Physics, 2011, Linköping University
URL: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-71315
► In this study we contribute towards establishing the process-microstructure relationships in thin films grown off-normally by ionized physical vapor deposition. High power impulse magnetron…
(more)
▼ In this study we contribute towards establishing the process-microstructure relationships in thin films grown off-normally by ionized physical vapor deposition. High power impulse magnetron sputtering (HiPIMS) is used at various peak target powers and deposition rates to grow copper (Cu) and chromium (Cr) films from a cathode placed at an angle 90 degrees with respect to the substrate normal. Films are also deposited by direct current magnetron sputtering (DCMS), for reference. Scanning electron microscopy is employed to investigate column tilting and deposition rate while X-ray diffraction techniques are utilized to study crystal structure and grain tilting.
It is demonstrated that the columnar structure of Cu tilts less with respect to the substrate normal as the peak target power increases, which has been shown to correspond to a higher ionization degree of the sputtered material [1]. One explanation for this is that the trajectories of the ions are deflected towards the substrate and therefore deposited closer to the normal, as has been suggested in the literature (see e.g. [2]). Energetic bombardment by ions might also increase surface mobility, which further raises the columns. It is also concluded that the change in tilting is not caused by a lower deposition rate obtained when employing HiPIMS. The same is not seen for Cr, where all deposited films exhibit the same tilting angle. When the column tilting of Cu and Cr is compared a large difference is observed, where the columns of Cr are closer to the substrate normal. The reasons for this difference are discussed in light of nucleation and growth characteristics in the two materials.
X-ray diffraction analysis reveals that Cu films exhibit an (111) fiber texture. Comparison of films grown by DCMS and HiPIMS shows that in the HiPIMS cases the grains are closer to the surface normal and better oriented with each other. In the case of Cr both DCMS and HiPIMS grown films are (110) biaxially aligned.
Subjects/Keywords: HiPIMS; HPPMS; glancing angle deposition
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APA (6th Edition):
Johansson, V. (2011). Off-normal Film Growth by High Power Impulse Magnetron Sputtering. (Thesis). Linköping University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-71315
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):
Johansson, Viktor. “Off-normal Film Growth by High Power Impulse Magnetron Sputtering.” 2011. Thesis, Linköping University. Accessed January 20, 2021.
http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-71315.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Johansson, Viktor. “Off-normal Film Growth by High Power Impulse Magnetron Sputtering.” 2011. Web. 20 Jan 2021.
Vancouver:
Johansson V. Off-normal Film Growth by High Power Impulse Magnetron Sputtering. [Internet] [Thesis]. Linköping University; 2011. [cited 2021 Jan 20].
Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-71315.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Johansson V. Off-normal Film Growth by High Power Impulse Magnetron Sputtering. [Thesis]. Linköping University; 2011. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-71315
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Alberta
2.
Sorge, Jason B.
Argon-Assisted Glancing Angle Deposition.
Degree: PhD, Department of Electrical and Computer
Engineering, 2012, University of Alberta
URL: https://era.library.ualberta.ca/files/2b88qd83j
► Glancing angle deposition (GLAD) is a physical vapour deposition (PVD) technique capable of fabricating highly porous thin films with controllable film morphology on the 10…
(more)
▼ Glancing angle deposition (GLAD) is a physical vapour
deposition (PVD) technique capable of fabricating highly porous
thin films with controllable film morphology on the 10 nm length
scale. The GLAD process is flexible and may be used on virtually
any PVD-compatible material. This makes GLAD a useful technique in
many applications including photovoltaics, humidity sensing, and
photonic devices. Conventional, dense films grown at normal
incidence concurrent with ion or energetic neutral bombardment have
been reported to have higher film density than unbombarded films.
In a similar sense, highly porous GLAD films grown with concurrent
bombardment should generate films with new interesting properties
and extend the versatility of the GLAD process. The research
presented in this thesis investigates the use of energetic neutral
bombardment during GLAD film growth to produce new film
morphologies. Here, with increasing bombardment, the column tilt
increases, film density increases, and specific surface area
decreases. A film simultaneously exhibiting high column tilt angle
and film density is enabled by incorporating bombardment concurrent
with GLAD film growth. This in turn results in films with larger
principal refractive indices, but a smaller normalized in-plane
birefringence. Bombarded films were also found to be compatible
with the phisweep process which helps decouple the column tilt
angle from film density. Characterization of the
bombardment-assisted growth process indicates that both sputtering
and bombardment-induced diffusion play a role in the modification
of film morphology. The film property modifications which arise as
a result of bombardment-assisted growth lead to device improvements
in a number of applications. Bombardment was used to fabricate
square spiral photonic crystal structures with increased column
tilt which bear a closer resemblance to optimized simulated
structures than conventionally-grown GLAD films. The increase in
column tilt angle and film density were found to be beneficial in
the fabrication of circular polarization filters, where bombarded
films were found to exhibit larger selective circular behaviour
than in unbombarded films. The morphology modification was also
found to be beneficial in humidity sensing applications where the
bombarded films demonstrated an increase in the capacitive
response.
Subjects/Keywords: Glancing; Argon; Bombardment; Deposition; Assisted; Angle
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APA (6th Edition):
Sorge, J. B. (2012). Argon-Assisted Glancing Angle Deposition. (Doctoral Dissertation). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/2b88qd83j
Chicago Manual of Style (16th Edition):
Sorge, Jason B. “Argon-Assisted Glancing Angle Deposition.” 2012. Doctoral Dissertation, University of Alberta. Accessed January 20, 2021.
https://era.library.ualberta.ca/files/2b88qd83j.
MLA Handbook (7th Edition):
Sorge, Jason B. “Argon-Assisted Glancing Angle Deposition.” 2012. Web. 20 Jan 2021.
Vancouver:
Sorge JB. Argon-Assisted Glancing Angle Deposition. [Internet] [Doctoral dissertation]. University of Alberta; 2012. [cited 2021 Jan 20].
Available from: https://era.library.ualberta.ca/files/2b88qd83j.
Council of Science Editors:
Sorge JB. Argon-Assisted Glancing Angle Deposition. [Doctoral Dissertation]. University of Alberta; 2012. Available from: https://era.library.ualberta.ca/files/2b88qd83j

University of Alberta
3.
Krause, Kathleen.
Characterization and modification of obliquely deposited
nanostructures.
Degree: PhD, Department of Electrical and Computer
Engineering, 2011, University of Alberta
URL: https://era.library.ualberta.ca/files/k643b2263
► The glancing angle deposition (GLAD) technique is now used by over one hundred research groups, each requiring a fundamental understanding of and new techniques for…
(more)
▼ The glancing angle deposition (GLAD) technique is now
used by over one hundred research groups, each requiring a
fundamental understanding of and new techniques for modulating the
properties of GLAD in order to optimize their results. In this
thesis, the structural characteristics of nanostructured columnar
films were therefore investigated and quantified using gas
adsorption porosimetry, focused ion beam tomography, optical
methods, scanning electron microscopy (SEM) image analysis.
Questions such as ``What is their surface area?'', ``How porous are
they?'', ``How do the films evolve as they grow?'', and ``Can the
structural characteristics be manipulated?'' were answered. Surface
areas, determined from krypton gas adsorption, were found to be
high, making GLAD promising for applications requiring large and
rough surface interfaces. Specifically, peak specific surface areas
of 700 +/- 150 m2g-1, 325 +/- 40 m2g-1, 50 +/- 6 m2g-1
were measured for silica (SiO2), titania (TiO2) and indium tin
oxide (ITO), respectively. Broad pore distributions, with peaks in
the low mesoporous regime of 2 nm to 5 nm, were also determined.
The internal surface area may also be up to three times as high as
that of the externally exposed surface. As well, despite the fact
that GLAD column broaden as they grow, the surface area increases
linearly with film thickness. Focused ion beam milling, with
concurrent SEM imaging, was then employed to investigate and
reconstruct the three-dimensional structure of GLAD films in the
tens of nanometers regime not measurable by krypton gas adsorption
porosimetry. The measured growth scaling trends agreed with
previous findings, but were determined using only one sample,
instead of multiple samples of increasing thickness. Mean column
diameters, center-to-center spacings, void spacings, and column
densities were found to scale with thickness as w = (9.4 +/- 3.0)
t0.35 +/- 0.09 nm, c = (24.8 +/- 5.2) t0.31 +/- 0.08 nm, v =
(15.2 +/- 3.8) t0.25 +/- 0.06 nm, and d = (3400 +/- 2500)
t-0.65 +/- 0.15 columns um-2, respectively. Finally,
spatially graded nanostructures were demonstrated by extending the
GLAD technique to include macroscopic shadowing. Optically
transparent, graded thickness and pitch helical films were
fabricated with polarization selectivity over a spatial range of 30
mm, concurrent with 70 nm spectral tunability. These structures
will be useful for tunable frequency photonic
devices.
Subjects/Keywords: porosimetry; focused ion beam; nanostructure; glancing angle deposition
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Krause, K. (2011). Characterization and modification of obliquely deposited
nanostructures. (Doctoral Dissertation). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/k643b2263
Chicago Manual of Style (16th Edition):
Krause, Kathleen. “Characterization and modification of obliquely deposited
nanostructures.” 2011. Doctoral Dissertation, University of Alberta. Accessed January 20, 2021.
https://era.library.ualberta.ca/files/k643b2263.
MLA Handbook (7th Edition):
Krause, Kathleen. “Characterization and modification of obliquely deposited
nanostructures.” 2011. Web. 20 Jan 2021.
Vancouver:
Krause K. Characterization and modification of obliquely deposited
nanostructures. [Internet] [Doctoral dissertation]. University of Alberta; 2011. [cited 2021 Jan 20].
Available from: https://era.library.ualberta.ca/files/k643b2263.
Council of Science Editors:
Krause K. Characterization and modification of obliquely deposited
nanostructures. [Doctoral Dissertation]. University of Alberta; 2011. Available from: https://era.library.ualberta.ca/files/k643b2263

University of Alberta
4.
Wakefield, Nicholas George.
Fundamentals of Film Growth by Glancing Angle Deposition for
Inorganic and Inorganic/Liquid Crystal Hybrid Optical
Systems.
Degree: PhD, Department of Electrical and Computer
Engineering, 2011, University of Alberta
URL: https://era.library.ualberta.ca/files/j38608266
► This thesis investigates two facets of thin film growth via glancing angle deposition. The first half of the work focuses on the fundamentals of film…
(more)
▼ This thesis investigates two facets of thin film
growth via glancing angle deposition. The first half of the work
focuses on the fundamentals of film growth with a focus on
uniformity and optical design. This portion of the thesis addresses
important engineering questions that are relevant to future
commercialization of this technology, by investigating issues of
scalability and repeatability, which are crucial for large scale
manufacturing. This research is also directly applicable to
laboratory research as it allows for combinatorial approaches to
experimental design, and addresses experimental uncertainty in
device performance. This work underscores the importance of film
density and column tilt, and the material constants that quantify
these parameters. This work illustrates how knowledge of these
constants is sufficient to predict a wide variety of important film
properties, including thickness, density and column tilt
non-uniformities, and can be used to predict and design the
anisotropic optical properties of columnar thin films. This design
flexibility is illustrated experimentally in the fabrication of a
novel, single material, thin film, normal-incidence, reflective
linear polarizer. The second half of the thesis investigates the
interaction between liquid crystalline molecules and nanoporous
metal oxide films. It builds upon prior work by a number of
researchers, and contributes a two-dimensional finite element model
based on an elastic model of nematic liquid crystals in order to
explain molecular alignment in these systems. The model indicates
how film column tilt, film density and columnar aspect ratio
contribute to molecular alignment, and suggests methods by which to
achieve the desired film alignment. Experimentally, a number of
reactive and non-reactive nematic liquid crystals are studied in
silica thin films, with both hydrophilic and hydrophobic surface
chemistries to examine real-world behaviour of a variety of
systems. Finally, a system of fluorescent, reactive liquid crystals
embedded in silica thin films placed on top of a transparent
substrate is investigated for use as a luminescent solar
concentrator, and is found to significantly enhance device
performance.
Subjects/Keywords: Glancing angle deposition; Nanotechnology; Uniformity; Photonics; Metal oxide; Liquid crystal
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Wakefield, N. G. (2011). Fundamentals of Film Growth by Glancing Angle Deposition for
Inorganic and Inorganic/Liquid Crystal Hybrid Optical
Systems. (Doctoral Dissertation). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/j38608266
Chicago Manual of Style (16th Edition):
Wakefield, Nicholas George. “Fundamentals of Film Growth by Glancing Angle Deposition for
Inorganic and Inorganic/Liquid Crystal Hybrid Optical
Systems.” 2011. Doctoral Dissertation, University of Alberta. Accessed January 20, 2021.
https://era.library.ualberta.ca/files/j38608266.
MLA Handbook (7th Edition):
Wakefield, Nicholas George. “Fundamentals of Film Growth by Glancing Angle Deposition for
Inorganic and Inorganic/Liquid Crystal Hybrid Optical
Systems.” 2011. Web. 20 Jan 2021.
Vancouver:
Wakefield NG. Fundamentals of Film Growth by Glancing Angle Deposition for
Inorganic and Inorganic/Liquid Crystal Hybrid Optical
Systems. [Internet] [Doctoral dissertation]. University of Alberta; 2011. [cited 2021 Jan 20].
Available from: https://era.library.ualberta.ca/files/j38608266.
Council of Science Editors:
Wakefield NG. Fundamentals of Film Growth by Glancing Angle Deposition for
Inorganic and Inorganic/Liquid Crystal Hybrid Optical
Systems. [Doctoral Dissertation]. University of Alberta; 2011. Available from: https://era.library.ualberta.ca/files/j38608266

