Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 100, Issue 1-2, Pages 168-172Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2003.12.044
Keywords
porous silicon; optical sensors; microcavities; low-dimensional silicon structure
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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.
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