subject:( Sensors)

Arizona State University

1. Nichols, Kevin William. Sensor Development for Physiological and Environmental Monitoring.

Degree: Engineering, 2018, Arizona State University

URL: http://repository.asu.edu/items/49178

► The sensor industry is a growing industry that has been predicted by Allied Market Research to be a multi-billion industry by 2022. One of the… (more)

Subjects/Keywords: Engineering; Sensors

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APA (6^th Edition):

Nichols, K. W. (2018). Sensor Development for Physiological and Environmental Monitoring. (Masters Thesis). Arizona State University. Retrieved from http://repository.asu.edu/items/49178

Chicago Manual of Style (16^th Edition):

Nichols, Kevin William. “Sensor Development for Physiological and Environmental Monitoring.” 2018. Masters Thesis, Arizona State University. Accessed January 26, 2021. http://repository.asu.edu/items/49178.

MLA Handbook (7^th Edition):

Nichols, Kevin William. “Sensor Development for Physiological and Environmental Monitoring.” 2018. Web. 26 Jan 2021.

Vancouver:

Nichols KW. Sensor Development for Physiological and Environmental Monitoring. [Internet] [Masters thesis]. Arizona State University; 2018. [cited 2021 Jan 26]. Available from: http://repository.asu.edu/items/49178.

Council of Science Editors:

Nichols KW. Sensor Development for Physiological and Environmental Monitoring. [Masters Thesis]. Arizona State University; 2018. Available from: http://repository.asu.edu/items/49178

University of Illinois – Urbana-Champaign

2. Askim, Jon Robert. Portable colorimetric sensor array technology.

Degree: PhD, Chemistry, 2015, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/88196

► Humans as a species are generally audio-visual creatures and do not take full advantage of the olfactory sense. Nonetheless, even humans can recognize and differentiate… (more)

▼ Humans as a species are generally audio-visual creatures and do not take full advantage of the olfactory sense. Nonetheless, even humans can recognize and differentiate among thousands of different odorants under challenging conditions. Molecular recognition by the olfactory system derives its specifity from a complex pattern of responses generated by cross-reactive olfactory receptors. These receptors are encoded by approximately one thousand genes, which represents roughly 3% of the entire human genome. As a concept, the use of multiple cross-reactive chemical sensors is broadly applicable to any situation in which the sensors can be simultaneously exposed to each of a set of multiple target analytes; such an "artificial nose" has significant potential in all areas of chemical sensor technology. The chemical sensor arrays discussed in this work are based upon cross-reactive colorimetric response: each of many sensor elements in an array is a mixture of dyes or other compounds that changes color upon exposure to an analyte. These arrays typically use strong, poorly-reversible chemical reactions involving a diverse set of color-changing dyes or chromogens; such colorimetric sensor arrays have evolved to be fast, sensitive, portable, and inexpensive. Importantly, the analyte scope of the developed arrays has been shown to be capable of tailoring based on their intended applications, and can be made to be either broad or narrow as desired: in previous works, they have proven to be capable of discriminating among a broad range of analytes including both gaseous and aqueous analytes involving many different types of chemical reactivity, including Lewis and Brønsted acidity/basicity, molecular polarity, redox properties, and chelation. Of particular interest is the study of chemicals which are hazardous to human life, by either directly interacting with the human body or indirectly causing a physical effect. This work discusses development of colorimetric sensor arrays for two such cases: aqueous toxins and explosives materials. Both types of analytes are particularly challenging due to their relative lack of chemical reactivity: aqueous toxins derive their toxicity from interaction with specific proteins within the human body, while explosives have high potential energy but are kinetically inert. Targeting these analytes while still maintaining high sensitivity, low noise, and the ability to discriminate among them was the primary focus of these two projects. Further, inexpensive portable technology for the quantitative analysis of these arrays is vitally necessary for their intended use outside of the laboratory. This work discusses development of an automated, truly portable device that fits into a pocket and improves upon previous instrumentation in scan speed, sensitivity, and noise. Since colorimetric sensor arrays are monitored by optical transduction, development of portable scanners involves investigating inexpensive, compact, low-noise optical imagers. Previous works focused on flatbed scanners, which have since… Advisors/Committee Members: Suslick, Kenneth S. (advisor), Kenneth S. Suslick (Committee Chair), Bailey, Ryan C. (committee member), Gewirth, Andrew A. (committee member), Girolami, Gregory S. (committee member).

Subjects/Keywords: sensors; colorimetry

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APA (6^th Edition):

Askim, J. R. (2015). Portable colorimetric sensor array technology. (Doctoral Dissertation). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/88196

Chicago Manual of Style (16^th Edition):

Askim, Jon Robert. “Portable colorimetric sensor array technology.” 2015. Doctoral Dissertation, University of Illinois – Urbana-Champaign. Accessed January 26, 2021. http://hdl.handle.net/2142/88196.

MLA Handbook (7^th Edition):

Askim, Jon Robert. “Portable colorimetric sensor array technology.” 2015. Web. 26 Jan 2021.

Vancouver:

Askim JR. Portable colorimetric sensor array technology. [Internet] [Doctoral dissertation]. University of Illinois – Urbana-Champaign; 2015. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/2142/88196.

Council of Science Editors:

Askim JR. Portable colorimetric sensor array technology. [Doctoral Dissertation]. University of Illinois – Urbana-Champaign; 2015. Available from: http://hdl.handle.net/2142/88196

University of Hawaii – Manoa

3. Song, Chenyan. System-on-chip based doppler radar occupancy sensor with add-on passive node.

Degree: 2015, University of Hawaii – Manoa

URL: http://hdl.handle.net/10125/101143

►

Ph.D. University of Hawaii at Manoa 2014.

Occupancy sensors can save up to 80% of energy used for lighting and heating ventilation and air conditioning… (more)

▼

Ph.D. University of Hawaii at Manoa 2014.

Occupancy sensors can save up to 80% of energy used for lighting and heating ventilation and air conditioning (HVAC) systems, resulting in huge financial savings. However, currently available occupancy sensors – most commonly passive infrared (PIR) and ultra-sonic (US) sensors – have significant drawbacks, including high rates of false-positives and failures to detect stationary persons. Newly availably high-efficiency Doppler radar transceivers can be used to discern human cardiopulmonary motion thus providing a practical solution for such problems in occupancy sensing. In addition, the advent of the integrated low-power microprocessor/RF-transceivers provides a new platform which combines sensing, processing and communication to form the core of a wireless smart sensor network (WSSN) for applications such as "smart buildings". A significant challenge for wide adoption of occupancy sensors is to demonstrate reliable system performance at low power with low cost. This research demonstrates the feasibility of low cost, low power Doppler radar occupancy sensor by building a customized passive sensor node into commercially available SoC's (TI's CC2530 and CC430). Experiments using periodic moving mechanical target illustrate that these SoC based Doppler radar sensors are able to accurately detect the motion of the target under continuous wave (CW), modulated CW and packet operation modes. The study on sensitivity and power consumption under these modes indicates the most cost efficiency and power efficiency can be achieved by operating the sensor under packet mode with an optimum output power level. A comparison between passive sensor node and quadrature receiver shows sensor node does not sacrifice the sensitivity by using simpler and lower-costing configuration. Null-point sensitivity study shows that though the configuration with add-on passive sensor node suffers from the decreased sensitivity, the specific pattern at this point can be used for a decision on occupancy detection. Simulation and experiment demonstrate characteristic pattern of the respiration signal detected by the Doppler radar occupancy sensor by charting how the variation of target position impacts the strength of the real motion frequency and its second harmonic. An algorithm detects the true presence occupancy is developed based on this pattern analysis, and is evaluated to be effective with human testing. This research also includes a broad-band mixer design for the add-on passive node using 0.18-μm IBM7HP CMOS process. The broad-band performance of this mixer is presented. Future work will include single channel Doppler radar measuring the displacement of target in periodic motion by making use of the relationship between the detected characteristic pattern and the target location , and harvesting ambient RF energy by the same passive sensor node configured in this dissertation.

Subjects/Keywords: occupancy sensors

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APA (6^th Edition):

Song, C. (2015). System-on-chip based doppler radar occupancy sensor with add-on passive node. (Thesis). University of Hawaii – Manoa. Retrieved from http://hdl.handle.net/10125/101143

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Song, Chenyan. “System-on-chip based doppler radar occupancy sensor with add-on passive node.” 2015. Thesis, University of Hawaii – Manoa. Accessed January 26, 2021. http://hdl.handle.net/10125/101143.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Song, Chenyan. “System-on-chip based doppler radar occupancy sensor with add-on passive node.” 2015. Web. 26 Jan 2021.

Vancouver:

Song C. System-on-chip based doppler radar occupancy sensor with add-on passive node. [Internet] [Thesis]. University of Hawaii – Manoa; 2015. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/10125/101143.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Song C. System-on-chip based doppler radar occupancy sensor with add-on passive node. [Thesis]. University of Hawaii – Manoa; 2015. Available from: http://hdl.handle.net/10125/101143

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Indian Institute of Science

4. Singh, Jaspreet. Design, Development and Performance Analysis of Micromachined Sensors for Pressure and Flow Measurement.

Degree: PhD, Faculty of Engineering, 2018, Indian Institute of Science

URL: http://etd.iisc.ac.in/handle/2005/3132

► Now-a-days sensors are not limited only to industry or research laboratories but have come to common man’s usage. From kids toys to house hold equipment… (more)

▼ Now-a-days sensors are not limited only to industry or research laboratories but have come to common man’s usage. From kids toys to house hold equipment like washing machine, microwave oven as well as in automobiles, a wide variety of sensors and actuators can be easily seen. The aim of the present thesis work is to discuss the design, development, fabrication and testing of miniaturized piezoresistive, absolute type, low pressure sensor and flow sensor. Detailed performance study of these sensors in different ambient conditions (including harsh environment such as radiation, temperature etc.) has been reported. Extensive study on designing of thin silicon diaphragms and optimization of piezoresistor parameters is presented. Various experiments have been performed to optimize the fabrication and packaging processes. In the present work, two low range absolute type pressure sensors (0-0.5 bar and 0-1 bar) and a novel flow sensor (0-0.1 L min-1) for gas flow rate measurement are developed. The thesis is divided into following six chapters. Chapter 1: It gives a general introduction about miniaturization, MEMS technology and its applications in sensors area. A brief overview of different micromachining techniques is presented, giving their relative advantages and limitations. Literature survey of various types of MEMS based pressure sensors along with recent developments is presented. At the end, the motivation for the present work and organization of the thesis is discussed. Chapter 2: In this chapter, various design aspects of low, absolute type pressure sensors (0-0.5 bar and 0-1 bar) are discussed in detail. Static analysis of the silicon diaphragms has been carried out both analytically as well as through finite element simulations. Piezoresistive analysis is carried out to optimize the piezoresistor dimensions and locations for maximum sensitivity and minimum nonlinearity. All the Finite Element Analyses (FEA) were carried out using Coventorware software. A novel approach for the selection of resistor parameters (sheet resistance, length to width ratio) is reported . Finally, the expected performance of the designed sensors is summarized. Chapter 3: This chapter is divided into two parts. The first part presents the fabrication process flow adopted to develop these low range absolute pressure sensors. Two fabrication process approaches (wet etching and dry etching) which are used to fabricate the thin diaphragms are discussed in detail. Following an overall description, various aspects of the fabrication are elaborated on, like mask design, photolithography process, ion-implantation, bulk micromachining and wafer bonding. The required parameters for implantation doses, annealing cycles, low stress nitride deposition and anodic bonding are optimized through extensive experimental trials. The second part of this chapter discusses about the different levels of packaging involved in the realization of pressure sensors. Finite Element Analyses (FEA) of Level -0 and Level-1 packages has been carried out using… Advisors/Committee Members: Rajanna, K (advisor).

