Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Smart optical sensors for chemical substances based on porous silicon technology

Not Accessible

Your library or personal account may give you access

Abstract

A simple geometry optical sensor based on porous silicon technology is theoretically and experimentally studied. We expose some porous silicon optical microcavities with different porous structures to several substances of environmental interest: Very large red shifts in the single transmission peak in the reflectivity spectrum due to changes in the average refractive index are observed. The phenomenon can be ascribed to capillary condensation of vapor phases in the silicon pores. We numerically compute the peak shifts as a function of the liquid volume fraction condensed into the stack by using the Bruggeman theory. The results presented are promising for vapor and liquid detection and identification.

© 2004 Optical Society of America

Full Article  |  PDF Article
More Like This
Diffractive optical elements with porous silicon layers

Michael A. Golub, Tanya Hutter, and Shlomo Ruschin
Appl. Opt. 49(8) 1341-1349 (2010)

Optical humidity sensing and ultrasound effect for mesoporous silicon one-dimensional photonic crystals

I. G. Kolobov, William B. Euler, and I. A. Levitsky
Appl. Opt. 49(1) 137-141 (2010)

Protease detection using a porous silicon based Bloch surface wave optical biosensor

Hong Qiao, Bin Guan, J. Justin Gooding, and Peter J Reece
Opt. Express 18(14) 15174-15182 (2010)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (8)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (3)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved