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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
31

Evaluation of a planar optic waveguide as a platform for evanescent field chemical sensor development /

Kuhn, Kevin John. January 1993 (has links)
Thesis (Ph. D.)--University of Washington, 1993. / Vita. Includes bibliographical references (leaves [183]-191).
32

Chemical sensing applications of fiber optics /

Nagarajan, Anjana, January 1994 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1994. / Vita. Abstract. Includes bibliographical references (leaves 77-79). Also available via the Internet.
33

Development of CaZrO3-based hydrogen sensors with oxide reference electrodes for molten aluminum

Krishnan, Vivek Fergus, Jeffrey Wayne, January 2006 (has links) (PDF)
Dissertation (Ph.D.)--Auburn University, 2006. / Abstract. Vita. Includes bibliographic references.
34

Mathematical modeling of the dynamics and production of biosensors /

Freeland, Angela Colleen, January 2000 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2000. / Vita. Includes bibliographical references (leaves 171-177). Available also in a digital version from Dissertation Abstracts.
35

Design, synthesis, and evaluation of fluorescent sensors for intracellular imaging of monovalent copper

Yang, Liuchun. January 2005 (has links)
Thesis (Ph. D.)--Chemistry and Biochemistry, Georgia Institute of Technology, 2006. / Fahrni, Christoph, Committee Chair ; Doyle, Donald, Committee Member ; Wilkinson, Angus, Committee Member ; Zhang, Z. John, Committee Member ; Radhakrishna, Harish, Committee Member.
36

Development of optical chemosensors for cation sensing

Cheung, Sin Man 01 January 2007 (has links)
No description available.
37

Electrical measurements and UV-assisted gas detection of ZnO nanowires

Chan, Ka Cheung January 2014 (has links)
No description available.
38

Saccharide sensing by affinity mass sensors.