Subjects/Keywords: Micromachined Pressure Sensors; Micromachined Flow Sensors; Microelectromechanical Sensors; MEMS Pressure Sensors; Micromachining; Piezoresistivity; Piezoresistive Pressure Sensors; Semiconductor Sensors; Micromachined Sensors; Pressure Sensors; Flow Sensors; MEMS Sensor; Silicon Pressure Sensors; Instrumentation

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APA (6^th Edition):

Singh, J. (2018). Design, Development and Performance Analysis of Micromachined Sensors for Pressure and Flow Measurement. (Doctoral Dissertation). Indian Institute of Science. Retrieved from http://etd.iisc.ac.in/handle/2005/3132

Chicago Manual of Style (16^th Edition):

Singh, Jaspreet. “Design, Development and Performance Analysis of Micromachined Sensors for Pressure and Flow Measurement.” 2018. Doctoral Dissertation, Indian Institute of Science. Accessed January 26, 2021. http://etd.iisc.ac.in/handle/2005/3132.

MLA Handbook (7^th Edition):

Singh, Jaspreet. “Design, Development and Performance Analysis of Micromachined Sensors for Pressure and Flow Measurement.” 2018. Web. 26 Jan 2021.

Vancouver:

Singh J. Design, Development and Performance Analysis of Micromachined Sensors for Pressure and Flow Measurement. [Internet] [Doctoral dissertation]. Indian Institute of Science; 2018. [cited 2021 Jan 26]. Available from: http://etd.iisc.ac.in/handle/2005/3132.

Council of Science Editors:

Singh J. Design, Development and Performance Analysis of Micromachined Sensors for Pressure and Flow Measurement. [Doctoral Dissertation]. Indian Institute of Science; 2018. Available from: http://etd.iisc.ac.in/handle/2005/3132

Universidade do Minho

5. Pires, Pedro José da Silva. Sistema de leitura de sensores de temperatura obtidos através de tecnologia de impressão .

Degree: 2015, Universidade do Minho

URL: http://hdl.handle.net/1822/54200

► Na última década notou-se uma evolução significativa da tecnologia a nível da sensorização, relacionado com o surgimento de novos materiais e técnicas de produção de… (more)

▼ Na última década notou-se uma evolução significativa da tecnologia a nível da sensorização, relacionado com o surgimento de novos materiais e técnicas de produção de sensores, aumento da sua precisão, diminuição das suas dimensões e redução dos custos de fabrico. Este avanço fez com que os sensores passassem a ser um elemento do dia-a-dia, não só em sistemas estáticos mas também em dispositivos móveis e de baixos níveis de consumo energético. Nesta dissertação é desenvolvida uma matriz de sensores térmicos para ser aplicada numa prótese transfemural, com o objetivo de medir o perfil térmico no contato prótese/corpo humano. Para que possa cumprir este fim, os sensores terão de apresentar elevada flexíbilidade, deixando logo assim de parte sensores rígidos ou mesmo os produzidos em silício com substratos em filmes finos, visto que, estes apesar de flexíveis, acabariam por se deteriorar com o constante movimento. Desta forma os sensores escolhidos são de base polimérica e aplicados através de tecnologias de impressão, devido ao seu baixo custo, elevada flexibilidade e fácil produção. É também desenvolvido todo o sistema eletrónico, de reduzidas dimensões, responsável pela aquisição de dados da matriz de sensores. Este sistema será adaptável a vários tipos de sensores resistivos e tem como função realizar os processos de multiplexagem dos sensores, filtragem e amplificação do sinal, processamento de dados e envio destes através de comunicação serial. Posteriormente, foi desenvolvido um software de computador que garante a aquisição dos dados enviados pelo sistema de leitura, permite a visualização em tempo real dos seus valores e imprime um gráfico com as curvas de valores de cada um dos sensores. Por fim, o sistema foi sujeito a testes, com diferentes sensores e cargas resistivas, mostrando os resultados obtidos a utilidade e bom funcionamento do sistema. Advisors/Committee Members: Rocha, J. G (advisor), Lanceros-Méndez, S (advisor), Correia, Vítor Manuel Gomes (advisor).

Subjects/Keywords: Sensor acquisition; Thermal sensors; Flexible sensors; Matrix

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APA (6^th Edition):

Pires, P. J. d. S. (2015). Sistema de leitura de sensores de temperatura obtidos através de tecnologia de impressão . (Masters Thesis). Universidade do Minho. Retrieved from http://hdl.handle.net/1822/54200

Chicago Manual of Style (16^th Edition):

Pires, Pedro José da Silva. “Sistema de leitura de sensores de temperatura obtidos através de tecnologia de impressão .” 2015. Masters Thesis, Universidade do Minho. Accessed January 26, 2021. http://hdl.handle.net/1822/54200.

MLA Handbook (7^th Edition):

Pires, Pedro José da Silva. “Sistema de leitura de sensores de temperatura obtidos através de tecnologia de impressão .” 2015. Web. 26 Jan 2021.

Vancouver:

Pires PJdS. Sistema de leitura de sensores de temperatura obtidos através de tecnologia de impressão . [Internet] [Masters thesis]. Universidade do Minho; 2015. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/1822/54200.

Council of Science Editors:

Pires PJdS. Sistema de leitura de sensores de temperatura obtidos através de tecnologia de impressão . [Masters Thesis]. Universidade do Minho; 2015. Available from: http://hdl.handle.net/1822/54200

Louisiana State University

6. Imsick, Brian Gerard. Fluorescent Materials for Chemical Sensing.

Degree: PhD, Chemistry, 2013, Louisiana State University

URL: etd-06172013-105703 ; https://digitalcommons.lsu.edu/gradschool_dissertations/228

► Materials incorporating fluorescent π-electron conjugated molecular species for sensing and imaging are advantageous over other detection or identification methods such as colorimetric reporters. Fluorescent materials… (more)

▼ Materials incorporating fluorescent π-electron conjugated molecular species for sensing and imaging are advantageous over other detection or identification methods such as colorimetric reporters. Fluorescent materials offer easy recognition of binding events due to the highly sensitive nature of fluorescence techniques down to the single molecule level. The properties of fluorescent molecules allow for rapid attenuation of observable readout due to the facile transport of excited state energy via both inter- and intramolecular pathways. This dissertation primarily focused on the development and study of a general platform for ratiometric fluorescent chemosensing using surface-immobilized oligomers, as well as in depth explorations of the unique properties of the chemosensors utilizing this platform. It encompasses bichromophoric fluorescent energy transfer cassettes consisting of a mono-disperse conjugated oligomer and a red-shifted energy transfer acceptor that is specifically reactive on the presence of a chosen analyte. Molecular organization of these cassettes into a surface- immobilized monolayer lends excellent and advantageous properties to the devices for sensing purposes primarily due to enhanced efficiency of intermolecular energy transfer within the monolayer. Several intriguing properties of this class of sensing devices are described, as well as how these properties, such as the effect of exciton delocalization and spatial control of energy transfer efficiency can be harnessed to generate practical chemosensing films that undergo significant emission wavelength (color) shift upon analyte exposure. The fundamental properties of this strategy toward ratiometric fluorescent chemosensing are described as applied to the measurements of acidity (pH) and fluoride ion concentration as practical examples. A smaller project that is part of this dissertation involves the synthesis of a semi- napthofluorescein fluorescent dye with a reactive handle for bioconjugation. This new dye exhibits an unusually large Stokes shift due to its broad absorption spectrum, and also shows highly bathochromically-shifted emission. The properties of this dye compound were studied and fully characterized and included as a chapter of this dissertation.

Subjects/Keywords: fluorescent sensors; organic materials; ratiometric sensors

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APA (6^th Edition):

Imsick, B. G. (2013). Fluorescent Materials for Chemical Sensing. (Doctoral Dissertation). Louisiana State University. Retrieved from etd-06172013-105703 ; https://digitalcommons.lsu.edu/gradschool_dissertations/228

Chicago Manual of Style (16^th Edition):

Imsick, Brian Gerard. “Fluorescent Materials for Chemical Sensing.” 2013. Doctoral Dissertation, Louisiana State University. Accessed January 26, 2021. etd-06172013-105703 ; https://digitalcommons.lsu.edu/gradschool_dissertations/228.

MLA Handbook (7^th Edition):

Imsick, Brian Gerard. “Fluorescent Materials for Chemical Sensing.” 2013. Web. 26 Jan 2021.

Vancouver:

Imsick BG. Fluorescent Materials for Chemical Sensing. [Internet] [Doctoral dissertation]. Louisiana State University; 2013. [cited 2021 Jan 26]. Available from: etd-06172013-105703 ; https://digitalcommons.lsu.edu/gradschool_dissertations/228.

Council of Science Editors:

Imsick BG. Fluorescent Materials for Chemical Sensing. [Doctoral Dissertation]. Louisiana State University; 2013. Available from: etd-06172013-105703 ; https://digitalcommons.lsu.edu/gradschool_dissertations/228

Oregon State University

7. Fordyce, Katherine. Polyion sensors based on induced ion extraction.

Degree: MS, Chemistry, 2009, Oregon State University

URL: http://hdl.handle.net/1957/11930

► A novel method for detecting the peptidase activity of clinically relevant peptidases was investigated using solid-contact electrochemical polyion sensors under chronopotentiometric control. Complete instrumental control… (more)

Subjects/Keywords: Electrodes; Electrochemical sensors

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APA (6^th Edition):

Fordyce, K. (2009). Polyion sensors based on induced ion extraction. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/11930

Chicago Manual of Style (16^th Edition):

Fordyce, Katherine. “Polyion sensors based on induced ion extraction.” 2009. Masters Thesis, Oregon State University. Accessed January 26, 2021. http://hdl.handle.net/1957/11930.

MLA Handbook (7^th Edition):

Fordyce, Katherine. “Polyion sensors based on induced ion extraction.” 2009. Web. 26 Jan 2021.

Vancouver:

Fordyce K. Polyion sensors based on induced ion extraction. [Internet] [Masters thesis]. Oregon State University; 2009. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/1957/11930.

