Nano-patterning methods including: (1) patterning of nanophotonic structures at optical fiber tip for refractive index sensing and (2) plasmonic crystal incorporating graphene oxide gas sensor for detection of volatile organic compounds

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United States of America

PATENT NO 12174530
SERIAL NO

16946028

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A technique, and its applications, for high resolution, rapid, and simple nanopatterning. The general method has been demonstrated in several forms and applications. One is patterning nanophotonic structures at an optical fiber tip for refractive index sensing. Another is patterning nanoresonator structures on a sensor substrate for plasmonic effect related detection of VOCs. In the latter example, a graphene oxide coated plasmonic crystal as a gas sensor capable of identifying different gas species using an array of such structures. By coating the surface of multiple identical plasmonic crystals with different thicknesses of Graphene-Oxide (GO) layer, the effective refractive index of the GO layer on each plasmonic crystal is differently modulated when exposed to a specific gas. Identification of various gas species is accomplished using pattern recognition algorithm.

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IOWA STATE UNIVERSITY RESEARCH FOUNDATION INCAMES IA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dong, Liang Ames, US 149 3190
Kumar, Ratnesh Ames, US 12 138
Tabassum, Shawana Ames, US 3 12

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