University of Alberta
5.
Hawkeye, Matthew Martin.
Engineering optical nanomaterials using glancing angle
deposition.
Degree: PhD, Department of Electrical and Computer
Engineering, 2010, University of Alberta
URL: https://era.library.ualberta.ca/files/w0892c03d
► Advanced optical technologies profoundly impact countless aspects of modern life. At the heart of these technologies is the manipulation of light using optical materials. Currently,…
(more)
▼ Advanced optical technologies profoundly impact
countless aspects of modern life. At the heart of these
technologies is the manipulation of light using optical materials.
Currently, optical technologies are created using naturally
occurring materials. However, a new and exciting approach is to use
nanomaterials for technology development. Nanomaterials are
artificially constructed material systems with precisely engineered
nanostructures. Many technological revolutions await the
development of new nanoscale fabrication methods that must provide
the ability to control, enhance, and engineer the optical
properties of these artificial constructs. This thesis responds to
the challenges of nanofabrication by examining glancing angle
deposition (GLAD) and improving its optical-nanomaterial
fabrication capabilities. GLAD is a bottom-up nanotechnology
fabrication method, recognized for its flexibility and precision.
The GLAD technique provides the ability to controllably fabricate
high-surface-area porous materials, to create structurally induced
optical-anisotropy in isotropic materials, and to tailor the
refractive index of a single material. These three advantages allow
GLAD to assemble optical nanomaterials into a range of complex
one-dimensional photonic crystals (PCs). This thesis improves upon
previous GLAD optical results in a number of important areas.
Multiple optical measurement and modeling techniques were developed
for GLAD-fabricated TiO2 nanomaterials. The successful
characterization of these nanomaterials was extended to engineer PC
structures with great precision and a superior degree of control.
The high surface area of basic PC structures was exploited to
fabricate an optimized colourimetric sensor with excellent
performance. This colourimetric sensor required no power source and
no read-out system other than the human eye, making it a highly
attractive sensing approach. Incorporating engineered defects into
GLAD-fabricated PCs established a new level of design
sophistication. Several PC defect structures were examined in
detail, including spacing layers and index profile phase-shifts.
Remarkable control over defect properties was achieved and
intriguing polarization-sensitive optical effects were investigated
in anisotropic defect layers. The success of these results
demonstrates the precision and flexibilty of the GLAD technique in
fabricating optical nanomaterials and advanced photonic
devices.
Subjects/Keywords: Thin film engineering; Nanotechnology; Glancing angle deposition; Photonic crystals; Optics
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Hawkeye, M. M. (2010). Engineering optical nanomaterials using glancing angle
deposition. (Doctoral Dissertation). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/w0892c03d
Chicago Manual of Style (16th Edition):
Hawkeye, Matthew Martin. “Engineering optical nanomaterials using glancing angle
deposition.” 2010. Doctoral Dissertation, University of Alberta. Accessed January 20, 2021.
https://era.library.ualberta.ca/files/w0892c03d.
MLA Handbook (7th Edition):
Hawkeye, Matthew Martin. “Engineering optical nanomaterials using glancing angle
deposition.” 2010. Web. 20 Jan 2021.
Vancouver:
Hawkeye MM. Engineering optical nanomaterials using glancing angle
deposition. [Internet] [Doctoral dissertation]. University of Alberta; 2010. [cited 2021 Jan 20].
Available from: https://era.library.ualberta.ca/files/w0892c03d.
Council of Science Editors:
Hawkeye MM. Engineering optical nanomaterials using glancing angle
deposition. [Doctoral Dissertation]. University of Alberta; 2010. Available from: https://era.library.ualberta.ca/files/w0892c03d

University of Alberta
6.
Thomas, Michael.
Nanostructured Inverted Organic Photovoltaic Cells.
Degree: PhD, Department of Electrical and Computer
Engineering, 2013, University of Alberta
URL: https://era.library.ualberta.ca/files/rj430458x
► Organic photovoltaic cells (OPVs)are promising devices for inexpensive power generation from sunlight. Organic semiconductors, the basic materials for OPVs, can be fabricated using a broad…
(more)
▼ Organic photovoltaic cells (OPVs)are promising devices
for inexpensive power generation from sunlight. Organic
semiconductors, the basic materials for OPVs, can be fabricated
using a broad range of fabrication technologies from vapor
deposition to solution processing. Upon light absorption, a
strongly bound exciton is generated which can diffuse to a
donor-acceptor heterojunction. At this interface it can be
dissociated into free charge carriers which can be collected by the
device electrodes. A major challenge for OPVs are short exciton
diffusion lengths of up to 20 nm. Morphology engineering is
required in order to harvest the exciton before it recombines and
improve OPV performance. This work focuses on the study of
nanostructured morphologies for use in inverted architecture OPVs.
Glancing angle deposition (GLAD)is employed to fabricate
nanocolumnar acceptor films. Through combining these nanostructured
C60 films with a conjugated polymer donor P3CBT and a small
molecule 3-Q, inverted OPVs are fabricated with the goal to analyze
effect of morphology engineering on device performance. A major
challenge was that C60 were found to be soluble in most commonly
used organic solvents such as dichlorobenzene or chloroform.
Although this challenge has limited the donor choice and therefore
has limited device performance, a significant effect of morphology
engineering could be observed. All GLAD structured C60 OPVs
outperformed state of the art architectures such as planar films
and bulk heterojunctions fabricated with the same materials. For
P3CBT in particular the GLAD structured devices exhibited a twofold
increase in power conversion efficiency compared with bulk
heterojunctions and a fourfold increase compared with planar
devices. In a further study, the acceptor materials PTCDA and C60
were co-evaporated into a single film. PTCDA is stable against
non-polar organic solvents while C60 provides a high electron
mobility. Nanocolumnar acceptor blended PTCDA:C60 films were proven
to remain stable when treated with dichlorobenzene. Furthermore,
optical and electronic properties of these acceptor blends were
investigated.
Subjects/Keywords: bulk heterojunction; glancing angle deposition; nanostructure; C60 Fullerene; organic photovoltaic
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Thomas, M. (2013). Nanostructured Inverted Organic Photovoltaic Cells. (Doctoral Dissertation). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/rj430458x
Chicago Manual of Style (16th Edition):
Thomas, Michael. “Nanostructured Inverted Organic Photovoltaic Cells.” 2013. Doctoral Dissertation, University of Alberta. Accessed January 20, 2021.
https://era.library.ualberta.ca/files/rj430458x.
MLA Handbook (7th Edition):
Thomas, Michael. “Nanostructured Inverted Organic Photovoltaic Cells.” 2013. Web. 20 Jan 2021.
Vancouver:
Thomas M. Nanostructured Inverted Organic Photovoltaic Cells. [Internet] [Doctoral dissertation]. University of Alberta; 2013. [cited 2021 Jan 20].
Available from: https://era.library.ualberta.ca/files/rj430458x.
Council of Science Editors:
Thomas M. Nanostructured Inverted Organic Photovoltaic Cells. [Doctoral Dissertation]. University of Alberta; 2013. Available from: https://era.library.ualberta.ca/files/rj430458x

University of Alberta
7.
Francis,Sonja A.
Development of Platinum and Platinum-Nickel Catalysts for
Fuel Cell Applications.
Degree: PhD, Department of Chemistry, 2013, University of Alberta
URL: https://era.library.ualberta.ca/files/fq977w389
► This dissertation describes the use of a novel Pt deposition to prepare nickel- and carbon-supported platinum catalysts. The deposition is referred to herein as the…
(more)
▼ This dissertation describes the use of a novel Pt
deposition to prepare nickel- and carbon-supported platinum
catalysts. The deposition is referred to herein as the platinum
counter electrode deposition. The source of platinum is the
sacrificial dissolution of a blacked platinum counter electrode
under galvanostatic conditions that results in conformal, ultra-low
loadings of platinum onto the substrates. It is shown that all or
most of the platinum is located at the surface of the catalyst in
the case where Pt is co-deposited with nickel from a solution of
its salt. Furthermore, the deposition is self-limiting. Four major
studies based on catalysts synthesized by this method are
presented. The opening study describes the deposition of platinum
and co-deposition of platinum and nickel onto nickel foam
substrates as well as the electronic and microscopic
characteristics of the deposits. Further, the activity of the
prepared catalysts towards 2-propanol oxidation in base was
explored. Above 500 mV, the nickel and platinum co-deposit on
nickel foam was 9 times more active than blackened Pt gauze, while
the platinum deposit on nickel foam was 38 times more active. The
second study compares a conventional platinum deposition with the
platinum counter electrode deposition on nickel nanopillar films
prepared by Glancing Angle Deposition. The deposits prepared via
our method were more active towards 2-propanol oxidation than both
traditionally prepared deposits and commercially available
state-of-the-art unsupported platinum nanoparticles. The same
nanopillar-supported platinum catalysts were prepared on glassy
carbon disks for the third study. Activity towards oxygen reduction
in base and acid was investigated. This is the first oxygen
reduction study on nickel-platinum glancing angle deposited
structures and the first such study in basic media. The ultimate
study describes the modification of the platinum counter electrode
deposition to accommodate particulate substrates. As a proof of
concept, we deposited platinum onto Vulcan carbon to fabricate a
carbon-supported platinum catalyst that was microscopically and
electrochemically characterized and tested for oxygen reduction.
The results of this study suggest the utility of this deposition
for a variety of particulate conductive substrates.
Subjects/Keywords: direct alcohol fuel cell; nickel; glancing angle deposition; platinum; 2-propanol
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
A, F. (2013). Development of Platinum and Platinum-Nickel Catalysts for
Fuel Cell Applications. (Doctoral Dissertation). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/fq977w389
Chicago Manual of Style (16th Edition):
A, Francis,Sonja. “Development of Platinum and Platinum-Nickel Catalysts for
Fuel Cell Applications.” 2013. Doctoral Dissertation, University of Alberta. Accessed January 20, 2021.
https://era.library.ualberta.ca/files/fq977w389.
MLA Handbook (7th Edition):
A, Francis,Sonja. “Development of Platinum and Platinum-Nickel Catalysts for
Fuel Cell Applications.” 2013. Web. 20 Jan 2021.
Vancouver:
A F. Development of Platinum and Platinum-Nickel Catalysts for
Fuel Cell Applications. [Internet] [Doctoral dissertation]. University of Alberta; 2013. [cited 2021 Jan 20].
Available from: https://era.library.ualberta.ca/files/fq977w389.
Council of Science Editors:
A F. Development of Platinum and Platinum-Nickel Catalysts for
Fuel Cell Applications. [Doctoral Dissertation]. University of Alberta; 2013. Available from: https://era.library.ualberta.ca/files/fq977w389