Council of Science Editors:

Fordyce K. Polyion sensors based on induced ion extraction. [Masters Thesis]. Oregon State University; 2009. Available from: http://hdl.handle.net/1957/11930

8. Sindhu, Issac. Fabrication of Electrochemical Sensors for the Determination of Pharmaceuticals.

Degree: 2011, Cochin University of Science and Technology

URL: http://dyuthi.cusat.ac.in/purl/2351

►

Voltammetric sensors are an important class of electrochemical sensors in which the analytical information is obtained from the measurement of current obtained as a result… (more)

Subjects/Keywords: Electrochemical Sensors; Pharmaceuticals

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APA (6^th Edition):

Sindhu, I. (2011). Fabrication of Electrochemical Sensors for the Determination of Pharmaceuticals. (Thesis). Cochin University of Science and Technology. Retrieved from http://dyuthi.cusat.ac.in/purl/2351

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Sindhu, Issac. “Fabrication of Electrochemical Sensors for the Determination of Pharmaceuticals.” 2011. Thesis, Cochin University of Science and Technology. Accessed January 26, 2021. http://dyuthi.cusat.ac.in/purl/2351.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Sindhu, Issac. “Fabrication of Electrochemical Sensors for the Determination of Pharmaceuticals.” 2011. Web. 26 Jan 2021.

Vancouver:

Sindhu I. Fabrication of Electrochemical Sensors for the Determination of Pharmaceuticals. [Internet] [Thesis]. Cochin University of Science and Technology; 2011. [cited 2021 Jan 26]. Available from: http://dyuthi.cusat.ac.in/purl/2351.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Sindhu I. Fabrication of Electrochemical Sensors for the Determination of Pharmaceuticals. [Thesis]. Cochin University of Science and Technology; 2011. Available from: http://dyuthi.cusat.ac.in/purl/2351

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Manchester

9. Durazo Romero, Emmanuel Santiago. A METHODOLOGY FOR TRACKING THE SCAPULAUNDER DYNAMIC CONDITIONS.

Degree: 2016, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:301398

► In the diagnosis and analysis of shoulder instability a precise determination of the location and orientation of the Glenohumeral joint is important. A better understanding… (more)

▼ In the diagnosis and analysis of shoulder instability a precise determination of the location and orientation of the Glenohumeral joint is important. A better understanding of shoulder kinematics and kinetics will help clinicians and therapists in the diagnosis and treatment of shoulder pathologies. To-date, non-invasive skin-based methods are often either restricted to quasi-static measurements or are inaccurate during dynamic assessments at high humeral elevations as a result of soft skin artefact.Tracking the orientation of the scapula is difficult because it is surrounded by soft tissues, is held mainly by muscles and has only one direct point of attachment to the thorax. Instability of the glenohumeral joint generates poor functionality of the shoulder labrum and capsule as well as in the muscle and connective tissue structures that surround the shoulder. As the clinical phenomenon of shoulder instability is extremely complex, one of the priorities for the specialist in avoiding a faulty diagnosis is to recognise, identify and classify shoulder pathologies such as muscle patterning instability in the early stages of the investigation.A two stage methodology for non-invasive tracking of the scapula under dynamic conditions is presented in this work. The methodology provides scapula location by combining data from two surface mounted sensors using a regression-type equation formulated from quasi-static trials undertaken using a scapula locator and three IMUs (first stage). In the second stage, the least square fit is used to improve the scapular orientation by utilising data from only two IMUs (humerus and scapula) under dynamic conditions. Accuracy was assessed in an animal study by comparing results with those from a bone based method during quasi static and dynamic tests. Tests were also undertaken to investigate the errors induced by the soft tissue artefact in surface based scapula location measurement. In dynamic trials the methodology proved more accurate in determining scapula location than a standard skin-based approach, and showed that the greatest contribution to soft tissue artefact was from the epidermal, dermal and subcutaneous tissue layers as opposed to the muscle layer. We confirmed that, in cases where subjects have relatively small amounts of soft tissue surrounding the scapula, surface based methods could provide reasonable accuracy. Our methodology utilised subject-specific data to formulate a regression equation, and can be used to provide accurate, non-invasive tracking of the scapula under dynamic conditions in subjects regardless of individual body morphology. After the methodology validation, study tests were undertaken in a case study in order to estimate the scapula orientation under dynamic conditions in a human without symptoms of any shoulder pathologies and in one participant diagnosed with shoulder instability due to muscle patterning.The two stage methodology is proven to work in a healthy human participant in dynamic tests, in a person with no suspicion of shoulder instability.… Advisors/Committee Members: ZOU, ZHENMIN Z, Alonso Rasgado, Teresa, Zou, Zhenmin.

Subjects/Keywords: scapula; sensors; inertial

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APA (6^th Edition):

Durazo Romero, E. S. (2016). A METHODOLOGY FOR TRACKING THE SCAPULAUNDER DYNAMIC CONDITIONS. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:301398

Chicago Manual of Style (16^th Edition):

Durazo Romero, Emmanuel Santiago. “A METHODOLOGY FOR TRACKING THE SCAPULAUNDER DYNAMIC CONDITIONS.” 2016. Doctoral Dissertation, University of Manchester. Accessed January 26, 2021. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:301398.

MLA Handbook (7^th Edition):

Durazo Romero, Emmanuel Santiago. “A METHODOLOGY FOR TRACKING THE SCAPULAUNDER DYNAMIC CONDITIONS.” 2016. Web. 26 Jan 2021.

Vancouver:

Durazo Romero ES. A METHODOLOGY FOR TRACKING THE SCAPULAUNDER DYNAMIC CONDITIONS. [Internet] [Doctoral dissertation]. University of Manchester; 2016. [cited 2021 Jan 26]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:301398.

Council of Science Editors:

Durazo Romero ES. A METHODOLOGY FOR TRACKING THE SCAPULAUNDER DYNAMIC CONDITIONS. [Doctoral Dissertation]. University of Manchester; 2016. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:301398

Cornell University

10. Joe, Daniel. Microsensors For Chemical And Oncological Applications.

Degree: PhD, Electrical Engineering, 2014, Cornell University

URL: http://hdl.handle.net/1813/38793

► This dissertation presents characteristics and utilities of enhanced microsensors for chemical land oncological applications. Simple and cheap techniques for fabrication of mechanical and electrical sensing… (more)

Subjects/Keywords: Sensors; MEMS; Imaging

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APA (6^th Edition):

Joe, D. (2014). Microsensors For Chemical And Oncological Applications. (Doctoral Dissertation). Cornell University. Retrieved from http://hdl.handle.net/1813/38793

Chicago Manual of Style (16^th Edition):

Joe, Daniel. “Microsensors For Chemical And Oncological Applications.” 2014. Doctoral Dissertation, Cornell University. Accessed January 26, 2021. http://hdl.handle.net/1813/38793.

MLA Handbook (7^th Edition):

Joe, Daniel. “Microsensors For Chemical And Oncological Applications.” 2014. Web. 26 Jan 2021.

Vancouver:

Joe D. Microsensors For Chemical And Oncological Applications. [Internet] [Doctoral dissertation]. Cornell University; 2014. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/1813/38793.

Council of Science Editors:

Joe D. Microsensors For Chemical And Oncological Applications. [Doctoral Dissertation]. Cornell University; 2014. Available from: http://hdl.handle.net/1813/38793

University of Illinois – Chicago

11. Pressiani, Riccardo. A Sensor System to Track Individual and Social Animal Behavior in the Wild.

Degree: 2019, University of Illinois – Chicago

URL: http://hdl.handle.net/10027/23858

► Nowadays, biologists and social scientists are interested in understanding fundamental evolutionary, ecological, and population processes, such as decision making and activity recognition in a group… (more)

▼ Nowadays, biologists and social scientists are interested in understanding fundamental evolutionary, ecological, and population processes, such as decision making and activity recognition in a group of individuals. Collective behavior of animals like fish or birds is governed by local mathematical rules. However, discovering the rules and the dynamics in more complex societies requires a different approach. In this thesis research work, I developed a sensor system to remotely extract data from social wild animals. The system is currently designed for Olive baboons, which have been our target species for this stage of the project. The system is composed of a main sensor unit which is located in a collar for and at least one secondary unit that we designed as a bracelet. The main unit is composed of a GPS, a 9 axis IMU and a microphone. It provides Wi-Fi and Bluetooth connectivity to allow the primary and secondary units to communicate, as well as to extract the data from the system remotely. We exploit the Bluetooth Low Energy to implement a proximity sensor. The secondary unit is equipped with a 6 axis IMU. The expected outcome of this project is a long-term deployment of the designed units on a troop of wild baboons in an uninstrumented environment. For this reason, the specifications for the device to be developed raised a set of new challenges to be addressed. Among them, the whole system will need to be tolerant of possible hardware faults while the energy consumption needs to be monitored and reduced as much as possible. The proposed work will allow scientists to have a deeper and more granular understanding of animal behavior on a long-term basis. The benefits of this setting will be empowering the scientific community with useful data and information to address animal conservation issues. Moreover, this technology could be adapted to other environments rather than the wild one, such as the possibility to study animals in agricultural, domestic, and habituated settings (such as zoos). This will make an impact on the productivity and efficiency of farms, veterinary health, and well-being of domesticated animals. Advisors/Committee Members: Berger-Wolf, Tanya (advisor), Kash, Ian (committee member), Santambrogio, Marco Domenico (committee member), Berger-Wolf, Tanya (chair).

Subjects/Keywords: animal tracking; sensors

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APA (6^th Edition):

Pressiani, R. (2019). A Sensor System to Track Individual and Social Animal Behavior in the Wild. (Thesis). University of Illinois – Chicago. Retrieved from http://hdl.handle.net/10027/23858

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Pressiani, Riccardo. “A Sensor System to Track Individual and Social Animal Behavior in the Wild.” 2019. Thesis, University of Illinois – Chicago. Accessed January 26, 2021. http://hdl.handle.net/10027/23858.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Pressiani, Riccardo. “A Sensor System to Track Individual and Social Animal Behavior in the Wild.” 2019. Web. 26 Jan 2021.

Vancouver:

Pressiani R. A Sensor System to Track Individual and Social Animal Behavior in the Wild. [Internet] [Thesis]. University of Illinois – Chicago; 2019. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/10027/23858.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Pressiani R. A Sensor System to Track Individual and Social Animal Behavior in the Wild. [Thesis]. University of Illinois – Chicago; 2019. Available from: http://hdl.handle.net/10027/23858

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Victoria University of Wellington

12. Ryan, Brett. High Impedance Amplifiers for Non-Contact Bio-Potential Sensing.

Degree: 2013, Victoria University of Wellington

URL: http://hdl.handle.net/10063/4286

► This research develops a non-contact bio-potential sensor which can quickly respond to input transient events, is insensitive to mechanical disturbances, and operates with a bandwidth… (more)

▼ This research develops a non-contact bio-potential sensor which can quickly respond to input transient events, is insensitive to mechanical disturbances, and operates with a bandwidth from 0.04Hz – 20kHz, with input voltage noise spectral density of 200nV / √Hz at 1kHz. Initial investigations focused on the development of an active biasing scheme to control the sensors input impedance in response to input transient events. This scheme was found to significantly reduce the settling time of the sensor; however the input impedance was degraded, and the device was sensitive to distance fluctuations. Further research was undertaken, and a circuit developed to preserve fast settling times, whilst decreasing the sensitivity to distance fluctuations. A novel amplifier biasing network was developed using a pair of junction field effect transistors (JFETs), which actively compensates for DC and low frequency interference, whilst maintaining high impedance at signal frequencies. This biasing network significantly reduces the settling time, allowing bio-potentials to be measured quickly after sensor application, and speeding up recovery when the sensor is in saturation. Further work focused on reducing the sensitivity to mechanical disturbances even further. A positive feedback path with low phase error was introduced to reduce the effective input capacitance of the sensor. Tuning of the positive feedback loop gain was achieved with coarse and fine control potentiometers, allowing very precise gains to be achieved. The sensor was found to be insensitive to distance fluctuations of up to 0.5mm at 1Hz, and up to 2mm at 5kHz. As a complement to the non-contact sensor, an amplifier to measure differential bio-potentials was developed. This differential amplifier achieved a CMRR of greater than 100dB up to 10kHz. Precise fixed gains of 20±0:02dB, 40±0:01dB, 60±0:03dB, and 80±0:3dB were achieved, with input voltage noise density of 15nV / √Hz at 1kHz. Advisors/Committee Members: Teal, Paul.

