Type of Document	Master's Thesis
Author	Wooddell, Michael Gary
Author's Email Address	miwoodde@vt.edu
URN	etd-10072007-173444
Title	Increased Functionality Porous Optical Fiber Structures
Degree	Master of Science
Department	Materials Science and Engineering
Advisory Committee	Advisor Name Title Pickrell, Gary R. Committee Chair Kampe, Stephen L. Committee Member Suchicital, Carlos T. A. Committee Member
Keywords	electroless deposition organic photovoltaics nano-porous glass fiber optic sensors silicon chemical vapor deposition
Date of Defense	2007-09-19
Availability	unrestricted
Abstract A novel fiber optic structure, termed stochastic ordered hole fibers, has been developed that contains an ordered array of six hollow tubes surrounding a hollow core, combined with a nanoporous glass creating a unique fully three dimensional pore/fiber configuration. The objective of this study is to increase the functionality of these stochastic ordered hole fibers, as well as porous clad fibers, by integrating electronic device components such as conductors, and semiconductors, and optically active materials on and in the optical fiber pore structures. Conductive copper pathways were created on/in the solid core fibers using an electroless deposition technique. A chemical vapor deposition system was built in order to attempt the deposition of silicon in on the porous clad fibers. Additionally, conductive poly(3,4-ethylenedioxythiophene)- poly(styrene sulfonate) (PEDOT:PSS) and photoactive polymer blend poly(3- hexylthiophene) and 1-(3-methoxycarbonyl)-propyl-1-phenyl-)6,6)C61 (P3HT: PCBM) were deposited on the fibers using dip coating techniques. Quantum dots of Cadmium Selenide (CdSe) with particle sizes of ranging from 2- 10 nm were deposited in the stochastic ordered hole fibers. SEM and EDS analysis confirm that copper, polymer materials, and quantum dots were deposited in the pore structure and on the surface of the fibers. Finally, resistance measurements indicate that the electrolessly deposited copper coatings have sufficient conductivity to be used as metallic contacts or resistive heating elements.
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