University of Alberta
8.
Westwood, Jocelyn N.
High Surface Area Nanoelectromechanical Systems via the
Integration of Glancing Angle Deposition Thin Films.
Degree: MS, Department of Electrical and Computer
Engineering, 2013, University of Alberta
URL: https://era.library.ualberta.ca/files/r207tp74x
► High surface area nanoelectromechanical systems (NEMS) are fabricated using glancing angle deposition (GLAD) thin films as the high surface area layer. The GLAD films are…
(more)
▼ High surface area nanoelectromechanical systems (NEMS)
are fabricated using glancing angle deposition (GLAD) thin films as
the high surface area layer. The GLAD films are deposited on
already-released NEMS cantilevers and doubly clamped beams (DCBs)
with good uniformity. The resonance frequencies of the coated
devices are lower than uncoated NEMS due to mass loading. The
resonance frequencies of the coated cantilevers can be predicted
accurately. The resonance frequencies of the DCBs are difficult to
predict because of compressive stress in the substrate from which
the devices are fabricated. The quality factors of the coated
devices are approximately one order of magnitude smaller than the
uncoated devices due to a semi-continuous layer at the base of the
GLAD film. The GLAD film introduces a compressive stress of 5.3-9.3
MPa. The quantification of the stress introduced by the GLAD
indicates that these devices may also be useful as stress
sensors.
Subjects/Keywords: nanoelectromechanical systems; gravimetric sensors; nanofabrication; nanotechnology; glancing angle deposition
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Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Westwood, J. N. (2013). High Surface Area Nanoelectromechanical Systems via the
Integration of Glancing Angle Deposition Thin Films. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/r207tp74x
Chicago Manual of Style (16th Edition):
Westwood, Jocelyn N. “High Surface Area Nanoelectromechanical Systems via the
Integration of Glancing Angle Deposition Thin Films.” 2013. Masters Thesis, University of Alberta. Accessed January 20, 2021.
https://era.library.ualberta.ca/files/r207tp74x.
MLA Handbook (7th Edition):
Westwood, Jocelyn N. “High Surface Area Nanoelectromechanical Systems via the
Integration of Glancing Angle Deposition Thin Films.” 2013. Web. 20 Jan 2021.
Vancouver:
Westwood JN. High Surface Area Nanoelectromechanical Systems via the
Integration of Glancing Angle Deposition Thin Films. [Internet] [Masters thesis]. University of Alberta; 2013. [cited 2021 Jan 20].
Available from: https://era.library.ualberta.ca/files/r207tp74x.
Council of Science Editors:
Westwood JN. High Surface Area Nanoelectromechanical Systems via the
Integration of Glancing Angle Deposition Thin Films. [Masters Thesis]. University of Alberta; 2013. Available from: https://era.library.ualberta.ca/files/r207tp74x

University of Alberta
9.
van Dijken, Jaron G.
Nanostructured Materials for Organic Photovoltaic
Devices.
Degree: PhD, Department of Electrical and Computer
Engineering, 2012, University of Alberta
URL: https://era.library.ualberta.ca/files/rb68xc30t
► This thesis outlines several new approaches to fabricating improved organic solar cell (OSC) designs. Glancing angle deposition (GLAD) was used to grow thin films of…
(more)
▼ This thesis outlines several new approaches to
fabricating improved organic solar cell (OSC) designs. Glancing
angle deposition (GLAD) was used to grow thin films of metal
phthalocyanine (MPc) materials with columnar morphologies suitable
for use in OSCs. Advanced substrate motion techniques were used to
constrain column broadening during growth, in order to approach
diameters comparable to the short exciton diffusion lengths in
these materials. Substrate patterning was used to predefine growth
sites for these columnar films, and thereby regulate column spacing
and improve film uniformity. Increased column densities and
decreased column diameters were achieved as a result. Integration
of columnar films into OSCs was challenged by the sensitivity of
MPc materials to the solvents used to cast the adjacent layer.
Significant recrystallization of the films occurred when directly
contacted by these solvents. Varying degrees of material mixing
between layers were observed as a result of the solvents when
casting the adjacent layer. This result provides an alternative
approach to building a mixed active layer structure, which has so
far only been possible via codeposition of vapors or polymer
blending. Material mixing was shown to improve device performance,
which led to photoconversion efficiencies of up to 3.0% when used
in combination with a GLAD-structured MPc layer. This result stands
among the best results achieved in the literature for these
devices. Optimized devices were enabled by a careful evaluation of
the degradation behavior and thickness effects of the various
device layers. Argon plasma etching was used to structure planar
MPc films and commercial indium tin oxide (ITO). Nanopillar
features emerged in both cases, which are very attractive from an
OSC perspective. The surface composition of these films was altered
by the etching process, resulting in damaged film properties. The
damage to MPc films was irreversible, preventing their ideal
morphologies from improving OSC performance. For ITO, however,
optical and electrical properties were recovered using a two-stage
annealing process, leaving the films fully functional for use in a
variety of optoelectronic devices.
Subjects/Keywords: thin films; organic solar cell; glancing angle deposition
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
van Dijken, J. G. (2012). Nanostructured Materials for Organic Photovoltaic
Devices. (Doctoral Dissertation). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/rb68xc30t
Chicago Manual of Style (16th Edition):
van Dijken, Jaron G. “Nanostructured Materials for Organic Photovoltaic
Devices.” 2012. Doctoral Dissertation, University of Alberta. Accessed January 20, 2021.
https://era.library.ualberta.ca/files/rb68xc30t.
MLA Handbook (7th Edition):
van Dijken, Jaron G. “Nanostructured Materials for Organic Photovoltaic
Devices.” 2012. Web. 20 Jan 2021.
Vancouver:
van Dijken JG. Nanostructured Materials for Organic Photovoltaic
Devices. [Internet] [Doctoral dissertation]. University of Alberta; 2012. [cited 2021 Jan 20].
Available from: https://era.library.ualberta.ca/files/rb68xc30t.
Council of Science Editors:
van Dijken JG. Nanostructured Materials for Organic Photovoltaic
Devices. [Doctoral Dissertation]. University of Alberta; 2012. Available from: https://era.library.ualberta.ca/files/rb68xc30t

University of Alberta
10.
Krabbe, Joshua Dirk.
Development of photonic crystal display devices.
Degree: MS, Department of Electrical and Computer
Engineering, 2011, University of Alberta
URL: https://era.library.ualberta.ca/files/xk81jk94m
► This thesis investigates technologies directed towards developing photonic crystal display devices. A switching technology based on dye electrophoretic motion within a 1D porous photonic crystal…
(more)
▼ This thesis investigates technologies directed towards
developing photonic crystal display devices. A switching technology
based on dye electrophoretic motion within a 1D porous photonic
crystal was developed. Dissociated absorbing dye species were moved
through the assembled device and reflectance was controllably
altered by up to 0.4. Refinement of fabrication techniques yielded
a slow switching device, whose time-resolved reflectance data was
analyzed. A wavelength dependence of the device switching speed was
observed. This phenomenon was described by modelling where bandgap
effects match observation. These devices may be improved by
employing a 3D photonic crystal. We developed a nanoimprint
lithography technique for seeding films deposited by GLAD for the
fabrication of 3D square spiral photonic crystals. Parameters for
patterning a precisely defined mould pattern using electron beam
lithography were established. A large area diamond:1 square spiral
photonic crystal was fabricated on the nanoimprinted seeds, and it
exhibited a visible wavelength bandgap.
Subjects/Keywords: glancing angle deposition; photonic crystals; electrophoresis; thin films; nanoimprint lithography
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Krabbe, J. D. (2011). Development of photonic crystal display devices. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/xk81jk94m
Chicago Manual of Style (16th Edition):
Krabbe, Joshua Dirk. “Development of photonic crystal display devices.” 2011. Masters Thesis, University of Alberta. Accessed January 20, 2021.
https://era.library.ualberta.ca/files/xk81jk94m.
MLA Handbook (7th Edition):
Krabbe, Joshua Dirk. “Development of photonic crystal display devices.” 2011. Web. 20 Jan 2021.
Vancouver:
Krabbe JD. Development of photonic crystal display devices. [Internet] [Masters thesis]. University of Alberta; 2011. [cited 2021 Jan 20].
Available from: https://era.library.ualberta.ca/files/xk81jk94m.
Council of Science Editors:
Krabbe JD. Development of photonic crystal display devices. [Masters Thesis]. University of Alberta; 2011. Available from: https://era.library.ualberta.ca/files/xk81jk94m

North Carolina State University
11.
Kiether, William Jay.
Application of Sculptured Thin Film Technology to Metal Oxide Gas Sensors.
Degree: PhD, Electrical Engineering, 2007, North Carolina State University
URL: http://www.lib.ncsu.edu/resolver/1840.16/3698
► The main goal of this research has been the application of glancing angle deposition (GLAD) techniques to create highly porous sculptured thin films (STF) structures…
(more)
▼ The main goal of this research has been the application of
glancing angle deposition (GLAD) techniques to create highly porous sculptured thin films (STF) structures for use as gas sensors. The
glancing angle technique utilizes physical vapor depositions at highly oblique (>70°) angles of incidence to form porous film structures. Process conditions including the
deposition rate, rotation speed, and flux
angle were investigated to produce pillar and chevron formations.
Control of the anatase/rutile percentages in TiO2 gas sensors is critical for design and development. Thin films were deposited using reactive e-beam evaporation with a titanium source melt at various partial pressures of oxygen and argon. Post
deposition anneal studies were conducted in air from 150-900 °C. The combination of reactive evaporation at high oxygen partial pressures and low temperature (150 °C) anneals in air formed films with the highest percentage of anatase. Depositions at lower oxygen partial pressures yielded films with a higher percentage of rutile, which supports the role of oxygen vacancies as nucleation centers for the anatase to rutile transformation. Higher temperature annealing produced rutile films as expected from the thermodynamics of the TiO2 system. After the formation of anatase STF structures, the films displayed a high degree of temperature stability with subsequent annealing. Anatase films structures were still evident even after annealing at 1200 °C in air.
The GLAD technique produces films with preferred crystal orientations which differ based on the
deposition angle. A series of experiments looked at the effect of the
angle of incidence, the
deposition conditions, and the substrate material on the crystal structure of the STF structures. The titanium films did show a dependence of the crystalline structure on the
angle of incidence for both as-deposited films and after oxidation at 900 °C in air.
A conductive MOS sensor was designed based on an anatase chevron formation. Following the fabrication of a sensor test chamber, the sensor response was characterized versus temperature for in argon, air, and hydrogen in argon.
Advisors/Committee Members: Dr. H. Troy Nagle, Committee Chair (advisor).
Subjects/Keywords: anatase rutile glancing angle deposition
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Kiether, W. J. (2007). Application of Sculptured Thin Film Technology to Metal Oxide Gas Sensors. (Doctoral Dissertation). North Carolina State University. Retrieved from http://www.lib.ncsu.edu/resolver/1840.16/3698
Chicago Manual of Style (16th Edition):
Kiether, William Jay. “Application of Sculptured Thin Film Technology to Metal Oxide Gas Sensors.” 2007. Doctoral Dissertation, North Carolina State University. Accessed January 20, 2021.
http://www.lib.ncsu.edu/resolver/1840.16/3698.
MLA Handbook (7th Edition):
Kiether, William Jay. “Application of Sculptured Thin Film Technology to Metal Oxide Gas Sensors.” 2007. Web. 20 Jan 2021.
Vancouver:
Kiether WJ. Application of Sculptured Thin Film Technology to Metal Oxide Gas Sensors. [Internet] [Doctoral dissertation]. North Carolina State University; 2007. [cited 2021 Jan 20].
Available from: http://www.lib.ncsu.edu/resolver/1840.16/3698.
Council of Science Editors:
Kiether WJ. Application of Sculptured Thin Film Technology to Metal Oxide Gas Sensors. [Doctoral Dissertation]. North Carolina State University; 2007. Available from: http://www.lib.ncsu.edu/resolver/1840.16/3698