Subjects/Keywords: Electrophysiology; Electronics; Sensors

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APA (6^th Edition):

Ryan, B. (2013). High Impedance Amplifiers for Non-Contact Bio-Potential Sensing. (Masters Thesis). Victoria University of Wellington. Retrieved from http://hdl.handle.net/10063/4286

Chicago Manual of Style (16^th Edition):

Ryan, Brett. “High Impedance Amplifiers for Non-Contact Bio-Potential Sensing.” 2013. Masters Thesis, Victoria University of Wellington. Accessed January 26, 2021. http://hdl.handle.net/10063/4286.

MLA Handbook (7^th Edition):

Ryan, Brett. “High Impedance Amplifiers for Non-Contact Bio-Potential Sensing.” 2013. Web. 26 Jan 2021.

Vancouver:

Ryan B. High Impedance Amplifiers for Non-Contact Bio-Potential Sensing. [Internet] [Masters thesis]. Victoria University of Wellington; 2013. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/10063/4286.

Council of Science Editors:

Ryan B. High Impedance Amplifiers for Non-Contact Bio-Potential Sensing. [Masters Thesis]. Victoria University of Wellington; 2013. Available from: http://hdl.handle.net/10063/4286

University of Aberdeen

13. De Mel, Geeth R. Intelligent resource selection for sensor-task assignment : a knowledge-based approach.

Degree: PhD, 2014, University of Aberdeen

URL: https://eu03.alma.exlibrisgroup.com/view/delivery/44ABE_INST/12152426310005941 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.629409

► Today, sensing resources play a crucial role in the success of critical tasks such as border monitoring and surveillance. Although there are various types of… (more)

Subjects/Keywords: 004; Intelligent sensors

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APA (6^th Edition):

De Mel, G. R. (2014). Intelligent resource selection for sensor-task assignment : a knowledge-based approach. (Doctoral Dissertation). University of Aberdeen. Retrieved from https://eu03.alma.exlibrisgroup.com/view/delivery/44ABE_INST/12152426310005941 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.629409

Chicago Manual of Style (16^th Edition):

De Mel, Geeth R. “Intelligent resource selection for sensor-task assignment : a knowledge-based approach.” 2014. Doctoral Dissertation, University of Aberdeen. Accessed January 26, 2021. https://eu03.alma.exlibrisgroup.com/view/delivery/44ABE_INST/12152426310005941 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.629409.

MLA Handbook (7^th Edition):

De Mel, Geeth R. “Intelligent resource selection for sensor-task assignment : a knowledge-based approach.” 2014. Web. 26 Jan 2021.

Vancouver:

De Mel GR. Intelligent resource selection for sensor-task assignment : a knowledge-based approach. [Internet] [Doctoral dissertation]. University of Aberdeen; 2014. [cited 2021 Jan 26]. Available from: https://eu03.alma.exlibrisgroup.com/view/delivery/44ABE_INST/12152426310005941 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.629409.

Council of Science Editors:

De Mel GR. Intelligent resource selection for sensor-task assignment : a knowledge-based approach. [Doctoral Dissertation]. University of Aberdeen; 2014. Available from: https://eu03.alma.exlibrisgroup.com/view/delivery/44ABE_INST/12152426310005941 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.629409

Latrobe University

14. Doeven, Egan Hendrik. Electrochemiluminescence based sensing.

Degree: PhD, 2012, Latrobe University

URL: http://hdl.handle.net/1959.9/503995

►

Thesis (Ph.D.) - La Trobe University, 2012

Submission note: "A thesis submitted in total fulfilment of the requirements for the degree of Doctor of Philosophy… (more)

Subjects/Keywords: Electrochemical sensors.; Chemiluminescence.

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APA (6^th Edition):

Doeven, E. H. (2012). Electrochemiluminescence based sensing. (Doctoral Dissertation). Latrobe University. Retrieved from http://hdl.handle.net/1959.9/503995

Chicago Manual of Style (16^th Edition):

Doeven, Egan Hendrik. “Electrochemiluminescence based sensing.” 2012. Doctoral Dissertation, Latrobe University. Accessed January 26, 2021. http://hdl.handle.net/1959.9/503995.

MLA Handbook (7^th Edition):

Doeven, Egan Hendrik. “Electrochemiluminescence based sensing.” 2012. Web. 26 Jan 2021.

Vancouver:

Doeven EH. Electrochemiluminescence based sensing. [Internet] [Doctoral dissertation]. Latrobe University; 2012. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/1959.9/503995.

Council of Science Editors:

Doeven EH. Electrochemiluminescence based sensing. [Doctoral Dissertation]. Latrobe University; 2012. Available from: http://hdl.handle.net/1959.9/503995

Louisiana State University

15. Acharya, Jiba Raj. Preparation and Studies of Ratiometric Fluorescent Chemosensors Based on the Attenuation of Excitation Energy Transfer.

Degree: PhD, Chemistry, 2011, Louisiana State University

URL: etd-07112011-161646 ; https://digitalcommons.lsu.edu/gradschool_dissertations/3503

► Molecular devices possessing pi-electron conjugated scaffold demonstrate unique capabilities as fluorescent chemosensors for the trace detection of analytes in a variety of environments. Important properties… (more)

Subjects/Keywords: Sensors; Fluorescence; Oligomer

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APA (6^th Edition):

Acharya, J. R. (2011). Preparation and Studies of Ratiometric Fluorescent Chemosensors Based on the Attenuation of Excitation Energy Transfer. (Doctoral Dissertation). Louisiana State University. Retrieved from etd-07112011-161646 ; https://digitalcommons.lsu.edu/gradschool_dissertations/3503

Chicago Manual of Style (16^th Edition):

Acharya, Jiba Raj. “Preparation and Studies of Ratiometric Fluorescent Chemosensors Based on the Attenuation of Excitation Energy Transfer.” 2011. Doctoral Dissertation, Louisiana State University. Accessed January 26, 2021. etd-07112011-161646 ; https://digitalcommons.lsu.edu/gradschool_dissertations/3503.

MLA Handbook (7^th Edition):

Acharya, Jiba Raj. “Preparation and Studies of Ratiometric Fluorescent Chemosensors Based on the Attenuation of Excitation Energy Transfer.” 2011. Web. 26 Jan 2021.

Vancouver:

Acharya JR. Preparation and Studies of Ratiometric Fluorescent Chemosensors Based on the Attenuation of Excitation Energy Transfer. [Internet] [Doctoral dissertation]. Louisiana State University; 2011. [cited 2021 Jan 26]. Available from: etd-07112011-161646 ; https://digitalcommons.lsu.edu/gradschool_dissertations/3503.

Council of Science Editors:

Acharya JR. Preparation and Studies of Ratiometric Fluorescent Chemosensors Based on the Attenuation of Excitation Energy Transfer. [Doctoral Dissertation]. Louisiana State University; 2011. Available from: etd-07112011-161646 ; https://digitalcommons.lsu.edu/gradschool_dissertations/3503

University of Louisville

16. Carroll, Susan. Application of microfabrication in electrochemical sensing.

Degree: PhD, 2011, University of Louisville

URL: 10.18297/etd/216 ; https://ir.library.louisville.edu/etd/216

► In this work, micro fabrication techniques are explored not only to simplify the production of complex lab on-a-chip devices (LOC), but also micro fabrication will… (more)

▼ In this work, micro fabrication techniques are explored not only to simplify the production of complex lab on-a-chip devices (LOC), but also micro fabrication will be utilized to create intelligent design features that will enhance an electrochemical sensor's capabilities. First, a low temperature adhesive bonding procedure for LOC glass devices was evaluated for capillary electrophoresis (CE) applications. This low temperature method utilizes UV adhesive to bond the glass microchips under the assistance of a mask aligner. The bonding process was carried out at room temperature in < 30 minutes, and provided a near 100% success rate. Microchips exhibited similar electroosmotic flow, separation characteristics, stable long-term performance, excellent chip-to-chip reproducibility, as their thermally bonded counter parts. This bonding approach required new but easily implemented structural features. In addition to cost effective and reliable fabrication techniques, microchips designed for long-term unattended electrochemical sensing have been evaluated. Specific advantages of the micro fabrication approach include the capability to create an intelligent design containing features such as redundant sensing electrodes, on-chip reference and auxiliary electrodes, and in situ electrode regeneration/calibration. One system targeted involves continuous pH monitoring in drinking water at solid-state iridium oxide electrodes. Microchips utilized consist of a flow-through silicon platform containing patterned gold electrodes onto which iridium oxide was deposited electrochemically. To simulate drinking water detection scenarios, sensors were integrated into a flow system. Elven equivalent pH electrodes where evaluated for electrode-to-electrode reproducibility, long-term drift, and response to expected interfering agents. With on-chip voltage treatment, absolute potentials measured for an electrode array are within ± 4 mY, with identical (±1 mY/pH unit) calibration slopes. This performance level is sustainable over weeks. Sensors for exhaustive coulometry were designed, fabricated and evaluated. Microchips contained thin-film gold working and Ag/AgCI pseudo-reference electrodes. A custom flow cell containing a counter electrode chamber was constructed to integrate the sensor and to create an electrolysis chamber with a fixed volume. Different chip designs were evaluated for reproducibility and longevity using Fe(CN)63-/4- as model analytes. The relative standard deviation (RSD) for a chip (over 42 days) was 5.5% whereas the sensor-to-sensor reproducibility was within 6.3%. A more practical application for utilizing exhaustive coulometry by the determination of free chlorine in drinking water is briefly evaluated. Initially studies will outline the challenges involved by analyzing hypochlorite. Advisors/Committee Members: Baldwin, Richard P..

Subjects/Keywords: Electrochemistry; Sensors; Microfabrication

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APA (6^th Edition):

Carroll, S. (2011). Application of microfabrication in electrochemical sensing. (Doctoral Dissertation). University of Louisville. Retrieved from 10.18297/etd/216 ; https://ir.library.louisville.edu/etd/216

Chicago Manual of Style (16^th Edition):

Carroll, Susan. “Application of microfabrication in electrochemical sensing.” 2011. Doctoral Dissertation, University of Louisville. Accessed January 26, 2021. 10.18297/etd/216 ; https://ir.library.louisville.edu/etd/216.

MLA Handbook (7^th Edition):

Carroll, Susan. “Application of microfabrication in electrochemical sensing.” 2011. Web. 26 Jan 2021.