January 1999 (has links)
by Lee Tin-wan. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1999. / Includes bibliographical references (leaves 79-84). / Abstracts in English and Chinese. / Chapter 1. --- Introduction / Chapter 1.1 --- Chemical sensors --- p.1 / Chapter 1.2 --- Quartz crystal microbalance --- p.5 / Chapter 1.3 --- Film immobilization technologies --- p.11 / Chapter 1.4 --- Research Outlines --- p.13 / Chapter 2. --- Saccharide detection by affinity mass sensor / Chapter 2.1 --- Concept of affinity mass sensor --- p.15 / Chapter 2.1.1 --- Affinity chromatography --- p.15 / Chapter 2.1.2 --- Basis of affinity mass sensor --- p.17 / Chapter 2.1.3 --- Saccharide sensing --- p.19 / Chapter 2.2 --- Experimental --- p.20 / Chapter 2.2.1 --- Flow-through cell --- p.21 / Chapter 2.2.2 --- QCA 917 quartz crystal analyzer --- p.21 / Chapter 2.2.3 --- Experimental setup --- p.25 / Chapter 2.2.4 --- Sensor fabrication --- p.29 / Chapter 2.2.5 --- Analysis procedures --- p.29 / Chapter 2.3 --- Results and Discussion --- p.30 / Chapter 2.3.1 --- Formation of boronate complex --- p.30 / Chapter 2.3.2 --- Response curve --- p.31 / Chapter 2.3.3 --- Ligand (APBA) immobilization --- p.32 / Chapter 2.3.4 --- Effect of various operating parameters --- p.35 / Chapter 2.3.5 --- Calibration and reproducibility --- p.38 / Chapter 2.3.6 --- Kinetics analysis --- p.39 / Chapter 2.3.7 --- Stability of sensor --- p.44 / Chapter 2.3.8 --- Determination of fructose in real samples --- p.44 / Chapter 2.3.9 --- Comparison with conventional saccharides sensors --- p.46 / Chapter 2.4 --- Summary --- p.47 / Chapter 3. --- Sol-gel fabrication of affinity mass sensor / Chapter 3.1 --- Principle of sol-gel method --- p.48 / Chapter 3.2 --- Encapsulation of organic molecules in sol-gel matrices --- p.51 / Chapter 3.3 --- Experimental --- p.53 / Chapter 3.3.1 --- Preparation of alkoxide solutions --- p.53 / Chapter 3.3.2 --- Film deposition on QCM --- p.55 / Chapter 3.3.3 --- Film characterization and surface analysis --- p.56 / Chapter 3.4 --- Results and Discussion --- p.57 / Chapter 3.4.1 --- Optimization of conditions for sol-gel process --- p.57 / Chapter 3.4.1.1 --- Choice of catalyst --- p.57 / Chapter 3.4.1.2 --- "H2O: TEOS ratio, R" --- p.59 / Chapter 3.4.1.3 --- Ligand loading --- p.60 / Chapter 3.4.1.4 --- Surface active agent --- p.60 / Chapter 3.4.1.5 --- Temperature --- p.61 / Chapter 3.4.1.6 --- Ageing and drying --- p.62 / Chapter 3.4.2 --- Characterization of APBA encapsulated film --- p.62 / Chapter 3.4.3 --- Performance of the sol-gel derived sensor --- p.65 / Chapter 3.4.3.1 --- Calibration --- p.65 / Chapter 3.4.3.2 --- Stability --- p.66 / Chapter 3.4.3.3 --- Selectivity --- p.68 / Chapter 3.4.4 --- Applicability of the sol-gel derived sensor --- p.69 / Chapter 3.4.5 --- Comparison between sensors fabricated via crosslinking method and the sol-gel method --- p.70 / Chapter 3.4.5.1 --- Surface uniformity --- p.70 / Chapter 3.4.5.2 --- Reproducibility in mass deposition --- p.72 / Chapter 3.4.5.3 --- Stability --- p.72 / Chapter 3.4.5.4 --- Sensitivity towards fructose standard --- p.73 / Chapter 3.4.5.5 --- Comparison of precision and accuracy --- p.73 / Chapter 3.5 --- Summary --- p.75 / Conclusion --- p.77 / References --- p.79 / Titles for tables --- p.85 / Captions for figures --- p.86 / Appendix I --- p.88 / Appendix II --- p.89 / Appendix III --- p.95
39

Affinity mass sensors: concept and applications. / CUHK electronic theses & dissertations collection

January 1997 (has links)
by Shao Bing. / Thesis (Ph.D.)--Chinese University of Hong Kong, 1997. / Includes bibliographical references (p. 111-122). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Mode of access: World Wide Web.
40

A multivariate statistical approach to identifying organic compounds using an oscillating plasma glow discharge detector for gas chromatography

Smith, Diane Lynn 04 April 1994 (has links)
An oscillating plasma glow discharge detector for gas chromatography is used to obtain fingerprint information about an analyte by combining both the average cell current and oscillation frequency signals. Five homologs each of the n-alkanes, 1-alkenes, 1-alkynes, 2-ketones and aldehydes are studied. Although triplicate determinations had some scatter due to noise, they showed clustering that allows several of these compounds to be distinguished from the others by using a two-dimensional plot of the ratios of frequency peak area to current peak area and frequency peak height to current peak height. Fingerprint identification information is improved by changing the cell pressure, applied voltage and electrode spacing. Changes in the discharge operating conditions produce changes in the analyte peak responses. The relative magnitudes of the analyte current and frequency peak responses also change with respect to each other under different discharge conditions. Unique fingerprints or patterns of responses are created for each analyte by changing the discharge operating conditions. The detector responses toward 10 organic compounds, representing seven different functional groups, are recorded under 56 different combinations of discharge conditions. The ratios of the frequency to current peak responses (heights and areas) for three of the 56 sets of conditions investigated provide enough information to distinguish between nine compounds. Principal component analysis and hierarchical cluster analysis, multivariate exploratory techniques, are used to observe natural clustering in the data. / Graduation date: 1994

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