Virginia Commonwealth University
12.
Alrashid, Ebtihaj, Jr.
Premelting Study of Nickel Nanorod Arrays.
Degree: MS, Physics and Applied Physics, 2013, Virginia Commonwealth University
URL: https://doi.org/10.25772/T1B3-DR91
;
https://scholarscompass.vcu.edu/etd/3037
► In this study, samples of nanoscale structures of nickel (Ni) nanorods were prepared using the glancing angle deposition (GLAD) technique. Annealing was done using a…
(more)
▼ In this study, samples of nanoscale structures of nickel (Ni) nanorods were prepared using the
glancing angle deposition (GLAD) technique. Annealing was done using a split- top tube furnace at high vacuum chamber pressure. The pre-melting of the nanorods was maintained at 500 °C for 30 minutes in all the samples. Using the samples with 90 minutes of GLAD time, the annealing behavior of the nanorods was studied at 300 °C, 400 °C, 500 °C and 600 °C. The nanorods were then imaged using scanning electron microscopy. Using X-ray diffraction, the crystalline microstructures of the nanorods were studied. It was found that with increasing annealing temperatures, the intensity of peaks for both Ni (111) and Ni (200) increased, which indicates that better crystals were formed. The results indicate that re-crystallization occurs after annealing, leading to the formation of larger grain sizes compared to as-deposited grain sizes. Annealing substantially changed the structure of the nanorods, leading to different smoother, more connected crystal structures for the annealed nanorods compared to as-deposited ones.
Advisors/Committee Members: Dexian Jr Ye.
Subjects/Keywords: Premelting; Glancing angle deposition; Annealing; Nanorods; Physical Sciences and Mathematics; Physics
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Alrashid, Ebtihaj, J. (2013). Premelting Study of Nickel Nanorod Arrays. (Thesis). Virginia Commonwealth University. Retrieved from https://doi.org/10.25772/T1B3-DR91 ; https://scholarscompass.vcu.edu/etd/3037
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):
Alrashid, Ebtihaj, Jr. “Premelting Study of Nickel Nanorod Arrays.” 2013. Thesis, Virginia Commonwealth University. Accessed January 20, 2021.
https://doi.org/10.25772/T1B3-DR91 ; https://scholarscompass.vcu.edu/etd/3037.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Alrashid, Ebtihaj, Jr. “Premelting Study of Nickel Nanorod Arrays.” 2013. Web. 20 Jan 2021.
Vancouver:
Alrashid, Ebtihaj J. Premelting Study of Nickel Nanorod Arrays. [Internet] [Thesis]. Virginia Commonwealth University; 2013. [cited 2021 Jan 20].
Available from: https://doi.org/10.25772/T1B3-DR91 ; https://scholarscompass.vcu.edu/etd/3037.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Alrashid, Ebtihaj J. Premelting Study of Nickel Nanorod Arrays. [Thesis]. Virginia Commonwealth University; 2013. Available from: https://doi.org/10.25772/T1B3-DR91 ; https://scholarscompass.vcu.edu/etd/3037
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Georgia
13.
Fan, Jianguo.
Static and dynamic wetting of aligned nanorod arrays.
Degree: 2014, University of Georgia
URL: http://hdl.handle.net/10724/24394
► A systematic study of the static and dynamic wettability of nanorod array surfaces prepared by glancing angle deposition is presented. The static wettability of the…
(more)
▼ A systematic study of the static and dynamic wettability of nanorod array surfaces prepared by glancing angle deposition is presented. The static wettability of the aligned Si nanorod array surfaces was investigated by the sessile drop
method. As-prepared nanorod samples were hydrophilic, while after hydrofluoric acid treatment or fluorocarbon coating, they became hydrophobic. The contact angle ¸ was oosuccessfully tailored from superhydrophilic (¸ = 3) to superhydrophobic (¸ = 170) by
controlling the nanorod height, rod-rod separation, and chemical treatment. For the as-prepared samples, a wetting transition from a porous surface to a hemi-wicking surface was observed as the nanorod height increases. For HF treated samples, a
transition from rough surface to composite surface was also observed. The transitions took place at the same critical nanorod height about 150 nm. The superhydrophilic and superhydrophobic behaviors as well as the wetting transitions are well interpreted
by Wenzel’s law and Cassie’s law. In the wetting experiment, nanorods bundled together to form patterns. This nanocarpet phenomenon presents a challenge for high aspect-ratio nanostructures to be used in liquid environments. Both the morphology of the
pattern and the physical origin were investigated theoretically and experimentally. The bundling was caused by unbalanced capillary forces acting on the nanorods either during the spreading process or the drying process. Thus controlling the wetting and
dewetting process may reduce the bundling. Furthermore, the mechanical stability of several nanorod structures was compared and a capping layer method was proposed to minimize the nanorods from bundling. Dynamic spreading and capillary rise experiments
were investigated by fast CCD video imaging. During the spreading of water droplets on the nanorod surface, water also penetrates into the nanorod channels and transports faster than the apparent contact line. The contact line dynamics was similar to
those on flat surfaces due to the spreading of the precursor film inside the nanorod channels ahead of the contact line. And the evolution of the precursor film follows Washburn’s law. The scaling of these dynamics is almost not affected by the nanorod
heights. For the capillary rise, the contact line and precursor dynamics are more complicated and they are affected by the sample size as well as the gravity effect.
Subjects/Keywords: glancing angle deposition; contact angle; wetting; superhydrophobic; nanorod; nanocarpet effect; spreading; capillary rise
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Fan, J. (2014). Static and dynamic wetting of aligned nanorod arrays. (Thesis). University of Georgia. Retrieved from http://hdl.handle.net/10724/24394
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):
Fan, Jianguo. “Static and dynamic wetting of aligned nanorod arrays.” 2014. Thesis, University of Georgia. Accessed January 20, 2021.
http://hdl.handle.net/10724/24394.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Fan, Jianguo. “Static and dynamic wetting of aligned nanorod arrays.” 2014. Web. 20 Jan 2021.
Vancouver:
Fan J. Static and dynamic wetting of aligned nanorod arrays. [Internet] [Thesis]. University of Georgia; 2014. [cited 2021 Jan 20].
Available from: http://hdl.handle.net/10724/24394.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Fan J. Static and dynamic wetting of aligned nanorod arrays. [Thesis]. University of Georgia; 2014. Available from: http://hdl.handle.net/10724/24394
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Alberta
14.
Hunt, Graham A.
Effects of In-Situ Temperature Control on the Nanostructure
of Glancing Angle Deposition Thin Films.
Degree: MS, Department of Electrical and Computer
Engineering, 2013, University of Alberta
URL: https://era.library.ualberta.ca/files/qb98mg615
► Glancing angle deposition (GLAD) is a thin film deposition technique that utilizes oblique vapour incidence and substrate rotation to grow various nanocolumn structures. The growth…
(more)
▼ Glancing angle deposition (GLAD) is a thin film
deposition technique that utilizes oblique vapour incidence and
substrate rotation to grow various nanocolumn structures. The
growth of these structures is heavily influenced by the substrate
temperature during deposition. Therefore, in-situ change of
substrate temperature offers an additional dimension of control for
GLAD growth. This thesis describes the design of a GLAD compatible
heating and cooling system. This system is then used to explore the
effects of substrate temperature on the inclination angle of
slanted posts grown through GLAD. Results varied depending on
material type and material melting temperature. Using the heating
system, a method was developed for producing Sn seeds through
thermal dewetting. SiO2 vertical posts were grown on seeded and
unseeded samples, and a linear relationship was observed between
seed separation and post separation.
Subjects/Keywords: Materials Science; Physical Vapor Deposition; GLAD; Nanotechnology; Glancing Angle Deposition; Thin Films
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Hunt, G. A. (2013). Effects of In-Situ Temperature Control on the Nanostructure
of Glancing Angle Deposition Thin Films. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/qb98mg615
Chicago Manual of Style (16th Edition):
Hunt, Graham A. “Effects of In-Situ Temperature Control on the Nanostructure
of Glancing Angle Deposition Thin Films.” 2013. Masters Thesis, University of Alberta. Accessed January 20, 2021.
https://era.library.ualberta.ca/files/qb98mg615.
MLA Handbook (7th Edition):
Hunt, Graham A. “Effects of In-Situ Temperature Control on the Nanostructure
of Glancing Angle Deposition Thin Films.” 2013. Web. 20 Jan 2021.
Vancouver:
Hunt GA. Effects of In-Situ Temperature Control on the Nanostructure
of Glancing Angle Deposition Thin Films. [Internet] [Masters thesis]. University of Alberta; 2013. [cited 2021 Jan 20].
Available from: https://era.library.ualberta.ca/files/qb98mg615.
Council of Science Editors:
Hunt GA. Effects of In-Situ Temperature Control on the Nanostructure
of Glancing Angle Deposition Thin Films. [Masters Thesis]. University of Alberta; 2013. Available from: https://era.library.ualberta.ca/files/qb98mg615

University of Alberta
15.
Siewert, Joshua M A.
Disassembling glancing angle deposited films for high
throughput growth scaling analysis.
Degree: MS, Department of Electrical and Computer
Engineering, 2012, University of Alberta
URL: https://era.library.ualberta.ca/files/zk51vj00d
► Glancing angle deposition (GLAD) is a thin film fabrication technique capable of creating arrays of nanocolumns from numerous materials. Optimizing these films for applications requires…
(more)
▼ Glancing angle deposition (GLAD) is a thin film
fabrication technique capable of creating arrays of nanocolumns
from numerous materials. Optimizing these films for applications
requires an understanding of their growth, prompting research into
the columns’ growth scaling behaviour. Columns are generally
represented with a power law, capturing broadening in an exponent
p. Existing literature measurements of p are inconsistent and
difficult to repeat, in part due to complex branching in many GLAD
?lms and subjectivity in some existing techniques. This thesis
describes a new method of studying growth scaling by disassembling
films into a solvent and dispersing them across a substrate,
facilitating automated measurement from top-down scanning electron
microscopy. Minimizing the uncertainty and subjectivity introduced
by branching, optimized implementations may permit fully automated
high-throughput film characterization. Initial results track the
influence of deposition rotation on broadening, presenting the
first quantitative trend and potentially improving future
nanostructure morphology control.
Subjects/Keywords: glancing angle deposition; growth scaling; nanostructure; GLAD; broadening; vertical post; sonication; nanocolumn; thin-filim
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Siewert, J. M. A. (2012). Disassembling glancing angle deposited films for high
throughput growth scaling analysis. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/zk51vj00d
Chicago Manual of Style (16th Edition):
Siewert, Joshua M A. “Disassembling glancing angle deposited films for high
throughput growth scaling analysis.” 2012. Masters Thesis, University of Alberta. Accessed January 20, 2021.
https://era.library.ualberta.ca/files/zk51vj00d.
MLA Handbook (7th Edition):
Siewert, Joshua M A. “Disassembling glancing angle deposited films for high
throughput growth scaling analysis.” 2012. Web. 20 Jan 2021.
Vancouver:
Siewert JMA. Disassembling glancing angle deposited films for high
throughput growth scaling analysis. [Internet] [Masters thesis]. University of Alberta; 2012. [cited 2021 Jan 20].
Available from: https://era.library.ualberta.ca/files/zk51vj00d.
Council of Science Editors:
Siewert JMA. Disassembling glancing angle deposited films for high
throughput growth scaling analysis. [Masters Thesis]. University of Alberta; 2012. Available from: https://era.library.ualberta.ca/files/zk51vj00d

University of Alberta
16.
Kwan, Jonathan K.
ENGINEERED NANOSTRUCTURED THIN FILMS FOR ENHANCED SURFACE
ACOUSTIC WAVE SENSORS.
Degree: PhD, Department of Electrical and Computer
Engineering, 2013, University of Alberta
URL: https://era.library.ualberta.ca/files/7s75dd31s
► Sensor technologies profoundly impact all aspects of our everyday lives. Advances have led to smaller devices, faster response times, reduced costs, higher specificity and sensitivity,…
(more)
▼ Sensor technologies profoundly impact all aspects of
our everyday lives. Advances have led to smaller devices, faster
response times, reduced costs, higher specificity and sensitivity,
and even new sensing technologies. Surface acoustic wave (SAW)
technology, which has been around for many decades already, is an
example of a newer sensing technology that has begun to be studied
for sensing applications. Many advantages of SAW sensors have been
identified, in particular the high sensitivity, low cost and
wireless capability. However, as the technology is still in its
infancy for sensing applications, many improvements and refinements
on the platform have yet to be explored. With the arrival of
nanotechnology, many existing technologies have benefited from
integrating with the new findings that nanotechnology has brought
forth. This thesis investigates the enhancement of existing SAW
sensors using nanostructured films fabricated by a thin film
deposition process known as glancing angle deposition (GLAD). The
GLAD technique is a highly flexible and precise thin film
fabrication method that is able to create high-surface-area thin
films. This high-surface-area characteristic of these films is the
driving motivation in their utilization to enhance the performance
of SAW sensors. This thesis first demonstrates that dense,
extremely high surface area films can be deposited on SAW sensors
without adversely affecting device performance. These modified
sensors were then studied as humidity sensors to demonstrate
improved sensitivity with the addition of the GLAD films. Before
the sensors with GLAD films could be tested in a liquid
environment, ion-milling was investigated as a method of
eliminating the clustering of the individual structures typically
seen after exposure to liquids. These modified films were extended
for use on the SAW sensors to investigate liquid sensing
performance. The performance of SAW devices with clustered films
was also studied for comparison. Both types of films were shown to
increase sensitivity greatly over the reference SAW device. The
success of these results validates the ability of GLAD films to
enhance the sensitivity of not only SAW devices, but potentially
other sensing technologies as well.
Subjects/Keywords: surface acoustic wave; GLAD; nanostructured thin film; SAW sensor; glancing angle deposition
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Kwan, J. K. (2013). ENGINEERED NANOSTRUCTURED THIN FILMS FOR ENHANCED SURFACE
ACOUSTIC WAVE SENSORS. (Doctoral Dissertation). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/7s75dd31s
Chicago Manual of Style (16th Edition):
Kwan, Jonathan K. “ENGINEERED NANOSTRUCTURED THIN FILMS FOR ENHANCED SURFACE
ACOUSTIC WAVE SENSORS.” 2013. Doctoral Dissertation, University of Alberta. Accessed January 20, 2021.
https://era.library.ualberta.ca/files/7s75dd31s.
MLA Handbook (7th Edition):
Kwan, Jonathan K. “ENGINEERED NANOSTRUCTURED THIN FILMS FOR ENHANCED SURFACE
ACOUSTIC WAVE SENSORS.” 2013. Web. 20 Jan 2021.
Vancouver:
Kwan JK. ENGINEERED NANOSTRUCTURED THIN FILMS FOR ENHANCED SURFACE
ACOUSTIC WAVE SENSORS. [Internet] [Doctoral dissertation]. University of Alberta; 2013. [cited 2021 Jan 20].
Available from: https://era.library.ualberta.ca/files/7s75dd31s.
Council of Science Editors:
Kwan JK. ENGINEERED NANOSTRUCTURED THIN FILMS FOR ENHANCED SURFACE
ACOUSTIC WAVE SENSORS. [Doctoral Dissertation]. University of Alberta; 2013. Available from: https://era.library.ualberta.ca/files/7s75dd31s