Vancouver:

Carroll S. Application of microfabrication in electrochemical sensing. [Internet] [Doctoral dissertation]. University of Louisville; 2011. [cited 2021 Jan 26]. Available from: 10.18297/etd/216 ; https://ir.library.louisville.edu/etd/216.

Council of Science Editors:

Carroll S. Application of microfabrication in electrochemical sensing. [Doctoral Dissertation]. University of Louisville; 2011. Available from: 10.18297/etd/216 ; https://ir.library.louisville.edu/etd/216

University of Cincinnati

17. Ringo, Jessica M. Square planar d8 metal complexes with nitrogen-based ligands: structural analysis, metal-metal cooperativity, and applications.

Degree: PhD, Arts and Sciences: Chemistry, 2019, University of Cincinnati

URL: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1562842509907911

► This dissertation focuses on square planar platinum (II) and palladium (II) complexes. Specifically, complexes bearing the 1,4,7-trithiacyclononane ligand were examined to identify a structure correlation.… (more)

▼ This dissertation focuses on square planar platinum (II) and palladium (II) complexes. Specifically, complexes bearing the 1,4,7-trithiacyclononane ligand were examined to identify a structure correlation. The reducing capacity of thiols was explored by electrochemical methods using a mercury thin film electrode and spectroscopically via UV-visible absorption spectroscopy using a platinum dye upon reaction with thiol. Mononuclear, dinuclear, and trinuclear platinum and palladium macrocyclic complexes were synthesized and characterized. An educational workshop for students entering ninth grade is presented using platinum sensors from ongoing research projects. A search of the Cambridge Structural Database was conducted for platinum and palladium structures containing 1,4,7-trithiacyclononane. These structures were analyzed using a variety of methods to determine a structure correlation. They were plotted along the Berry pseudorotation coordinate, the percent deviation from ideal square pyramidal and trigonal bipyramidal geometries was calculated, and t5 values were calculated. This indicated that most structures lie in the square pyramidal region, with more palladium structures closer to trigonal bipyramidal. It was found that the donor or acceptor properties of the ancillary ligands influence the interaction between metal and axial sulfur. The palladium structures show interesting results. When plotted along the platinum trendline, it becomes apparent that most of the palladium structures lie above the platinum trendline. This suggests that for a given M•••Sax distance, the palladium atom undergoes a greater displacement from the plane. This may be a result of the palladium structures having a shallower potential energy surface along the square pyramidal distortion coordinate. To streamline the evaluation of candidate reagents to identify targets for hair care applications, strategies were developed for assessing the reducing properties of thiols. The electrochemical techniques used at the mercury thin film electrode include cyclic voltammetry, differential pulse voltammetry, and differential stripping pulse voltammetry. These techniques do not always give completely reversible results, and show multiple anodic waves in some cases, causing interpretation to be challenging. Another method used was indirect measure of the reducing properties of the thiol by observing the absorbance maximum (?max) of a charge transfer (CT) band for the platinum-thiolate complex. The synthesis and characterization of platinum and palladium complexes with an azamacrocyclic ligand, bis-para-xylylBISDIEN, are reported. This ligand was chosen for its ability to incorporate two metal centers so that dinuclear complexes could be synthesized for multi-electron transfer purposes. Five complexes using this ligand are reported, including the first mononuclear complexes of this architecture. A workshop for students entering ninth grade is presented with the goal of engaging them with real research projects. The structure of the workshop was… Advisors/Committee Members: Guan, Hairong (Committee Chair).

Subjects/Keywords: Chemistry; platinum,sensors

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APA (6^th Edition):

Ringo, J. M. (2019). Square planar d8 metal complexes with nitrogen-based ligands: structural analysis, metal-metal cooperativity, and applications. (Doctoral Dissertation). University of Cincinnati. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=ucin1562842509907911

Chicago Manual of Style (16^th Edition):

Ringo, Jessica M. “Square planar d8 metal complexes with nitrogen-based ligands: structural analysis, metal-metal cooperativity, and applications.” 2019. Doctoral Dissertation, University of Cincinnati. Accessed January 26, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1562842509907911.

MLA Handbook (7^th Edition):

Ringo, Jessica M. “Square planar d8 metal complexes with nitrogen-based ligands: structural analysis, metal-metal cooperativity, and applications.” 2019. Web. 26 Jan 2021.

Vancouver:

Ringo JM. Square planar d8 metal complexes with nitrogen-based ligands: structural analysis, metal-metal cooperativity, and applications. [Internet] [Doctoral dissertation]. University of Cincinnati; 2019. [cited 2021 Jan 26]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1562842509907911.

Council of Science Editors:

Ringo JM. Square planar d8 metal complexes with nitrogen-based ligands: structural analysis, metal-metal cooperativity, and applications. [Doctoral Dissertation]. University of Cincinnati; 2019. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1562842509907911

University of Cambridge

18. Oluwasanya, Pelumi. Portable and Non-Intrusive Sensors for Monitoring Air Pollution.

Degree: PhD, 2019, University of Cambridge

URL: https://www.repository.cam.ac.uk/handle/1810/307809

► Air pollution is a global problem. Particulate Matter (PM) of aerodynamic diameter smaller than 2.5 μm (known as PM₂.₅) and NO₂ are important classes of… (more)

▼ Air pollution is a global problem. Particulate Matter (PM) of aerodynamic diameter smaller than 2.5 μm (known as PM₂.₅) and NO₂ are important classes of pollutants because of their size and emission sources and potential effects of exposure beyond 25 μm/m³ and 40 μm/m³ annual mean respectively. This thesis presents work that has been done to develop new and miniaturized/non intrusive (<1 cm³ in volume) sensors for monitoring both classes of pollutants. A review of the current landscape of both sensor types was carried out and the challenges identified. For PM, it is the price (>$300), size (smallest ones are several tens of cm³ in volume) and the accuracy (±10%) of the sensors that motivated the design, simulation and subsequent fabrication of the miniaturized device. It is shown that the capacitive-based sensor is easily miniaturizable and has sensitivity to single particles flowing at a distance of up to 18 μm above the electrode surface. This new sensor concept and its simulated multiphysics model is unique because it uses thermophoresis to separate particles of PM₂.₅ and PM₁₀ from a single airflow. For the NO₂ sensors, the availability of selective sensors that function in humid environments is a major need. Further, both sensor types need to be robust against interferent species and environmental variations. In this thesis, I present chemiresistors based on graphene/carboxymethyl cellulose (CMC) and carbon nanotube/CMC composites capable of sensing low, down to 20 ppm and 6 ppm, NO₂ concentration respectively. The new sensors show selectivity to NO₂ because of the selective oxidation of the composite component CMC salt by NO₂. Due to the Solubility of CMC in water and response of the sensor to ppm-level NO₂, a washable textile-based NO₂ sensor based on a reduced graphene oxide/MoS₂ composite material was developed. The sensor has selectivity to NO₂ and can detect ultra-low (100 ppb) NO₂ concentration levels in >60% humid air. It can also detect down to 20 ppb NO₂ in dry air. The next objective, beyond the scope of this work, is to integrate both PM₂.₅ and NO₂ detection and monitoring. Commercial exploitation of the technologies developed is now being explored through a University spin-out.

Subjects/Keywords: Sensors; Air pollution

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APA (6^th Edition):

Oluwasanya, P. (2019). Portable and Non-Intrusive Sensors for Monitoring Air Pollution. (Doctoral Dissertation). University of Cambridge. Retrieved from https://www.repository.cam.ac.uk/handle/1810/307809

Chicago Manual of Style (16^th Edition):

Oluwasanya, Pelumi. “Portable and Non-Intrusive Sensors for Monitoring Air Pollution.” 2019. Doctoral Dissertation, University of Cambridge. Accessed January 26, 2021. https://www.repository.cam.ac.uk/handle/1810/307809.

MLA Handbook (7^th Edition):

Oluwasanya, Pelumi. “Portable and Non-Intrusive Sensors for Monitoring Air Pollution.” 2019. Web. 26 Jan 2021.

Vancouver:

Oluwasanya P. Portable and Non-Intrusive Sensors for Monitoring Air Pollution. [Internet] [Doctoral dissertation]. University of Cambridge; 2019. [cited 2021 Jan 26]. Available from: https://www.repository.cam.ac.uk/handle/1810/307809.

Council of Science Editors:

Oluwasanya P. Portable and Non-Intrusive Sensors for Monitoring Air Pollution. [Doctoral Dissertation]. University of Cambridge; 2019. Available from: https://www.repository.cam.ac.uk/handle/1810/307809

King Abdullah University of Science and Technology

19. Sapsanis, Christos. Capacitive Structures for Gas and Biological Sensing.

Degree: 2015, King Abdullah University of Science and Technology

URL: http://hdl.handle.net/10754/550470

► The semiconductor industry was benefited by the advances in technology in the last decades. This fact has an impact on the sensors field, where the… (more)

Subjects/Keywords: Capacitive Sensors; Gas Measurement System; Gas Sensors; Biosensors; Flexibile Sensors; Fractal

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APA (6^th Edition):

Sapsanis, C. (2015). Capacitive Structures for Gas and Biological Sensing. (Thesis). King Abdullah University of Science and Technology. Retrieved from http://hdl.handle.net/10754/550470

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Sapsanis, Christos. “Capacitive Structures for Gas and Biological Sensing.” 2015. Thesis, King Abdullah University of Science and Technology. Accessed January 26, 2021. http://hdl.handle.net/10754/550470.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Sapsanis, Christos. “Capacitive Structures for Gas and Biological Sensing.” 2015. Web. 26 Jan 2021.

Vancouver:

Sapsanis C. Capacitive Structures for Gas and Biological Sensing. [Internet] [Thesis]. King Abdullah University of Science and Technology; 2015. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/10754/550470.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Sapsanis C. Capacitive Structures for Gas and Biological Sensing. [Thesis]. King Abdullah University of Science and Technology; 2015. Available from: http://hdl.handle.net/10754/550470

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Houston

20. Li, Weijie. Innovative Structural Health Monitoring Using Smart Sensors.

Degree: PhD, Mechanical Engineering, 2017, University of Houston

URL: http://hdl.handle.net/10657/4517

► Civil, mechanical, and aerospace engineering structures, which serve as the foundation for modern society, undergo continuous strength deterioration due to loading and environmental impacts, and… (more)

▼ Civil, mechanical, and aerospace engineering structures, which serve as the foundation for modern society, undergo continuous strength deterioration due to loading and environmental impacts, and may suffer from the associated potential of damage accumulation. Structural health monitoring (SHM) is a process in which damage identification strategies are implemented for determining the presence, location, and severity of damages, and the remaining life of the structure after the occurrence of damage. There are numerous smart sensors available targeted at various SHM applications, and among which the fiber optic sensors and piezoelectric sensors are two of the most widely adopted smart sensors. Fiber optic sensors are passive, which have the advantages of small size, remote sensing, corrosion resistance, immunity to electromagnetic interference, and excellent multiplicity. Piezoelectric sensors work on the direct and inverse effect of piezoelectricity, which can be used as both sensors and actuators. This dissertation explores five innovative designs and applications of these two types of smart sensors in the field of SHM, especially in civil engineering, with two of them are based on fiber optic sensors and the other three are based on piezoelectric sensors. In the first study, a novel rebar corrosion detection technique for reinforced concrete structure was proposed based on active thermal probe. The active thermal probe was designed and fabricated according to the combined fiber Bragg grating and carbon fiber. The magnitude of the temperature response of the thermal probe correlates to the corrosion severity. In the second study, a novel type of ferromagnetic distance-based metal loss sensor was proposed based on the principle of fiber optic macro-bend loss. The practicality of the proposed distance sensor for metal loss measurement was validated through scanning the fabricated corrosion samples. The third study presented the feasibility of using smart aggregates, which are a type of embedded piezoelectric sensors, as embedded acoustic emission sensors for the health monitoring of concrete structures. The performance of the embedded smart aggregates were compared with the traditional surface mounted acoustic emission sensors in their ability to detect and evaluate the damage to the concrete structure. The fourth study experimentally investigated the feasibility of debonding characterization in fiber-reinforced polymer rebar reinforced concrete using acoustic emission technique. The results demonstrated a clear correlation between the damage evolution of carbon-fiber-reinforced polymer rebar pullout and the acoustic emission parameters. The final study employed an electromechanical impedance-based structural health monitoring technique by applying piezoelectric sensors to detect the debonding damage of a carbon fiber reinforced polymer rebar reinforced concrete. Statistical damage metrics, root mean square deviation and mean absolute percentage deviation, were used to quantify the changes in impedance… Advisors/Committee Members: Song, Gangbing (advisor), Franchek, Matthew A. (committee member), Mo, Yi-Lung (committee member), Grigoriadis, Karolos M. (committee member), Sun, Li (committee member).

