Raman sensing of vapours and liquids in porous silicon

被引：0

作者：

Sirleto, L ^{[1
]}

Ferrara, MA ^{[1
]}

Moretti, L ^{[1
]}

Rossi, AM ^{[1
]}

Santamato, E ^{[1
]}

Rendina, I ^{[1
]}

机构：

[1] CNR, Ist Microelettron & Microsistemi, I-80131 Naples, Italy

来源：

PHOTONIC MATERIALS, DEVICES, AND APPLICATIONS, PTS 1 AND 2 | 2005年 / 5840卷

关键词：

Raman scattering; porous silicon; optical sensing;

D O I：

10.1117/12.608974

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Fluid-solid interfacial phenomena are a subject of much interest. In the adsorption phenomena, the adsorbent experiences the action of the molecular forces inducing strains. In this paper, we experimentally investigate adsorption phenomena in porous silicon microcavities by spontaneous Raman scattering. Polarised Raman spectra are measured in a backscattering configuration using a diode laser at 404 nm. We observe a reversible blue shift of the Raman spectra exposing a porous silicon multilayer to air saturated with vapor of pentane or iso-propanol. We ascribe the shift of the Raman spectra to the strain in porous silicon due to the adsorption in the pore walls.

引用

页码：758 / 765

页数：8

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