University of Alberta
17.
Leontyev, Viktor A.
Electromagnetic modelling and rational design of GLAD thin
films for optical applications.
Degree: PhD, Department of Electrical and Computer
Engineering, 2013, University of Alberta
URL: https://era.library.ualberta.ca/files/05741s38g
► This thesis presents a theoretical study of columnar films, fabricated by glancing angle deposition (GLAD), as photonic bandgap structures and metamaterials with predictable dielectric and…
(more)
▼ This thesis presents a theoretical study of columnar
films, fabricated by glancing angle deposition (GLAD), as photonic
bandgap structures and metamaterials with predictable dielectric
and magnetic response. Glancing angle deposition (GLAD) employs
extremely oblique vapour incidence and computerized substrate
motion to produce nanocolumns with a variety of shapes. Columns
grow in random or periodic arrays and may be periodic in one, two,
or three dimensions. The films' optical properties were studied
using finite-difference time-domain and finite-difference
frequency-domain methods, as well as effective medium theories,
with support from experimental research. A large part of the thesis
is devoted to column arrays with subwavelength intercolumnar
distance and periodically modulated column shape. Among them,
s-shaped columns were designed as polarizers for linearly polarized
light. Simulations have shown a competitive effect from two
structural anisotropy sources, causing a band gap suppression for
one of two linear polarizations, and high polarizing ability.
Simulations were compared to the measurements with a very good
agreement in spectral response. Subwavelength column arrays were
further explored as anisotropic interference mirrors with
omnidirectional reflection bands. Index graded vertical post films
were designed, having up to four times wider reflection bands than
in the isotropic analogs. Band gap properties of 3D periodic GLAD
columns were studied on the example of square-spiral photonic
crystals. A significant influence of column cross-section was
shown, that currently prevents fabrication of square spirals with a
3D band gap in the visible range. Inverted square-spiral films have
better performance, which is further improved by material
redistribution along the spiral. Lastly, this work studies the
effective dielectric response of porous columnar films with metal
particles. Characteristic matrix formalism was combined with
finite-difference modelling to explicitly calculate their
permittivity and permeability, and to study the band gap formation
in periodic layers of porous metal. Anisotropic magnetic response
was observed in silver columns away from the plasma resonance.
Combined with a large permittivity in the infrared, this has
potential for future refractive index engineering.
Subjects/Keywords: nanostructured materials; FDTD; glancing angle deposition; birefringent thin film; photonic crystal; interference filter; electromagnetic modelling
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Leontyev, V. A. (2013). Electromagnetic modelling and rational design of GLAD thin
films for optical applications. (Doctoral Dissertation). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/05741s38g
Chicago Manual of Style (16th Edition):
Leontyev, Viktor A. “Electromagnetic modelling and rational design of GLAD thin
films for optical applications.” 2013. Doctoral Dissertation, University of Alberta. Accessed January 20, 2021.
https://era.library.ualberta.ca/files/05741s38g.
MLA Handbook (7th Edition):
Leontyev, Viktor A. “Electromagnetic modelling and rational design of GLAD thin
films for optical applications.” 2013. Web. 20 Jan 2021.
Vancouver:
Leontyev VA. Electromagnetic modelling and rational design of GLAD thin
films for optical applications. [Internet] [Doctoral dissertation]. University of Alberta; 2013. [cited 2021 Jan 20].
Available from: https://era.library.ualberta.ca/files/05741s38g.
Council of Science Editors:
Leontyev VA. Electromagnetic modelling and rational design of GLAD thin
films for optical applications. [Doctoral Dissertation]. University of Alberta; 2013. Available from: https://era.library.ualberta.ca/files/05741s38g

University of Alberta
18.
Gish, Douglas.
Morphology control and localized surface plasmon resonance
in glancing angle deposited films.
Degree: MS, Department of Electrical and Computer
Engineering, 2010, University of Alberta
URL: https://era.library.ualberta.ca/files/2801ph166
► This research investigates an extension of the glancing angle deposition (GLAD) technique and a biosensing application of films produced by GLAD. The extension to GLAD,…
(more)
▼ This research investigates an extension of the
glancing angle deposition (GLAD) technique and a biosensing
application of films produced by GLAD. The extension to GLAD,
called phi-sweep (PS), improves column isolation compared to films
grown by traditional GLAD (TG) as well as modifies the column tilt
angle, β, of the slanted columns according to tan(βPS) =
tan(βTG) cos(γ), where γ is the sweep angle. The biosensing
application makes use of localized surface plasmon resonance in
noble metal GLAD films functionalized with rabbit immunoglobulin G
(rIgG) to detect binding of anti-rabbit immunoglobulin G
(anti-rIgG) to the films' surface. The extinction peak red-shifts a
distance dependent on the concentration of anti-rIgG solution in a
manner described by the Langmuir isotherm with a saturation value,
Δλmax, of 29.4 ± 0.7 nm and a surface confined thermodynamic
binding constant, Kₐ, of (2.7 ± 0.3)×10⁶ M⁻¹.
Subjects/Keywords: thin film; phi-sweep; biosensing; localized surface plasmon resonance; glancing angle deposition
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Gish, D. (2010). Morphology control and localized surface plasmon resonance
in glancing angle deposited films. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/2801ph166
Chicago Manual of Style (16th Edition):
Gish, Douglas. “Morphology control and localized surface plasmon resonance
in glancing angle deposited films.” 2010. Masters Thesis, University of Alberta. Accessed January 20, 2021.
https://era.library.ualberta.ca/files/2801ph166.
MLA Handbook (7th Edition):
Gish, Douglas. “Morphology control and localized surface plasmon resonance
in glancing angle deposited films.” 2010. Web. 20 Jan 2021.
Vancouver:
Gish D. Morphology control and localized surface plasmon resonance
in glancing angle deposited films. [Internet] [Masters thesis]. University of Alberta; 2010. [cited 2021 Jan 20].
Available from: https://era.library.ualberta.ca/files/2801ph166.
Council of Science Editors:
Gish D. Morphology control and localized surface plasmon resonance
in glancing angle deposited films. [Masters Thesis]. University of Alberta; 2010. Available from: https://era.library.ualberta.ca/files/2801ph166

Queens University
19.
Sadeghi-Khosravieh, Saba.
Tilted Columnar Thin Film Coatings With Anisotropic Light Scattering Properties for Solar Energy Applications
.
Degree: Mechanical and Materials Engineering, 2016, Queens University
URL: http://hdl.handle.net/1974/14703
► The main goal of this thesis is to show the versatility of glancing angle deposition (GLAD) thin films in applications. This research is first focused…
(more)
▼ The main goal of this thesis is to show the versatility of glancing angle deposition
(GLAD) thin films in applications. This research is first focused on studying the
effect of select deposition variables in GLAD thin films and secondly, to demonstrate
the flexibility of GLAD films to be incorporated in two different applications: (1) as
a reflective coating in low-level concentration photovoltaic systems, and (2) as an
anode structure in dye-sensitized solar cells (DSSC).
A particular type of microstructure composed of tilted micro-columns of titanium
is fabricated by GLAD. The microstructures form elongated and fan-like tilted
micro-columns that demonstrate anisotropic scattering.
The thin films texture changes from fiber texture to tilted fiber texture by increasing
the vapor incidence angle. At very large deposition angles, biaxial texture forms.
The morphology of the thin films deposited under extreme shadowing condition
and at high temperature (below recrystallization zone) shows a porous and inclined
micro-columnar morphology, resulting from the dominance of shadowing over
adatom surface diffusion.
The anisotropic scattering behavior of the tilted Ti thin film coatings is quantified
by bidirectional reflectance distribution function (BRDF) measurements and is
found to be consistent with reflectance from the microstructure acting as an array
of inclined micro-mirrors that redirect the incident light in a non-specular reflection.
A silver-coating of the surface of the tilted-Ti micro-columns is performed to enhance the total reflectance of the Ti-thin films while keeping the anisotropic scattering
behavior. By using such coating is as a booster reflector in a laboratory-scale low-level
concentration photovoltaic system, the short-circuit current of the reference silicon
solar cell by 25%.
Finally, based on the scattering properties of the tilted microcolumnar
microstructure, its scattering effect is studied as a part of titanium dioxide
microstructure for the anode in DSSCs. GLAD-fabricated TiO2 microstructures
for the anode in a DSSC, consisting of vertical micro-columns, and combined
vertical topped with tilted micro-columns are compared. The solar cell with the
two-part microstructure shows the highest monochromatic incident photon to
current efficiency with 20% improvement compared to the vertical microstructure,
and the efficiency of the cell increases from 1.5% to 2% due to employing the
scattering layer.
Subjects/Keywords: Glancing Angle Deposition
;
Bidirectional Reflectance Distribution Function
;
Dye-Sensitized Solar Cells
;
Directional Scattering
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Sadeghi-Khosravieh, S. (2016). Tilted Columnar Thin Film Coatings With Anisotropic Light Scattering Properties for Solar Energy Applications
. (Thesis). Queens University. Retrieved from http://hdl.handle.net/1974/14703
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):
Sadeghi-Khosravieh, Saba. “Tilted Columnar Thin Film Coatings With Anisotropic Light Scattering Properties for Solar Energy Applications
.” 2016. Thesis, Queens University. Accessed January 20, 2021.
http://hdl.handle.net/1974/14703.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Sadeghi-Khosravieh, Saba. “Tilted Columnar Thin Film Coatings With Anisotropic Light Scattering Properties for Solar Energy Applications
.” 2016. Web. 20 Jan 2021.
Vancouver:
Sadeghi-Khosravieh S. Tilted Columnar Thin Film Coatings With Anisotropic Light Scattering Properties for Solar Energy Applications
. [Internet] [Thesis]. Queens University; 2016. [cited 2021 Jan 20].
Available from: http://hdl.handle.net/1974/14703.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Sadeghi-Khosravieh S. Tilted Columnar Thin Film Coatings With Anisotropic Light Scattering Properties for Solar Energy Applications
. [Thesis]. Queens University; 2016. Available from: http://hdl.handle.net/1974/14703
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Toledo
20.
Hubartt, Bradley C.
Nucleation and Growth, Defect Structure, and Dynamical
Behavior of Nanostructured Materials.
Degree: PhD, Physics, 2014, University of Toledo
URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1416828345
► In this thesis, the nucleation, growth, defect structure, and dynamical behavior of a variety of different nanoscale systems and processes, ranging from nanoparti- cle self-assembly…
(more)
▼ In this thesis, the nucleation, growth, defect
structure, and dynamical behavior of a variety of different
nanoscale systems and processes, ranging from nanoparti- cle
self-assembly to multilayer metal thin-film growth to nanocolumns,
are studied. In our simulations, a variety of different methods
have been used including rate- equations, molecular dynamics, and
analytical methods. In addition, a new compu- tational method to
use graphical processing units (GPUs) to improve the efficiency of
accelerated dynamics calculations is described.In the first
project, which was motivated by experiments on colloidal
nanoparticle (NP) island growth, the development of a
self-consistent rate-equation (RE) approach to irreversible island
growth and nucleation which takes into account cluster mobility and
coalescence is presented. As a first application, we consider the
irreversible growth of compact submonolayer islands on a
two-dimensional (2D) substrate in the presence of monomer
deposition as well as monomer and island diffusion. Our results are
compared with kinetic Monte Carlo simulations for different values
of the exponent µ describing the dependence of the island diffusion
constant on island size. We find excellent agreement between our
self-consistent RE results and simulation results for the island
and monomer densities, up to and somewhat beyond the coverage
corresponding to the peak island density. We also find good
agreement between our self-consistent RE and simulation results for
the portion of the island size distribution (ISD) corresponding to
island sizes less than the average island size S. Our self-
consistent RE approach also demonstrates that geometric effects
play a crucial role in determining the power-law behavior of the
ISD for µ = 1.We then present simulation results for the critical
island size, stability, and mor- phology of 2D colloidal Au
nanoparticle islands formed during drop-drying, which were carried
out in order to explain recent experiments. Our results were
obtained by carrying out molecular dynamics simulations and
energetics calculations using an empirical potential which takes
into account Van der Waals core-core, ligand-ligand, and
ligand-solvent interactions. Good agreement with experiment is
obtained for the dependence of the critical island size on NP
diameter. Our results for the criti- cal length-scale for smoothing
via edge diffusion are also consistent with the limited facet size
and island relaxation observed in experiments. In addition, the
relatively high rate of monomer diffusion on an island as well as
the low barrier for interlayer diffusion are consistent with
experimental observations that second-layer growth does not occur
until after the first layer is complete.In order to understand the
surface morphology and microstructure in
glancing-
angle deposition
(GLAD), we have also developed and applied a method to carry out
large-scale molecular dynamics simulations of Cu/Cu(100) growth up
to 20 mono- layers (ML) for
deposition angles ranging from 50¿ to
85¿ and for both random…
Advisors/Committee Members: Amar, Jacques (Advisor).
Subjects/Keywords: Physics; Condensed Matter Physics; nanocolumn, nanoparticle, thin-film, glancing-angle
deposition, rate-equation, molecular dynamics
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Hubartt, B. C. (2014). Nucleation and Growth, Defect Structure, and Dynamical
Behavior of Nanostructured Materials. (Doctoral Dissertation). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1416828345
Chicago Manual of Style (16th Edition):
Hubartt, Bradley C. “Nucleation and Growth, Defect Structure, and Dynamical
Behavior of Nanostructured Materials.” 2014. Doctoral Dissertation, University of Toledo. Accessed January 20, 2021.
http://rave.ohiolink.edu/etdc/view?acc_num=toledo1416828345.
MLA Handbook (7th Edition):
Hubartt, Bradley C. “Nucleation and Growth, Defect Structure, and Dynamical
Behavior of Nanostructured Materials.” 2014. Web. 20 Jan 2021.
Vancouver:
Hubartt BC. Nucleation and Growth, Defect Structure, and Dynamical
Behavior of Nanostructured Materials. [Internet] [Doctoral dissertation]. University of Toledo; 2014. [cited 2021 Jan 20].
Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1416828345.
Council of Science Editors:
Hubartt BC. Nucleation and Growth, Defect Structure, and Dynamical
Behavior of Nanostructured Materials. [Doctoral Dissertation]. University of Toledo; 2014. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1416828345