Subjects/Keywords: Structural health monitoring; Smart Sensors; Fiber optic sensors; Piezoelectric Sensors

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APA (6^th Edition):

Li, W. (2017). Innovative Structural Health Monitoring Using Smart Sensors. (Doctoral Dissertation). University of Houston. Retrieved from http://hdl.handle.net/10657/4517

Chicago Manual of Style (16^th Edition):

Li, Weijie. “Innovative Structural Health Monitoring Using Smart Sensors.” 2017. Doctoral Dissertation, University of Houston. Accessed January 26, 2021. http://hdl.handle.net/10657/4517.

MLA Handbook (7^th Edition):

Li, Weijie. “Innovative Structural Health Monitoring Using Smart Sensors.” 2017. Web. 26 Jan 2021.

Vancouver:

Li W. Innovative Structural Health Monitoring Using Smart Sensors. [Internet] [Doctoral dissertation]. University of Houston; 2017. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/10657/4517.

Council of Science Editors:

Li W. Innovative Structural Health Monitoring Using Smart Sensors. [Doctoral Dissertation]. University of Houston; 2017. Available from: http://hdl.handle.net/10657/4517

Massey University

21. Swanson, Adam James. Sensors for optics-based strain, temperature and chemical sensing.

Degree: PhD, Physics, 2015, Massey University

URL: http://hdl.handle.net/10179/7526

► This thesis is a study of optical sensor development with two themes. Firstly, the development of polymer coated glass optical fibre sensors for relative humidity… (more)

▼ This thesis is a study of optical sensor development with two themes. Firstly, the development of polymer coated glass optical fibre sensors for relative humidity sensing. Secondly, the development and characterisation of novel planar dye- doped polymer waveguide sensors for strain, temperature and chemical sensing. This thesis was motivated by the need to measure strain, temperature and chemi- cals in harsh conditions with high precision (including compact, high electric field or explosive environments where traditional sensors can not be used). In addi- tion, dye-doped polymer optical chips are being developed for telecommunication applications and their dependence on humidity, temperature and strain will be a key consideration. Sensor applications utilising dye-doping can achieve a greater sensitivity over traditional undoped sensors. The developed polymer coated glass optical fibre sensors were characterised with humidity calibration experiments. A polyimide based coating was found to have a humidity response of 7.2 pm/%rh corresponding to a coefficient of moisture expansion of 74 ppm/%rh. A series of modified block co-polymer coatings was investigated to identify important chemical structure features. Enhanced perfor- mance was achieved by the modification of the chemical structure of an existing commercial polyetherimide. A correlation between coating thickness and optical fibre diameter was observed where the humidity response was enhanced by using thicker coatings or smaller diameter fibres due to a fibre to coating ratio effect. The time response of the sensor’s to a humidity step change was measured. To ex- plore the response time dependencies the sensors humidity step change response a novel two-layer model was proposed. A mesh model was also utilised to calcu- late the diffusion coefficient for each coating. The time response was found to be highly dependent on coating thickness with response time increasing significantly with thickness. Novel dye-doped polymer sensors were developed by photo-bleaching waveg- uides containing Bragg gratings, with Bragg reflections observed. The sensor fabrication process was refined by modifying the waveguide dimensions and util- ising precise phase mask alignment to obtain a single-mode waveguide with a single Bragg reflection. Methods of coupling the film sensor to a single-mode fibre with a housing unit was explored and a novel method proposed and tested. The film sensors were characterised with strain, temperature and chemical sensing experiments. A strong humidity response in the range of 55 to 65 pm/%rh and the time responses to a humidity step change were measured. Strain responses in the range of 1.70 to 1.80 pm/µo were observed, exceeding that of comparable silica and PMMA sensors.

Subjects/Keywords: Optical detectors; Design and construction; Polymer coated glass optical fibre sensors; Relative humidity sensors; Strain sensors; Temperature sensors; Chemical sensors

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APA (6^th Edition):

Swanson, A. J. (2015). Sensors for optics-based strain, temperature and chemical sensing. (Doctoral Dissertation). Massey University. Retrieved from http://hdl.handle.net/10179/7526

Chicago Manual of Style (16^th Edition):

Swanson, Adam James. “Sensors for optics-based strain, temperature and chemical sensing.” 2015. Doctoral Dissertation, Massey University. Accessed January 26, 2021. http://hdl.handle.net/10179/7526.

MLA Handbook (7^th Edition):

Swanson, Adam James. “Sensors for optics-based strain, temperature and chemical sensing.” 2015. Web. 26 Jan 2021.

Vancouver:

Swanson AJ. Sensors for optics-based strain, temperature and chemical sensing. [Internet] [Doctoral dissertation]. Massey University; 2015. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/10179/7526.

Council of Science Editors:

Swanson AJ. Sensors for optics-based strain, temperature and chemical sensing. [Doctoral Dissertation]. Massey University; 2015. Available from: http://hdl.handle.net/10179/7526

Univerzitet u Beogradu

22. Tanasković, Dragan M., 1960-. Nanoplazmonski metamaterijali za novu generaciju hemijskih, biohemijskih i bioloških senzora.

Degree: Elektrotehnički fakultet, 2016, Univerzitet u Beogradu

URL: https://fedorabg.bg.ac.rs/fedora/get/o:13920/bdef:Content/get

►

Elektrotehnika - Fotonika / Electrical Engineering - Photonics

Potreba za osetljivim senzorima hemijskih, biohemijskih i bioloških agensa u današnjem svetu sve je veća, od industrije,… (more)

▼

Elektrotehnika - Fotonika / Electrical Engineering - Photonics

Potreba za osetljivim senzorima hemijskih, biohemijskih i bioloških agensa u današnjem svetu sve je veća, od industrije, preko biomedicine, do očuvanja okoline i protivterorističke odbrane. MeĎu najosetljivijim i najsvestranijim napravama ove vrste su elektromagnetni senzori, naročito oni koji svoju funkciju zasnivaju napovršinskimplazmonima-polaritonima (surface plasmons polaritons, SPP) na meĎupovršini metal-dielektrik. Sa dolaskom nanotehnologija otvorila se mogućnost da se proizvedu metal-dielektrični nanokompoziti, čime je omogućen novi stepen slobode u dobijanju SPP senzora i stvorena nova grana elektromagnetne optike koja je nazvana plazmonika. Posebno bitan proboj predstavljaju elektromagnetni metamaterijali koji se mogu definisati kao veštačke strukture sa elektromagnetnim, odnosno optičkim osobinama, kakve se ne pojavljuju uobičajeno u prirodi. Moţda najpoznatiji primer sutzv. „levoruki“ metamaterijali, strukture čiji efektivni indeks prelamanja u odreĎenom opsegu talasnih duţina dostiţe negativne vrednosti. Ova disertacija okrenuta je razmatranju upotrebljivosti plazmonskih metamaterijala za visoko osetljive senzore hemijskih, biohemijskih i bioloških agensa. Osnovna ideja je da se kontrolisanim strukturiranjem metal-dielektričnih nanokompozita obezbedi projektovanje novih elektromagnetnih modova. Oni će se zatim iskoristiti za prevazilaţenje principskih ograničenja konvencionalnih plazmonskih senzora i povećanje njihove osetljivosti i selektivnosti. Koncept metamaterijala s jedne strane daje mogućnost inţenjeringa frekventne disperzije i time formiranja optičkih modova neostvarivih u prirodnim materijalima, a s druge dozvoljava modifikovanje prostorne disperzije, odnosno kontrolisano menjanje optičkog prostora (tzv. transformaciona optika). Jedna od osnovnih posledica ovoga jeste mogućnost lokalizovanja optičkog polja na duboko podtalasne domene, što dovodi do drastičnogpovećanja osetljivosti hemijskih, biohemijskih i bioloških senzora. Druga posledica je mogućnost formiranja plazmonskih nanokompozita koji uvoĎenjem novih modova omogućuju selektivno očitavanje prisustva ciljanih agensa. Najzad, u takvim v strukturama konstrukcijski se obezbeĎuje efikasna spregasa snopom za očitavanje, što je jedan od velikih problema kod konvencionalnih SPP senzora...

Advisors/Committee Members: Jakšić, Zoran..

Subjects/Keywords: Nanotechnologies; Nanophotonics; Plasmonics; Metamaterials; Plasmonic Sensors; Chemical and Biological Sensors; Refractometric Sensors

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APA (6^th Edition):

Tanasković, Dragan M., 1. (2016). Nanoplazmonski metamaterijali za novu generaciju hemijskih, biohemijskih i bioloških senzora. (Thesis). Univerzitet u Beogradu. Retrieved from https://fedorabg.bg.ac.rs/fedora/get/o:13920/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 (16^th Edition):

Tanasković, Dragan M., 1960-. “Nanoplazmonski metamaterijali za novu generaciju hemijskih, biohemijskih i bioloških senzora.” 2016. Thesis, Univerzitet u Beogradu. Accessed January 26, 2021. https://fedorabg.bg.ac.rs/fedora/get/o:13920/bdef:Content/get.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Tanasković, Dragan M., 1960-. “Nanoplazmonski metamaterijali za novu generaciju hemijskih, biohemijskih i bioloških senzora.” 2016. Web. 26 Jan 2021.

