Time-resolved sensing of chemical species in porous silicon optical microcavity

被引：34

作者：

De Stefano, L

Moretti, L

Rendina, I

Rossi, AM

机构：

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

[2] Univ Mediterranea Reggio Calabria, DIMET, I-89060 Reggio Di Calabria, Italy

[3] Ist Elettrotecn Nazl G Ferrais, Turin, Italy

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2004年 / 100卷 / 1-2期

关键词：

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

D O I：

10.1016/j.snb.2003.12.044

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Time-resolved measurements of red-shifts in the reflectivity spectra of porous silicon multi-layer microcavities, due to exposure to vapor of chemical species, give deep insight about the spatial concentration of the liquid condensed into the pores. Results clearly indicate that capillary condensation starts immediately and proceeds homogeneously all over the stack, yielding a uniform concentration distribution. (C) 2003 Elsevier B.V. All rights reserved.

引用

收藏

页码：168 / 172

页数：5

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