University of Alberta
21.
Smetaniuk, Daniel.
Ultraviolet stabilization and performance enhancement of
nanostructured humidity sensors.
Degree: MS, Department of Electrical and Computer
Engineering, 2011, University of Alberta
URL: https://era.library.ualberta.ca/files/nv9353669
► Glancing angle deposition (GLAD) was used to fabricate nanostructured TiO2 capacitive relative humidity (RH) sensors. These sensors exhibit sub-second response times and large sensitivities, but…
(more)
▼ Glancing angle deposition (GLAD) was used to fabricate
nanostructured TiO2 capacitive relative humidity (RH) sensors.
These sensors exhibit sub-second response times and large
sensitivities, but are susceptible to ageing. Ultraviolet (UV)
treatment of the sensors has been found to reverse ageing and
enhance sensor performance. This thesis presents research
investigating the UV stabilization and performance enhancement of
GLAD RH sensors. The UV treatment was characterized using a mercury
vapour lamp and optical filters to isolate UV wavelengths.
Treatment and long-term stabilization with UV light-emitting diodes
(LEDs) was studied and 370 nm was identified as the optimum LED
wavelength for stabilization. A custom 8-channel impedance analyzer
that was built will allow for parallel sensor testing in future
experimentation to optimize the UV treatment. The goal is to
eventually combine a capacitive sensor with UV LEDs in a
self-stabilizing sensing platform.
Subjects/Keywords: light emitting diode; glancing angle deposition; thin film; photocatalytic regeneration; humidity; nanostructured; ageing; porous sensor; ultraviolet; titanium dioxide sensor
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Smetaniuk, D. (2011). Ultraviolet stabilization and performance enhancement of
nanostructured humidity sensors. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/nv9353669
Chicago Manual of Style (16th Edition):
Smetaniuk, Daniel. “Ultraviolet stabilization and performance enhancement of
nanostructured humidity sensors.” 2011. Masters Thesis, University of Alberta. Accessed January 20, 2021.
https://era.library.ualberta.ca/files/nv9353669.
MLA Handbook (7th Edition):
Smetaniuk, Daniel. “Ultraviolet stabilization and performance enhancement of
nanostructured humidity sensors.” 2011. Web. 20 Jan 2021.
Vancouver:
Smetaniuk D. Ultraviolet stabilization and performance enhancement of
nanostructured humidity sensors. [Internet] [Masters thesis]. University of Alberta; 2011. [cited 2021 Jan 20].
Available from: https://era.library.ualberta.ca/files/nv9353669.
Council of Science Editors:
Smetaniuk D. Ultraviolet stabilization and performance enhancement of
nanostructured humidity sensors. [Masters Thesis]. University of Alberta; 2011. Available from: https://era.library.ualberta.ca/files/nv9353669