Vancouver:

Tanasković, Dragan M. 1. Nanoplazmonski metamaterijali za novu generaciju hemijskih, biohemijskih i bioloških senzora. [Internet] [Thesis]. Univerzitet u Beogradu; 2016. [cited 2021 Jan 26]. Available from: https://fedorabg.bg.ac.rs/fedora/get/o:13920/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:

Tanasković, Dragan M. 1. Nanoplazmonski metamaterijali za novu generaciju hemijskih, biohemijskih i bioloških senzora. [Thesis]. Univerzitet u Beogradu; 2016. Available from: https://fedorabg.bg.ac.rs/fedora/get/o:13920/bdef:Content/get

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Illinois – Urbana-Champaign

23. McKeown, Steven James. Development of predictable palladium based optomechanical hydrogen sensors.

Degree: PhD, Electrical & Computer Engr, 2016, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/90783

► In addition to its use as an energy storage medium or fuel, hydrogen gas has a variety of commercial applications such as methanol and ammonia… (more)

▼ In addition to its use as an energy storage medium or fuel, hydrogen gas has a variety of commercial applications such as methanol and ammonia production. Given the volatility and flammability of hydrogen, as well as its small molecular size, fast and accurate sensors capable of operating in a variety of environments are necessary. A large subset of hydrogen gas sensors rely on palladium metal, which is known to reversibly react with hydrogen to form palladium hydride. This results in a change in the optical, electrical and mechanical properties of the film. These changes are a result of a change the Fermi level and band structure of the metal, as well as an increase in lattice constant in the presence of hydrogen. The change in complex refractive index plays a role in both reflection/transmission, and for determining resonances or guided modes in waveguides and other sub-wavelength features. However, the increase in the lattice constant of the metal, a process called hydrogen induced lattice expansion, was found to be equally important in modeling the response of the sensors, both from an optical and a mechanical perspective. This dissertation is concerned with the simulation, fabrication, and testing of palladium based optomechanical sensors, particularly to elucidate the role of hydrogen induced lattice expansion in their design and functionality. Two specific sensor designs: a nano-aperture based sensor and a cantilever based sensor were designed, fabricated, characterized, and modeled. The first sensor developed was based on a single nano-aperture etched into a palladium coated fiber facet. Designed to operate based on the principle of extraordinary transmission and the change in optical constants of the palladium, this sensor showed experimental sensitivity down to 150ppm in transmission and 50 ppm reflection. However, without inclusion of the mechanical effects, the device behavior was unpredictable. Separate work was thus carried out to characterize lattice expansion in thin palladium films using quantitative phase imaging techniques, so that a new sensor could be designed and accurately modelled. This second fabricated sensor consisted of a Pd coated cantilever which operated based on optical probing of mechanical deflections. For more thorough characterization, the cantilever was measured using the same phase imaging techniques. The results of this analysis further improved the understanding of thin film expansion and the capabilities of diffraction phase microscopy for material analysis. Furthermore, this culminated in the fabrication of a sensitive and reliable optomechanical hydrogen sensor whose response matched theory. Advisors/Committee Members: Goddard, Lynford (advisor), Goddard, Lynford (Committee Chair), Boppart, Stephen (committee member), Allain, Jean Paul (committee member), Dragic, Peter (committee member).

Subjects/Keywords: optical fiber sensors; hydrogen sensors; palladium; optomechanical sensors; hydrogen induced lattice expansion

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APA (6^th Edition):

McKeown, S. J. (2016). Development of predictable palladium based optomechanical hydrogen sensors. (Doctoral Dissertation). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/90783

Chicago Manual of Style (16^th Edition):

McKeown, Steven James. “Development of predictable palladium based optomechanical hydrogen sensors.” 2016. Doctoral Dissertation, University of Illinois – Urbana-Champaign. Accessed January 26, 2021. http://hdl.handle.net/2142/90783.

MLA Handbook (7^th Edition):

McKeown, Steven James. “Development of predictable palladium based optomechanical hydrogen sensors.” 2016. Web. 26 Jan 2021.

Vancouver:

McKeown SJ. Development of predictable palladium based optomechanical hydrogen sensors. [Internet] [Doctoral dissertation]. University of Illinois – Urbana-Champaign; 2016. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/2142/90783.

Council of Science Editors:

McKeown SJ. Development of predictable palladium based optomechanical hydrogen sensors. [Doctoral Dissertation]. University of Illinois – Urbana-Champaign; 2016. Available from: http://hdl.handle.net/2142/90783

University of California – San Diego

24. Zaretski, Aliaksandr. Scalable fabrication of large-area graphene and graphene nano-composite films for flexible electronics and sensors.

Degree: NanoEngineering, 2016, University of California – San Diego

URL: http://www.escholarship.org/uc/item/5167f9dj

► Graphene, a 2D allotrope of carbon, is a newly discovered material that possesses mechanical and electronic properties that are very appealing to multiple engineering applications.… (more)

▼ Graphene, a 2D allotrope of carbon, is a newly discovered material that possesses mechanical and electronic properties that are very appealing to multiple engineering applications. More than 9000 patents have been filed to date covering technologies that utilize graphene, yet only a small number of those are being realized in practice due to the high cost of graphene and limited developed processes associated with its fabrication and integration on any meaningful scale (synthesis, transfer, patterning, packaging, etc.,) The following dissertation presents several solutions to the existing problems in industrializing graphene. In particular, Chapter 1 of the dissertation is a general overview of the currently discovered methods (including the one developed by the author) of non-destructive transfer of large-area graphene from synthesis substrates onto the final application substrate. Chapter 2 is devoted to a detailed coverage of the process (MAE: Metal-Assisted Exfoliation [of graphene]) developed by the author that addresses the issue of industrial scale transfer of graphene. The described process can potentially significantly increase the yields of the industrial production of graphene while drastically reducing the environmental impact of such operation. It also offers the underlying principle for several specific applications described in Chapters 3 and 4. Specifically, Chapter 3 describes the use of MAE in conjunction with nanoskiving (use of an ultramicrotome) to generate the smallest possible separations between metallic nanowires using the thickness of graphene. Such gold/graphene/gold nanowire composites could be used in molecular electronics, nano-photonics, or as described in the chapter as SERS substrates for molecular detection. Chapter 4 is devoted to several best-in-class specific sensing applications developed by the author where graphene is a functional component as well as a synthetic substrate. The multi-modal sensors composed of graphene and noble metal nanoislands (NI) demonstrated outstanding piezo-resistive properties and allowed the detection of mechanical strains as low as 0.001% while having the dynamic range of at least 5 orders of magnitude. The chapter describes the use of these sensors in health monitoring, bio-sensing, and chemical sensing applications. Appendix A and B, in their turn, cover in detail the experimental procedures used in Chapters 3 and 4 respectively.

Subjects/Keywords: Nanotechnology; Engineering; graphene; manufacturing; sensors

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APA (6^th Edition):

Zaretski, A. (2016). Scalable fabrication of large-area graphene and graphene nano-composite films for flexible electronics and sensors. (Thesis). University of California – San Diego. Retrieved from http://www.escholarship.org/uc/item/5167f9dj

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Zaretski, Aliaksandr. “Scalable fabrication of large-area graphene and graphene nano-composite films for flexible electronics and sensors.” 2016. Thesis, University of California – San Diego. Accessed January 26, 2021. http://www.escholarship.org/uc/item/5167f9dj.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Zaretski, Aliaksandr. “Scalable fabrication of large-area graphene and graphene nano-composite films for flexible electronics and sensors.” 2016. Web. 26 Jan 2021.

Vancouver:

Zaretski A. Scalable fabrication of large-area graphene and graphene nano-composite films for flexible electronics and sensors. [Internet] [Thesis]. University of California – San Diego; 2016. [cited 2021 Jan 26]. Available from: http://www.escholarship.org/uc/item/5167f9dj.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Zaretski A. Scalable fabrication of large-area graphene and graphene nano-composite films for flexible electronics and sensors. [Thesis]. University of California – San Diego; 2016. Available from: http://www.escholarship.org/uc/item/5167f9dj

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Rochester Institute of Technology

25. Simmons, Danielle. Hyperspectral monitoring of chemically sensitive plant sensors.

Degree: Chester F. Carlson Center for Imaging Science (COS), 2013, Rochester Institute of Technology

URL: https://scholarworks.rit.edu/theses/2896

► Current events clearly demonstrate that chemical and biological threats against the public are very real. Automated detection of chemical threats is a necessary component of… (more)

Subjects/Keywords: Bio-sensors; Remote sensing

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APA (6^th Edition):

Simmons, D. (2013). Hyperspectral monitoring of chemically sensitive plant sensors. (Thesis). Rochester Institute of Technology. Retrieved from https://scholarworks.rit.edu/theses/2896

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Simmons, Danielle. “Hyperspectral monitoring of chemically sensitive plant sensors.” 2013. Thesis, Rochester Institute of Technology. Accessed January 26, 2021. https://scholarworks.rit.edu/theses/2896.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Simmons, Danielle. “Hyperspectral monitoring of chemically sensitive plant sensors.” 2013. Web. 26 Jan 2021.

Vancouver:

Simmons D. Hyperspectral monitoring of chemically sensitive plant sensors. [Internet] [Thesis]. Rochester Institute of Technology; 2013. [cited 2021 Jan 26]. Available from: https://scholarworks.rit.edu/theses/2896.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Simmons D. Hyperspectral monitoring of chemically sensitive plant sensors. [Thesis]. Rochester Institute of Technology; 2013. Available from: https://scholarworks.rit.edu/theses/2896

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Minnesota

26. Grandall, David Rossing. The performance and efficiency of hydraulic pumps and motors.

Degree: MS, Mechanical Engineering, 2010, University of Minnesota

URL: http://purl.umn.edu/59818

►

University of Minnesota M.S. thesis. January 2010. Major: Mechanical Engineering. Advisors: Thomas Chase, Perry Li. 1 computer file (PDF); xii, 123 pages, appendices A-C. Ill.… (more)

Subjects/Keywords: Pumps; Sensors; Hydraulic; Mechanical Engineering

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APA (6^th Edition):

Grandall, D. R. (2010). The performance and efficiency of hydraulic pumps and motors. (Masters Thesis). University of Minnesota. Retrieved from http://purl.umn.edu/59818

Chicago Manual of Style (16^th Edition):

Grandall, David Rossing. “The performance and efficiency of hydraulic pumps and motors.” 2010. Masters Thesis, University of Minnesota. Accessed January 26, 2021. http://purl.umn.edu/59818.

MLA Handbook (7^th Edition):

Grandall, David Rossing. “The performance and efficiency of hydraulic pumps and motors.” 2010. Web. 26 Jan 2021.

Vancouver:

Grandall DR. The performance and efficiency of hydraulic pumps and motors. [Internet] [Masters thesis]. University of Minnesota; 2010. [cited 2021 Jan 26]. Available from: http://purl.umn.edu/59818.

