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Proceedings Paper

Block copolymer assisted refractive index engineering of metal oxides for applications in optical sensing
Author(s): Zsolt L. Poole; Paul Ohodnicki; Michael Buric; Aidong Yan; Shaymaa Riyadh; Yuankun Lin; Kevin P. Chen
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Paper Abstract

We demonstrate that the refractive indices of important functional metal oxides (TiO2, SnO2, and ZnO) can be engineered “at will” for applications in photonics engineering. The tailoring of the refractive indices is accomplished by 3D nanostructuring in the sub-wavelength regime (50nm or less) using the method of block-copolymer templating combined with a low cost solution processing approach. Using this method, the index of refraction of the demonstrated metal oxides and their doped variants can be engineered to be as low as 1.25. We will present both numerical simulations and experimental data demonstrating the unrestricted integration of functional metal oxides with a D-shaped optical fiber for applications in chemical and biological sensing. Using the developed refractive index engineering scheme, we introduce a novel hydrogen sensor by integrating a palladium doped TiO2 nanomaterial with D-shaped optical fiber and provide sensor characterization up to 700°C for applications in the energy sector.

Paper Details

Date Published: 10 September 2014
PDF: 10 pages
Proc. SPIE 9161, Nanophotonic Materials XI, 91610P (10 September 2014); doi: 10.1117/12.2062092
Show Author Affiliations
Zsolt L. Poole, Univ. of Pittsburgh (United States)
Paul Ohodnicki, National Energy Technology Lab. (United States)
Michael Buric, National Energy Technology Lab. (United States)
Aidong Yan, Univ. of Pittsburgh (United States)
Shaymaa Riyadh, Univ. of Bagdhad (Iraq)
Yuankun Lin, Univ. of North Texas (United States)
Kevin P. Chen, Univ. of Pittsburgh (United States)

Published in SPIE Proceedings Vol. 9161:
Nanophotonic Materials XI
Stefano Cabrini; Gilles Lérondel; Adam M. Schwartzberg; Taleb Mokari, Editor(s)

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