University of Georgia
22.
Larsen, George Keefe.
Scalable chiral plasmonic structures.
Degree: 2015, University of Georgia
URL: http://hdl.handle.net/10724/31455
► As chiral metamaterials become increasingly more technologically relevant, scalable yet proficient nanofabrication methods will be needed for their production. Dynamic shadowing growth (DSG) takes advantage…
(more)
▼ As chiral metamaterials become increasingly more technologically relevant, scalable yet proficient nanofabrication methods will be needed for their production. Dynamic shadowing growth (DSG) takes advantage of the shadowing effect during
physical vapor deposition and is a simple and powerful tool to produce chiral nanostructures. This dissertation describes several new DSG strategies for scalable production of chiral plasmonic thin films with significant optical activity in the visible
and near-infrared wavelength region. The helix is the prototypical chiral structure, yet fabrication of nanoscale helices is a significant technological challenge. By using metal composite (Ti/Ag) and metal/dielectric composite materials (Ag/MgF2), it is
demonstrated that nanoscale helices can be fabricated through DSG at room temperature in a scalable manner. However, these thin films have a high degree of alignment, which increases the difficulty of interpreting the optical measurements. Thus, a
generalized ellipsometry measurement scheme is introduced to extract the optical parameters from aligned films. It is found that some of these DSG helical structures are among the most optically chiral films to date. It is also shown that self-assembled
colloidal monolayers of nanospheres can serve as effective templates for the production of a wide variety of highly chiral films. Furthermore, this method can be combined with chemical techniques to dynamically tune the optical response. These chiral
films can have coatings with well-defined shapes that are analyzed using a continuous chirality measure. This measure of chirality allows for the quantification of chirality, providing insight into the origin of optical activity in these films. Finally,
DSG films are developed to serve as both surfaced enhanced Raman scattering (SERS) substrates and as molecular chirality sensors through chiral plasmonic sensing. A molecule’s “handedness” determines its function in the body, and introduction of the
wrong-handed molecule can have serious consequences. Therefore, a sensor that is sensitive to molecular chirality is highly desirable. In addition to their SERS response, the DSG films are investigated for their sensitivity to the chirality of L- and D-
enantiomers of tryptophan. Notably, the results show that the measured optical response depends on both the handedness of the film and the handedness of the molecule.
Subjects/Keywords: Dynamic shadowing growth; Glancing angle deposition; Chiral metamaterials; Plasmonics; Biosensors; Surface enhanced Raman scattering; Helix; Nanosphere lithography
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Larsen, G. K. (2015). Scalable chiral plasmonic structures. (Thesis). University of Georgia. Retrieved from http://hdl.handle.net/10724/31455
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):
Larsen, George Keefe. “Scalable chiral plasmonic structures.” 2015. Thesis, University of Georgia. Accessed January 20, 2021.
http://hdl.handle.net/10724/31455.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Larsen, George Keefe. “Scalable chiral plasmonic structures.” 2015. Web. 20 Jan 2021.
Vancouver:
Larsen GK. Scalable chiral plasmonic structures. [Internet] [Thesis]. University of Georgia; 2015. [cited 2021 Jan 20].
Available from: http://hdl.handle.net/10724/31455.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Larsen GK. Scalable chiral plasmonic structures. [Thesis]. University of Georgia; 2015. Available from: http://hdl.handle.net/10724/31455
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of South Florida
23.
Mateo Feliciano, Domingo J.
Growth and Characterization of Spatially Ordered Nanostructures of Functional Materials.
Degree: 2020, University of South Florida
URL: https://scholarcommons.usf.edu/etd/8250
► Thin films and nanostructures of functional materials like lead zirconium titanite oxide (PZT) and Zinc Oxide (ZnO) offer multitude of applications in ferroelectrics, piezoelectrics and…
(more)
▼ Thin films and nanostructures of functional materials like lead zirconium titanite oxide (PZT) and Zinc Oxide (ZnO) offer multitude of applications in ferroelectrics, piezoelectrics and piezotronics. While the properties of thin films of ZnO and PZT are well understood, methods for the fabrication of vertically-aligned and spatially ordered nanocolumns of these materials are not common. To achieve a spatially ordered arrangement of either PZT or ZnO, a Silica Nanosphere (SNS) Monolayer Template has been constructed to serve as nucleation site for the growth of a specific number of nanocolumns. The SNS monolayer template is constructed by Langmuir-Blodgett dip coating, using SNS’s of diameters ranging from 3800 nm to 160 nm. To understand the nanocolumnar growth ZnO and PZT nanostructures, these were constructed using Glancing Angle Pulsed Laser Deposition (GAPLD), a variation of Glancing Angle Deposition (GLAD) which allows for the columnar growth of materials under proper growth conditions. The structural and morphological properties of these nanostructures were characterized using SEM, EDS and XRD to determine the conditions that showed enhanced crystallinity and correct stoichiometry. To finish the work, ZnO nanostructures were constructed on a SNS monolayer. The physical and structural properties of the ZnO nanostructures on the top surface of each sphere were observed to be dependent on underlying sphere size.
Subjects/Keywords: Laser ablation; spatially ordered structures; glancing angle pulsed laser deposition; silica nanosphere monolayers; Zinc Oxide; Other Education
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Mateo Feliciano, D. J. (2020). Growth and Characterization of Spatially Ordered Nanostructures of Functional Materials. (Thesis). University of South Florida. Retrieved from https://scholarcommons.usf.edu/etd/8250
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):
Mateo Feliciano, Domingo J. “Growth and Characterization of Spatially Ordered Nanostructures of Functional Materials.” 2020. Thesis, University of South Florida. Accessed January 20, 2021.
https://scholarcommons.usf.edu/etd/8250.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Mateo Feliciano, Domingo J. “Growth and Characterization of Spatially Ordered Nanostructures of Functional Materials.” 2020. Web. 20 Jan 2021.
Vancouver:
Mateo Feliciano DJ. Growth and Characterization of Spatially Ordered Nanostructures of Functional Materials. [Internet] [Thesis]. University of South Florida; 2020. [cited 2021 Jan 20].
Available from: https://scholarcommons.usf.edu/etd/8250.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Mateo Feliciano DJ. Growth and Characterization of Spatially Ordered Nanostructures of Functional Materials. [Thesis]. University of South Florida; 2020. Available from: https://scholarcommons.usf.edu/etd/8250
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Univerzitet u Beogradu
24.
Potočnik, Jelena, 1980-.
Svojstva nanostrukturnih tankih slojeva nikla dobijenih
metodom deponovanja pri malim uglovima.
Degree: Fakultet za fizičku hemiju, 2017, Univerzitet u Beogradu
URL: https://fedorabg.bg.ac.rs/fedora/get/o:16818/bdef:Content/get
► Fizika - materijali - Fizička hemija površina / Materials physics - Physical chemistry of surfaces
Istraživanja nanostrukturnih tankih slojeva nikla su od velikog značaja zbog…
(more)
▼ Fizika - materijali - Fizička hemija površina /
Materials physics - Physical chemistry of surfaces
Istraživanja nanostrukturnih tankih slojeva nikla
su od velikog značaja zbog veoma dobrih fizičkih i hemijskih
svojstava ovog metala. Nikl je materijal koji ima veliku primjenu u
različitim oblastima nauke i tehnologije, zahvaljujući svojstvima
kao što su visoka Curie-va temperatura, niska električna otpornost,
dobra toplotna provodljivost, otpornost na koroziju,
itd...
Advisors/Committee Members: Mentus, Slavko, 1946-.
Subjects/Keywords: nanostructured thin films; nickel; glancing angle
deposition; SEM; AFM; XRD; XPS; MOKE; spectroscopic ellipsometry;
cyclic voltammetry
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APA ·
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Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Potočnik, Jelena, 1. (2017). Svojstva nanostrukturnih tankih slojeva nikla dobijenih
metodom deponovanja pri malim uglovima. (Thesis). Univerzitet u Beogradu. Retrieved from https://fedorabg.bg.ac.rs/fedora/get/o:16818/bdef:Content/get
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):
Potočnik, Jelena, 1980-. “Svojstva nanostrukturnih tankih slojeva nikla dobijenih
metodom deponovanja pri malim uglovima.” 2017. Thesis, Univerzitet u Beogradu. Accessed January 20, 2021.
https://fedorabg.bg.ac.rs/fedora/get/o:16818/bdef:Content/get.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Potočnik, Jelena, 1980-. “Svojstva nanostrukturnih tankih slojeva nikla dobijenih
metodom deponovanja pri malim uglovima.” 2017. Web. 20 Jan 2021.
Vancouver:
Potočnik, Jelena 1. Svojstva nanostrukturnih tankih slojeva nikla dobijenih
metodom deponovanja pri malim uglovima. [Internet] [Thesis]. Univerzitet u Beogradu; 2017. [cited 2021 Jan 20].
Available from: https://fedorabg.bg.ac.rs/fedora/get/o:16818/bdef:Content/get.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Potočnik, Jelena 1. Svojstva nanostrukturnih tankih slojeva nikla dobijenih
metodom deponovanja pri malim uglovima. [Thesis]. Univerzitet u Beogradu; 2017. Available from: https://fedorabg.bg.ac.rs/fedora/get/o:16818/bdef:Content/get
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Dayton
25.
McNeilly, Ryan J.
Nanostructured Microcantilever for the Detection of Volatile
Compounds.
Degree: MS(M.S.), Bioengineering, 2017, University of Dayton
URL: http://rave.ohiolink.edu/etdc/view?acc_num=dayton1511803746331593
► In this study, nanostructured, functionalized microcantilevers have been designed, fabricated, and characterized for the sensing of volatile organic compounds. Sensing devices were fabricated with either…
(more)
▼ In this study, nanostructured, functionalized
microcantilevers have been designed, fabricated, and characterized
for the sensing of volatile organic compounds. Sensing devices were
fabricated with either four or eight hammerhead-shaped cantilevers.
These cantilevers vibrate laterally in-plane making them highly
suitable for sensing in both air and liquid. Silicon oxide
nanostructure was deposited on the cantilevers to increase the
surface area and sensitivity of the devices. Molecular recognition
peptides were chemically tethered to the surfaces to create a
selective response for the analytes of interest. When the analytes
have bound to the surface of the cantilever, a shift in resonance
frequency is produced and detected by piezoresistive sensors. This
frequency shift can be used to determine the mass of analyte bound
to the surface. The cantilever sensors are expected to provide fast
and highly sensitive detection, and can be fabricated in an array
format for sensing multiple compounds in complex samples. The
nanostructured cantilever sensors show strong potential for
applications in medical, environmental, food safety, and hazardous
gas monitoring applications.
Advisors/Committee Members: Hansen, Karolyn (Advisor).
Subjects/Keywords: Biochemistry; Biomedical Engineering; Chemical Engineering; Electrical Engineering; Mechanical Engineering; biosensor; sensor; microcantilever; volatile organic compound; nanostructure; glancing angle deposition
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
McNeilly, R. J. (2017). Nanostructured Microcantilever for the Detection of Volatile
Compounds. (Masters Thesis). University of Dayton. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=dayton1511803746331593
Chicago Manual of Style (16th Edition):
McNeilly, Ryan J. “Nanostructured Microcantilever for the Detection of Volatile
Compounds.” 2017. Masters Thesis, University of Dayton. Accessed January 20, 2021.
http://rave.ohiolink.edu/etdc/view?acc_num=dayton1511803746331593.
MLA Handbook (7th Edition):
McNeilly, Ryan J. “Nanostructured Microcantilever for the Detection of Volatile
Compounds.” 2017. Web. 20 Jan 2021.
Vancouver:
McNeilly RJ. Nanostructured Microcantilever for the Detection of Volatile
Compounds. [Internet] [Masters thesis]. University of Dayton; 2017. [cited 2021 Jan 20].
Available from: http://rave.ohiolink.edu/etdc/view?acc_num=dayton1511803746331593.
Council of Science Editors:
McNeilly RJ. Nanostructured Microcantilever for the Detection of Volatile
Compounds. [Masters Thesis]. University of Dayton; 2017. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=dayton1511803746331593

University of Toledo
26.
Adhikari, Dipendra.
Optical and Microstructural Properties of Sputtered Thin
Films for Photovoltaic Applications.
Degree: PhD, Physics, 2019, University of Toledo
URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1573118517150321
► Thin film solar cells are promising candidates for generation of low cost and pollution-free energy. The materials used in these devices, mainly the active absorber…
(more)
▼ Thin film solar cells are promising candidates for
generation of low cost and pollution-free energy. The materials
used in these devices, mainly the active absorber layer, can be
deposited in a variety of industry-friendly ways, so that the cost
associated with manufacturing is generally lower than for competing
technologies such as crystalline silicon. This dissertation will
focus on the fabrication and characterization of nanocrystalline
hydrogenated silicon (nc-Si:H) and polycrystalline cadmium
telluride (CdTe) thin films by industrially scalable, non-toxic,
and comparatively simple magnetron sputtering. The performance of
the solar cells incorporating these films as an active absorber
layers are discussed. In this work, spectroscopic ellipsometry is
used as the primary tool for the characterization of optical and
structural properties of thin films and bulk material. As a first
case study, the anisotropic optical properties of single crystal
strontium lanthanum aluminum oxide
(SrLaAlO
4) in the form of birefringence and
dichroism is obtained from Mueller matrix ellipsometry.
SrLaAlO
4 exhibit uniaxial anisotropic
optical properties and the indirect optical band gap of 2.74 eV. A
parametric model consisting of parabolic band critical points (CPs)
for electronic transitions and a gap function is used to describe
the complex dielectric function spectra in both the ordinary and
extra-ordinary directions. The modeling in this case study has
applications to both nc-Si:H, an indirect band gap semiconductor,
and CdTe which may exhibit microstructural anisotropy depending
upon the
deposition method.Fabrication and characterization of
hydrogenated silicon (Si:H) thin films produced by reactive
magnetron sputtering is the second case in this study. RTSE and a
virtual interface analysis (VIA) are used to track the growth
evolution of sputtered Si:H. From these studies, growth evolution
diagrams depicting the nucleation of nanocrystallites from the
amorphous phase and nanocrystallite coalescence are developed.
Silicon-hydrogen bonding configurations are determined from
absorption features extracted from infrared spectroscopic
ellipsometry. Ultimately, this work provides a summary of how
nanostructure can be manipulated in reactive magnetron sputtered
Si:H films, which is necessary for implementation of these
materials in photovoltaic (PV) devices.Here we have demonstrated
working PV devices produced with RF magnetron sputtered nc-Si:H
absorber layers and compare overall device performances to those
produced with the more conventional plasma enhanced chemical vapor
deposition (PECVD) absorbers. Different absorber layer
deposition
techniques and atmospheric exposure effects are studied to explain
variations in the performance of single junction n-i-p substrate
configuration nc-Si:H based solar cells. The cells with
nanocrystalline PECVD absorbers and an untextured (planar) back
reflector serve as a baseline for comparison with power conversion
efficiency near 6%. This efficiency is typical of this device…
Advisors/Committee Members: Podraza, Nikolas (Committee Chair).
Subjects/Keywords: Energy; Optics; Physics; Materials Science; Ellipsometry; Optical Anisotropy; Glancing Angle Deposition; Hydrogenated Silicon; Sputtering; CdTe; Solar Cell; Mueller Matrix
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Adhikari, D. (2019). Optical and Microstructural Properties of Sputtered Thin
Films for Photovoltaic Applications. (Doctoral Dissertation). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1573118517150321
Chicago Manual of Style (16th Edition):
Adhikari, Dipendra. “Optical and Microstructural Properties of Sputtered Thin
Films for Photovoltaic Applications.” 2019. Doctoral Dissertation, University of Toledo. Accessed January 20, 2021.
http://rave.ohiolink.edu/etdc/view?acc_num=toledo1573118517150321.
MLA Handbook (7th Edition):
Adhikari, Dipendra. “Optical and Microstructural Properties of Sputtered Thin
Films for Photovoltaic Applications.” 2019. Web. 20 Jan 2021.
Vancouver:
Adhikari D. Optical and Microstructural Properties of Sputtered Thin
Films for Photovoltaic Applications. [Internet] [Doctoral dissertation]. University of Toledo; 2019. [cited 2021 Jan 20].
Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1573118517150321.
Council of Science Editors:
Adhikari D. Optical and Microstructural Properties of Sputtered Thin
Films for Photovoltaic Applications. [Doctoral Dissertation]. University of Toledo; 2019. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1573118517150321

