Print Email Facebook Twitter Reflectance-based two-dimensional TiO2 photonic crystal liquid sensors Title Reflectance-based two-dimensional TiO2 photonic crystal liquid sensors Author Huang, Y. Pandraud, G. Sarro, P.M. Faculty Electrical Engineering, Mathematics and Computer Science Department Microelectronics Date 2012-07-25 Abstract We propose and experimentally demonstrate a reflectance-based photonic crystal (PC) liquid sensor. The PC is made of two-dimensional TiO2 nanopillar arrays. Such a reflectance-based structure with large functional area not only simplifies the optical guiding but also enhances the sensor signal. A linear shift of reflectance peaks is found for liquids with refractive indices varying from 1.333 to 1.390 at wavelength near 1.5 ?m. Excellent agreement between measured values and the generated reflectance model at a fixed wavelength is obtained, indicating the high potential of these PC-based liquid sensors for biological and environmental applications. To reference this document use: http://resolver.tudelft.nl/uuid:e141f0a3-0311-4cf4-afb9-921a721bfab6 DOI https://doi.org/10.1364/OL.37.003162 Publisher Optical Society of America ISSN 0146-9592 Source http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-15-3162 Source Optics Letters, 37 (15), 2012 Part of collection Institutional Repository Document type journal article Rights © 2012 Optical Society of America Files PDF Huang_2012.pdf 533.76 KB Close viewer /islandora/object/uuid:e141f0a3-0311-4cf4-afb9-921a721bfab6/datastream/OBJ/view