Council of Science Editors:

Grandall DR. The performance and efficiency of hydraulic pumps and motors. [Masters Thesis]. University of Minnesota; 2010. Available from: http://purl.umn.edu/59818

Oregon State University

27. Iman, Zahra. Learning Topical Social Media Sensors for Twitter.

Degree: MS, Computer Science, 2016, Oregon State University

URL: http://hdl.handle.net/1957/59188

► Social media sources such as Twitter represent a massively distributed social sensor over diverse topics ranging from social and political events to entertainment and sports… (more)

▼ Social media sources such as Twitter represent a massively distributed social sensor over diverse topics ranging from social and political events to entertainment and sports news. However, due to the overwhelming volume of content, it can be difﬁcult to identify novel and signiﬁcant content within a broad topic in a timely fashion. To this end, this thesis proposes a scalable and practical method to automatically construct social sensors for generic topics. The concept of using social media as a sensor for detection of events and news has been proposed in the literature. However, we argue that most of these works do not focus on targeted content detection or they use very basic methods for collecting the topical data for further analysis. This demonstrates a gap in the use of social media as a sensor for high-quality topical content detection that we aim to address via machine learning. In this thesis, given minimal supervised training content from a user, we learn to identify topical tweets from millions of features capturing content, user and social interactions on Twitter. On a corpus of over 800 million English Tweets collected from the Twitter streaming API during 2013 and 2014 and learning for 10 diverse topics, we empirically show that our learned social sensor automatically generalizes to unseen future content with high ranking and precision scores. Furthermore, we provide an extensive analysis of features and feature types across different topics that reveals, for example, that (1) largely independent of topic, simple terms are the most informative feature followed by location features and that (2) the number of unique hashtags and tweets by a user correlates more with their informativeness than their follower or friend count. In summary, this work provides a novel, effective, and efﬁcient way to learn topical social sensors requiring minimal user curation effort and offering strong generalization performance for identifying future topical content. Advisors/Committee Members: Sanner, Scott P. (advisor), Termehchy, Arash (committee member).

Subjects/Keywords: Social Media Sensors; Social media

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APA (6^th Edition):

Iman, Z. (2016). Learning Topical Social Media Sensors for Twitter. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/59188

Chicago Manual of Style (16^th Edition):

Iman, Zahra. “Learning Topical Social Media Sensors for Twitter.” 2016. Masters Thesis, Oregon State University. Accessed January 26, 2021. http://hdl.handle.net/1957/59188.

MLA Handbook (7^th Edition):

Iman, Zahra. “Learning Topical Social Media Sensors for Twitter.” 2016. Web. 26 Jan 2021.

Vancouver:

Iman Z. Learning Topical Social Media Sensors for Twitter. [Internet] [Masters thesis]. Oregon State University; 2016. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/1957/59188.

Council of Science Editors:

Iman Z. Learning Topical Social Media Sensors for Twitter. [Masters Thesis]. Oregon State University; 2016. Available from: http://hdl.handle.net/1957/59188

University of Illinois – Urbana-Champaign

28. Shin, Jiho. Bioresorbable intracranial pressure sensors for clinical applications.

Degree: PhD, Chemical Engineering, 2018, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/101344

► Monitoring pressure in organ systems such as the brain, eye, and blood vessels form an essential diagnostic basis for assessment of patient health and progression… (more)

Subjects/Keywords: Bioresorbable; implantable sensors; intracranial pressure

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APA (6^th Edition):

Shin, J. (2018). Bioresorbable intracranial pressure sensors for clinical applications. (Doctoral Dissertation). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/101344

Chicago Manual of Style (16^th Edition):

Shin, Jiho. “Bioresorbable intracranial pressure sensors for clinical applications.” 2018. Doctoral Dissertation, University of Illinois – Urbana-Champaign. Accessed January 26, 2021. http://hdl.handle.net/2142/101344.

MLA Handbook (7^th Edition):

Shin, Jiho. “Bioresorbable intracranial pressure sensors for clinical applications.” 2018. Web. 26 Jan 2021.

Vancouver:

Shin J. Bioresorbable intracranial pressure sensors for clinical applications. [Internet] [Doctoral dissertation]. University of Illinois – Urbana-Champaign; 2018. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/2142/101344.

Council of Science Editors:

Shin J. Bioresorbable intracranial pressure sensors for clinical applications. [Doctoral Dissertation]. University of Illinois – Urbana-Champaign; 2018. Available from: http://hdl.handle.net/2142/101344

Stellenbosch University

29. Van Wyk, Carel. Markerless augmented reality on ubiquitous mobile devices with integrated sensors.

Degree: Electrical and Electronic Engineering, 2011, Stellenbosch University

URL: http://hdl.handle.net/10019.1/6790

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Thesis (MScEng (Electrical and Electronic Engineering)) – University of Stellenbosch, 2011.

ENGLISH ABSTRACT: The computational power of mobile smart-phone devices are ever increasing and high-end phones… (more)

▼

Thesis (MScEng (Electrical and Electronic Engineering)) – University of Stellenbosch, 2011.

ENGLISH ABSTRACT: The computational power of mobile smart-phone devices are ever increasing and high-end phones become more popular amongst consumers every day. The technical speci cations of a high-end smart-phone today rivals those of a home computer system of only a few years ago. Powerful processors, combined with cameras and ease of development encourage an increasing number of Augmented Reality (AR) researchers to adopt mobile smart-phones as AR platform. Implementation of marker-based Augmented Reality systems on mobile phones is mostly a solved problem. Markerless systems still o er challenges due to increased processing requirements. Some researchers adopt purely computer vision based markerless tracking methods to estimate camera pose on mobile devices. In this thesis we propose the use of a hybrid system that employs both computer vision and integrated sensors present in most new smartphones to facilitate pose estimation. We estimate three of the six degrees of freedom of pose using integrated sensors and estimate the remaining three using feature tracking. A proof of concept hybrid system is implemented as part of this thesis.

AFRIKAANSE OPSOMMING: Die berekeningskrag van nuwe-generasie selfone neem elke dag toe en kragtige "slim-fone" word al hoe meer populêr onder verbruikers. Die tegniese spesifikasies van 'n nuwe slim-foon vandag is vergelykbaar met die van 'n persoonlike rekenaar van slegs 'n paar jaar gelede. Die kombinasie van kragtige verwerkers, kameras en die gemaklikheid waarmee programmatuur op hierdie toestelle ontwikkel word, maak dit 'n aantreklike ontwikkelingsplatform vir navorsers in Toegevoegde Realiteit. Die implimentering van 'n merker-gebaseerde Toegevoegde Realiteitstelsel op selfone is 'n probleem wat reeds grotendeels opgelos is. Merker-vrye stelsels, aan die ander kant, bied steeds interessante uitdagings omdat hulle meer prosesseringskrag vereis. 'n Paar navorsers het reeds rekenaarvisie-gebaseerde merker-vrye stelsels aangepas om op selfone te funksioneer. In hierdie tesis stel ons die ontwikkeling voor van 'n hibriede stelsel wat gebruik maak van rekenaarvisie sowel as geintegreerde sensore in die foon om die berekening van kamera-orientasie te vergemaklik. Ons gebruik geintegreerde sensore om drie uit ses vryheidsgrade van orientasie te bereken, terwyl die oorblywende drie met behulp van rekenaarvisie-tegnieke bepaal word. 'n Prototipe stelsel is ontwikkel as deel van hierdie tesis.

Advisors/Committee Members: Engelbrecht, H. A., University of Stellenbosch. Faculty of Engineering. Dept. of Electrical and Electronic Engineering..

Subjects/Keywords: Electronic engineering; Integrated sensors

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Van Wyk, C. (2011). Markerless augmented reality on ubiquitous mobile devices with integrated sensors. (Thesis). Stellenbosch University. Retrieved from http://hdl.handle.net/10019.1/6790

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Van Wyk, Carel. “Markerless augmented reality on ubiquitous mobile devices with integrated sensors.” 2011. Thesis, Stellenbosch University. Accessed January 26, 2021. http://hdl.handle.net/10019.1/6790.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Van Wyk, Carel. “Markerless augmented reality on ubiquitous mobile devices with integrated sensors.” 2011. Web. 26 Jan 2021.

Vancouver:

Van Wyk C. Markerless augmented reality on ubiquitous mobile devices with integrated sensors. [Internet] [Thesis]. Stellenbosch University; 2011. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/10019.1/6790.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Van Wyk C. Markerless augmented reality on ubiquitous mobile devices with integrated sensors. [Thesis]. Stellenbosch University; 2011. Available from: http://hdl.handle.net/10019.1/6790

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Texas A&M University

30. Bobadilla Llerena, Alfredo Douglas. On The Assembly of Nanodevices.

Degree: PhD, Electrical Engineering, 2014, Texas A&M University

URL: http://hdl.handle.net/1969.1/154242

► Carbon nanostructures are 1D and 2D materials with potential to enable new markets in the electronic industry due to their novel properties which have been… (more)

▼ Carbon nanostructures are 1D and 2D materials with potential to enable new markets in the electronic industry due to their novel properties which have been recognized recently with the awarding of two Nobel Prizes in physics. But their very small size constitutes a new challenge in the manufacturing industry. We adapt molecular simulation tools and microfabrication techniques to enable the analysis of different scenarios on the assembly and characterization of carbon-based nanodevices. In an in silico experiment, by using molecular dynamics we analyze the outcome of bombarding carbon nanotube with argon ions, we find that for very high energies the type of defect created is almost exclusively single vacancy which is important in the development of spin-based electronics. An electric field can selectively guide nanoparticles in liquid media. We are able to guide the positioning of carbon nanotubes suspended in a four-electrode configuration; and after inducing an electrical breakdown event in a parallel array of nanotube devices we find a strong nonlinear electrical characteristic. Combining carbon nanostructures with DNA molecules offers the possibility of exploiting the chemical sensitivity of DNA and transducing it in an electrical signal. By using molecular dynamics, we predict a stable structure for a non-covalent DNA junction; we explore two different cases, with carbon nanotube or graphene as interface electrodes. Electronic structure calculations predict the DNA electronic structure is coupled to the carbon electron nano devices and would allow sensing of a chemical environment. In the field of drug-delivery, biological barriers and the immune system constitute challenges for the effective delivery of a drug to targeted areas of the human organism. By using molecular dynamics, we predict the structure and stability of maximum PEGylated carbon nanotube and predict it is in the nano-sized regime (~40 nm) which is an important requirement in the effective delivery of drugs. New fabrication techniques are required in the manufacturing of carbon nano devices. We fabricate fluidic devices and analyze in a novel configuration the electrochemical response of graphene ribbons. We find this device promising for detecting very low level of europium in liquid solution. Advisors/Committee Members: Seminario, Jorge M (advisor), Akbulut, Mustafa (committee member), Kish, Laszlo (committee member), Su, Chin (committee member).

Subjects/Keywords: nano carbon assembly sensors

Record Details Similar Records Cite « Share

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Bobadilla Llerena, A. D. (2014). On The Assembly of Nanodevices. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/154242

Chicago Manual of Style (16^th Edition):

Bobadilla Llerena, Alfredo Douglas. “On The Assembly of Nanodevices.” 2014. Doctoral Dissertation, Texas A&M University. Accessed January 26, 2021. http://hdl.handle.net/1969.1/154242.

MLA Handbook (7^th Edition):

Bobadilla Llerena, Alfredo Douglas. “On The Assembly of Nanodevices.” 2014. Web. 26 Jan 2021.

Vancouver:

Bobadilla Llerena AD. On The Assembly of Nanodevices. [Internet] [Doctoral dissertation]. Texas A&M University; 2014. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/1969.1/154242.

Council of Science Editors:

Bobadilla Llerena AD. On The Assembly of Nanodevices. [Doctoral Dissertation]. Texas A&M University; 2014. Available from: http://hdl.handle.net/1969.1/154242

Open Access Theses and Dissertations