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Proceedings Paper

Raman sensing of vapors and liquids in porous silicon
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Paper Abstract

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.

Paper Details

Date Published: 7 July 2005
PDF: 8 pages
Proc. SPIE 5840, Photonic Materials, Devices, and Applications, (7 July 2005); doi: 10.1117/12.608974
Show Author Affiliations
L. Sirleto, Istituto per la Microelettronica e Microsistemi, CNR (Italy)
M. A. Ferrara, Istituto per la Microelettronica e Microsistemi, CNR (Italy)
L. Moretti, Istituto per la Microelettronica e Microsistemi, CNR (Italy)
A. M. Rossi, Istituto Elettrotecnico Nazionale G. Ferraris (Italy)
E. Santamato, Univ. di Napoli Federico II (Italy)
I. Rendina, Istituto per la Microelettronica e Microsistemi (Italy)


Published in SPIE Proceedings Vol. 5840:
Photonic Materials, Devices, and Applications
Goncal Badenes; Derek Abbott; Ali Serpenguzel, Editor(s)

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