Porous silicon microcavities for optical hydrocarbons detection

被引：45

作者：

De Stefano, L

Moretti, L

Rendina, I

Rossi, AM

机构：

[1] IMM, Natl Res Council, I-80131 Naples, Italy

[2] Univ Calabria, DEIS, I-87036 Arcavacata Di Rende, Italy

[3] Ist Elettrotecnico Nazl Galileo Ferraris, Turin, Italy

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 2003年 / 104卷 / 02期

关键词：

porous silicon; optical sensors; microcavities; low-dimensional silicon structure;

D O I：

10.1016/S0924-4247(03)00057-8

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Large, repeatable and selective red-shifts in the reflectivity spectra of porous silicon microcavities (PSMs) have been registered after exposure to vapour or dip into liquid aliphatic hydrocarbons with different molecular weights. The shift in the resonant peak of the optical microcavity is due to average refractive index changes, induced by capillary condensation of the organic species into the silicon pores. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：179 / 182

页数：4

共 12 条

[1] Novel liquid sensor based on porous silicon optical waveguides [J].