Kolobov I G, Euler William B, Levitsky I A
Department of Chemistry, University of Rhode Island, Kingston, Rhode Island 02881, USA.
Appl Opt. 2010 Jan 1;49(1):137-41. doi: 10.1364/AO.49.000137.
Mesoporous silicon (PSi) microcavities (MC) based on one-dimensional photonic crystals have been studied as optical sensors for relative humidity (RH). Oxidized PSi modified the structure of the MC such that the spectral position of the MC resonance peak depended on the humidity. A spectral shift of the MC resonance peak of up to 6 nm to longer wavelengths was observed as the RH increased from 20% to 85%. Ultrasound affects the MC peak spectral position in the reverse direction as a result of water removal from mesoporous structure. This effect can be used for the stabilization of the peak spectral position for an optical interconnect and fast recovery of the optical gas sensors.
基于一维光子晶体的介孔硅（PSi）微腔（MC）已被研究用作相对湿度（RH）的光学传感器。氧化的PSi改变了MC的结构，使得MC共振峰的光谱位置取决于湿度。当RH从20%增加到85%时，观察到MC共振峰的光谱向更长波长方向移动高达6 nm。由于从介孔结构中去除水分，超声以相反的方向影响MC峰的光谱位置。这种效应可用于稳定光学互连的峰光谱位置以及光学气体传感器的快速恢复。
