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Fabrication of Annealed Proton-Exchanged Waveguides Vertically Integrated with Chalcogenide WaveguidesMacik, Dwayne 2012 August 1900 (has links)
A key factor in the vertical integration of optical waveguide devices is the uniformity of the surface across which the coupling takes place. This thesis focuses on the fabrication of annealed proton-exchanged (APE) waveguides vertically integrated with chalcogenide waveguides. While titanium diffused waveguides form a surface bump that is approximately twice the size of the originally deposited film, an annealed proton-exchange process produces waveguides with surfaces having 90% less deformation.
The theory behind wave guiding devices is explored in this work along with the modeling and simulation of APE waveguides. The results obtained from the simulations are used to aid in the fabrication of these devices. A detailed review of the fabrication process of APE waveguides and chalcogenide waveguides is provided with results obtained from measurements. The first known coupling results for vertically integrated chalcogenide waveguides on top of annealed proton-exchanged waveguides are recorded. This work is concluded with future directions for this research including lowering losses by obtaining better simulation parameters and vertically integrating ring resonators along with ways in which to do this.
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Design and characterization of nonwoven fabrics for gas diffusion layer in polymer electrolyte membrane fuel cellIsikel, Lale, January 2007 (has links) (PDF)
Thesis (M.S.)--Auburn University, 2007. / Abstract. Vita. Includes bibliographic references (ℓ. 70-74)
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Development of polymer electrolyte membranes for fuel cells to be operated at high temperature and low humidityZhou, Zhen. January 2007 (has links)
Thesis (Ph. D.)--Chemistry and Biochemistry, Georgia Institute of Technology, 2007. / Committee Chair: Wong, C.P.; Committee Co-Chair: Liu, Meilin; Committee Member: Barefield, Kent; Committee Member: Collard, David; Committee Member: Fahrni, Christoph.
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Zeolite-based micro fuel cells /Kwan, Siu Ming. January 2008 (has links)
Thesis (Ph.D.)--Hong Kong University of Science and Technology, 2008. / Includes bibliographical references (p. 143-163).
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Modeling a proton exchange membrane fuel cell stackDeLashmutt, Timothy E. January 2008 (has links)
Thesis (M.S.)--Ohio University, November, 2008. / Title from PDF t.p. Includes bibliographical references.
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Composite proton exchange membranes for fuel cellsLiu, Ping. January 2006 (has links)
Thesis (Ph. D.)--Michigan State University. Dept. of Chemistry, 2006. / Title from PDF t.p. (viewed on June 19, 2009) Includes bibliographical references (p. 148-154). Also issued in print.
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Characterization of mass transport processes to enable PEM fuel cell start-up from low temperatures /Harris, Daniel I. January 2009 (has links)
Thesis (M.S.)--Rochester Institute of Technology, 2009. / Typescript. Includes bibliographical references (leaves 68-71).
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Investigation of CO tolerance in proton exchange membrane fuel cellsZhang, Jingxin. January 2004 (has links)
Thesis (Ph. D.)--Worcester Polytechnic Institute. / Keywords: kinetic modeling; electrocatalysis; CO tolerance; PEM fuel cells. Includes bibliographical references.
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Investigation of thermodynamic and transport properties of proton-exchange membranes in fuel cell applicationsChoi, Pyoungho. January 2004 (has links)
Thesis (M.S.)--Worcester Polytechnic Institute. / Keywords: Thermodynamics; Fuel Cell; Proton-exchange membranes; Proton Transport. Includes bibliographical references.
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Modeling and control of an automotive fuel cell thermal system /Nolan, John. January 2009 (has links)
Thesis (M.S.)--Rochester Institute of Technology, 2009. / Typescript. Includes bibliographical references (p. 93-95).
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