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Proceedings Paper

Phononic and phoxonic crystal slabs sensors
Author(s): Bahram Djafari Rouhani; Yan Pennec; Ralf Lucklum
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Paper Abstract

We study theoretically the potentiality of phononic and dual phononic-photonic (the so-called phoxonic) crystals for liquid sensing applications. We investigate the existence of well-defined features (peaks or dips) in the transmission spectra of acoustic and optical waves and evaluate their sensitivity to the sound velocity or refractive index of the liquid environment. Several geometries are considered that can be divided into two sets depending on the direction of propagation of the incident waves with respect to the phononic/photonic crystal, namely in-plane and out-of-plane propagation configurations. In the first configuration, we study the in-plane transmission through a two-dimensional (2D) crystal made of cylindrical holes in a Si substrate where one row of holes is filled with a liquid; possibly, the infiltrated holes may have a different radius than the normal holes. Another geometry we have studied consists of a periodic array of ridges on top of a thin Si membrane with incident waves parallel to the slab. In the out-of-plane configuration, we calculate the transmission between two solid substrates connected by a periodic array of pillars as well as the normally incident transmission upon a phoxonic crystal constituted by a periodic array of holes in a slab.

Paper Details

Date Published: 2 July 2012
PDF: 9 pages
Proc. SPIE 8425, Photonic Crystal Materials and Devices X, 84250O (2 July 2012); doi: 10.1117/12.922390
Show Author Affiliations
Bahram Djafari Rouhani, Institut d'Electronique, de Microélectronique, et de Nanotechnologie, CNRS (France)
Yan Pennec, Institut d'Electronique, de Microélectronique, et de Nanotechnologie, CNRS (France)
Ralf Lucklum, Institut d'Electronique, de Microélectronique, et de Nanotechnologie, CNRS (France)


Published in SPIE Proceedings Vol. 8425:
Photonic Crystal Materials and Devices X
Hernán Ruy Míguez; Sergei G. Romanov; Lucio Claudio Andreani; Christian Seassal, Editor(s)

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