University of Georgia
27.
Smith, Wilson.
Novel photocatalyst oxide nanostructures engineered by oblique angle and glancing angle deposition.
Degree: 2014, University of Georgia
URL: http://hdl.handle.net/10724/26495
► This thesis reports on fundamental aspects of TiO2 photocatalysis for water purification and water splitting to create hydrogen as an alternative fuel source. Although TiO2…
(more)
▼ This thesis reports on fundamental aspects of TiO2 photocatalysis for water purification and water splitting to create hydrogen as an alternative fuel source. Although TiO2 becomes active only under UV illumination, when coupled with WO3 the
photoactivation can be shifted to the visible region, and photocatalytic performance can be increased due to a charge-separation effect. Our approach has been unique in creating single-layer (TiO2) and two-layer (TiO2/WO3) nanostructures that are uniform
and easily reproducible utilizing oblique angle deposition (OAD) and glancing angle deposition (GLAD). An experimental relationship was developed between TiO2 surface area and its photocatalytic performance by using OAD to fabricate uniform arrays of
TiO2 nanorods with varying nanorod length. The experimental results showed a direct correlation between the surface area and photodecay rate, and a theoretical first-order reaction model was developed that agreed well with our results. Using consecutive
OAD and GLAD depositions, a series of two layer TiO2/WO3 nanostructures were fabricated and their photocatalytic performance was measured. The performance of the two-layer nanostructures was found to depend on the photocatalyst surface area, the relative
crystal structure of each material, and the interfacial area between the TiO2 and WO3 layers. The interfacial area between TiO2 and WO3 can be maximized by utilizing a modified GLAD technique to create core-shell nanorods, which has shown significant
photocatalytic enhancement under UV and visible irradiation. TiO2 is also used in photoelectrochemical cells (PECs) to photo-dissociate water for hydrogen production. TiO2 nanorods have been fabricated by OAD and shown the ability to split water at an
applied overpotential of 1.0 V, with photoresponse beginning at λ = 400 nm. In addition, TiO2/WO3 core-shell nanorods are utilized in this PEC system and have the ability to dissociate water and create photocurrent with no applied overpotential, and
shown a photoresponse out to λ = 600 nm. In summary, TiO2 and WO3 nanostructures fabricated by OAD and GLAD have shown promising results for effective water photo-dissociation and photocatalytic reactions. The unique properties of these nanostructures
have great potential for further improvement.
Subjects/Keywords: oblique angle deposition; glancing angle deposition; dynamic shadowing growth; nanorod; photocatalyst; electron-hole pair; water photo-dissociation; electronic band structure; photodegradation; core-shell
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Smith, W. (2014). Novel photocatalyst oxide nanostructures engineered by oblique angle and glancing angle deposition. (Thesis). University of Georgia. Retrieved from http://hdl.handle.net/10724/26495
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):
Smith, Wilson. “Novel photocatalyst oxide nanostructures engineered by oblique angle and glancing angle deposition.” 2014. Thesis, University of Georgia. Accessed January 20, 2021.
http://hdl.handle.net/10724/26495.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Smith, Wilson. “Novel photocatalyst oxide nanostructures engineered by oblique angle and glancing angle deposition.” 2014. Web. 20 Jan 2021.
Vancouver:
Smith W. Novel photocatalyst oxide nanostructures engineered by oblique angle and glancing angle deposition. [Internet] [Thesis]. University of Georgia; 2014. [cited 2021 Jan 20].
Available from: http://hdl.handle.net/10724/26495.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Smith W. Novel photocatalyst oxide nanostructures engineered by oblique angle and glancing angle deposition. [Thesis]. University of Georgia; 2014. Available from: http://hdl.handle.net/10724/26495
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Georgia
28.
Fu, Junxue.
Optical sensors for bacteria detection based on nanostructures fabricated by dynamic shadowing growth.
Degree: 2014, University of Georgia
URL: http://hdl.handle.net/10724/25801
► Several optical sensors based on nanostructures for Salmonella detection have been developed by taking the advantage of the dynamic shadowing growth (DSG). Based on fluorescence…
(more)
▼ Several optical sensors based on nanostructures for Salmonella detection have been developed by taking the advantage of the dynamic shadowing growth (DSG). Based on fluorescence detection principle and the advantage of high surface area of
nanorods, heterostructured silicon/gold nanorod array fabricated by DSG was functionalized with anti-Salmonella antibodies and organic dye molecules, which produced an enhanced fluorescence upon capture and detection of Salmonella. To reduce the multiple
functionalization steps, a simpler detection technique is explored on the basis of the localized surface plasmon resonance (LSPR) properties of Ag and Au nanoparticles (NPs). By using DSG technique, one can produce uniform Ag or Au NPs substrate with
fine tunable LSPR wavelength. The sensor ability of Ag nanoparticles was demonstrated by detecting 10-10 M NeutrAvidin. Due to the better stability in aqueous solutions, Au nanoparticles were used as a LSPR sensor for the whole cell detection of
Salmonella. The results showed a plasmon peak shift due to the Salmonella antigen and anti-Salmonella antibody binding. However, this shift was not sensitive to the concentration of the bacteria, which is due to the rigid structure of the bacteria. A
theoretical model based on Mie theory and Effective Medium theory has been proposed for this detection. A more conventional method for bacteria detection is surface plasmon resonance (SPR) sensor. Ag nanorod mediated SPR sensor for sensitivity
enhancement was first investigated using four-layer Fresnel equations and effective medium theory. Compared to the conventional thin metal film SPR configuration, the nanorod mediated SPR sensor presented a larger resonance angle shift and the
sensitivity increased with increasing refractive index of the target analyte. The experimental results of Ag film and Ag nanorods/film fabricated by DSG in air and distilled water were analyzed by the theoretical results. In summary, the optical sensors,
such as fluorescence immunosensor, LSPR sensor and SPR sensor, based on nanorods or NPs fabricated by DSG technique have shown promising results for bio-molecules and bacteria detection. Also, the unique properties of the nanostructures have great
potential for further improvement.
Subjects/Keywords: dynamic shadowing growth; glancing angle deposition; oblique angle deposition; nanorod; nanoparticle; fluorescence; localized surface plasmon resonance; surface plasmon resonance; sensor; Salmonella detection
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Fu, J. (2014). Optical sensors for bacteria detection based on nanostructures fabricated by dynamic shadowing growth. (Thesis). University of Georgia. Retrieved from http://hdl.handle.net/10724/25801
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):
Fu, Junxue. “Optical sensors for bacteria detection based on nanostructures fabricated by dynamic shadowing growth.” 2014. Thesis, University of Georgia. Accessed January 20, 2021.
http://hdl.handle.net/10724/25801.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Fu, Junxue. “Optical sensors for bacteria detection based on nanostructures fabricated by dynamic shadowing growth.” 2014. Web. 20 Jan 2021.
Vancouver:
Fu J. Optical sensors for bacteria detection based on nanostructures fabricated by dynamic shadowing growth. [Internet] [Thesis]. University of Georgia; 2014. [cited 2021 Jan 20].
Available from: http://hdl.handle.net/10724/25801.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Fu J. Optical sensors for bacteria detection based on nanostructures fabricated by dynamic shadowing growth. [Thesis]. University of Georgia; 2014. Available from: http://hdl.handle.net/10724/25801
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Alberta
29.
Kupsta, Martin.
Advanced methods for GLAD thin films.
Degree: MS, Department of Electrical and Computer
Engineering, 2010, University of Alberta
URL: https://era.library.ualberta.ca/files/ch128nd76s
► Thin films are produced from layers of materials ranging from nanometres to micrometres in height. They are increasingly common and are being used in integrated…
(more)
▼ Thin films are produced from layers of materials
ranging from nanometres to micrometres in height. They are
increasingly common and are being used in integrated circuit
design, optical coatings, protective coatings, and environmental
sensing. Thin films can be fabricated using a variety of methods
involving chemical reactions or physical transport of matter.
Glancing angle deposition (GLAD) thin films are produced using
physical vapour deposition techniques under high vacuum conditions
where exploitation of the geometric conditions between the source
and the substrate causes enhanced atomic self shadowing to produce
structured thin films. This work deals with the modification of
these films, \emph{in situ} by altering growing conditions through
substrate temperatures control, or post-deposition through reactive
ion etching (RIE). The first part of the thesis deals with the
modification of TiO2 GLAD humidity sensors using RIE with
CF4. The data presented demonstrates improved response times to
step changes in humidity. Characterization revealed response times
of better then 50~ms (instrument-limited measurement). An etch
recipe for complete removal of TiO2 was also demonstrated with
shadow masking to transfer patterns into GLAD films. The subsequent
chapter focuses on modification of thin film growth conditions by
increasing adatom mobility. A radiative heating system was designed
and implemented with the ability to achieve chuck temperatures of
400^∘C. Capping layers on top of GLAD films were grown to
demonstrate effects of \emph{in situ} heating, and a quantitative
analysis of crack reduction with increased temperatures is
presented. Lithographic pattern transfer onto a capped GLAD film
was demonstrated. Opposite to the goal of the preceding chapter,
the focus of the final experimental chapter was to limit adatom
mobility. A LN2-based cooling system was designed and
implemented for the purpose of studying the growth by GLAD of lower
melting point materials, which under regular growth conditions do
not form well-defined structures. Chuck temperatures of
-60^∘C can be achieved during deposition while still
allowing substrate rotation. The growth of helical copper films was
used to demonstrate the effects of \emph{in situ} substrate
cooling.
Subjects/Keywords: substrate cooling; nanotechnology; microelectrical mechanical systems (MEMS); substrate heating; thin films; glancing angle deposition (GLAD); humidity sensing; reactive ion etching (RIE); physical vapour deposition (PVD); adatom mobility; titanium dioxide (TiO2)
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Kupsta, M. (2010). Advanced methods for GLAD thin films. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/ch128nd76s
Chicago Manual of Style (16th Edition):
Kupsta, Martin. “Advanced methods for GLAD thin films.” 2010. Masters Thesis, University of Alberta. Accessed January 20, 2021.
https://era.library.ualberta.ca/files/ch128nd76s.
MLA Handbook (7th Edition):
Kupsta, Martin. “Advanced methods for GLAD thin films.” 2010. Web. 20 Jan 2021.
Vancouver:
Kupsta M. Advanced methods for GLAD thin films. [Internet] [Masters thesis]. University of Alberta; 2010. [cited 2021 Jan 20].
Available from: https://era.library.ualberta.ca/files/ch128nd76s.
Council of Science Editors:
Kupsta M. Advanced methods for GLAD thin films. [Masters Thesis]. University of Alberta; 2010. Available from: https://era.library.ualberta.ca/files/ch128nd76s

University of Texas – Austin
30.
Flaherty, David William, 1980-.
Methods for modifying the physical and catalytic properties of surfaces.
Degree: PhD, Chemical Engineering, 2010, University of Texas – Austin
URL: http://hdl.handle.net/2152/ETD-UT-2010-05-1044
► Catalysts can be significantly improved by modifying their structure or composition. Simple adaptations of the physical structure of a catalyst can give rise to changes…
(more)
▼ Catalysts can be significantly improved by modifying their structure or composition. Simple adaptations of the physical structure of a catalyst can give rise to changes in the chemical behavior, in part, due to alterations in the coordination of active sites. Modifications in the surface or bulk composition of a material have a profound impact on the chemistry that is promoted as a result of electronic and physical factors. Optimizing these qualities may enhance the catalyst’s activity, selectivity or stability. In this dissertation, we explore the application of two distinct approaches for modifying the chemical properties of catalytically active materials. Through the use of a broad array of techniques we quantify changes in critical properties such as physical-crystallographic structure; morphology, surface area and porosity; as well as catalytic activity, selectivity and stability.
First, reactive ballistic
deposition of metal atoms within a low pressure gas provides a unique opportunity for synthesizing thin films of a wide variety of materials. The morphology, structure, and porosity of the resulting material can be tailored through control of the
deposition angle and substrate temperature. By conducting
deposition perpendicular to the surface, a film can be grown with a dense, conformal structure. On the other hand,
deposition at oblique angles results in high surface area, porous films comprised of regular arrays of nanocolumnar structures. Furthermore, variations in the
deposition angle allow for the inclusion of under-coordinated sites which change the chemical activity of the surface. Improvements in the activity, selectivity and stability of transition metal catalysts can be made by alloying the catalyst with a second element. The formation of molybdenum carbide decreases the strength of chemisorption on the surface, with respect to molybdenum, and improves selectivity for the dehydrogenation of formic acid. Platinum is active for the water-gas shift reaction. However, this catalyst cannot operate at low temperatures due to CO poisoning and is susceptible to deactivation due to accumulation of carbonaceous deposits. The formation of a platinum-copper near-surface alloy dramatically modifies the interactions of the surface with CO, H₂O and H₂ which can enhance the performance of this catalyst for the water-gas shift reaction.
Advisors/Committee Members: Mullins, C. B. (advisor), Henkelman, Graeme (committee member), Hwang, Gyeong S. (committee member), Korgel, Brian A. (committee member), Sitz, Greg O. (committee member).
Subjects/Keywords: Catalysis; Surface science; Physical vapor deposition; Glancing angle deposition; Alloy; Platinum; Carbide; Copper
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Flaherty, David William, 1. (2010). Methods for modifying the physical and catalytic properties of surfaces. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/ETD-UT-2010-05-1044
Chicago Manual of Style (16th Edition):
Flaherty, David William, 1980-. “Methods for modifying the physical and catalytic properties of surfaces.” 2010. Doctoral Dissertation, University of Texas – Austin. Accessed January 20, 2021.
http://hdl.handle.net/2152/ETD-UT-2010-05-1044.
MLA Handbook (7th Edition):
Flaherty, David William, 1980-. “Methods for modifying the physical and catalytic properties of surfaces.” 2010. Web. 20 Jan 2021.
Vancouver:
Flaherty, David William 1. Methods for modifying the physical and catalytic properties of surfaces. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2010. [cited 2021 Jan 20].
Available from: http://hdl.handle.net/2152/ETD-UT-2010-05-1044.
Council of Science Editors:
Flaherty, David William 1. Methods for modifying the physical and catalytic properties of surfaces. [Doctoral Dissertation]. University of Texas – Austin; 2010. Available from: http://hdl.handle.net/2152/ETD-UT-2010-05-1044
◁ [1] [2] ▶
.