Smart optical sensors for chemical substances based on porous silicon technology (Articolo in rivista)

Type
Label
  • Smart optical sensors for chemical substances based on porous silicon technology (Articolo in rivista) (literal)
Anno
  • 2004-01-01T00:00:00+01:00 (literal)
Alternative label
  • De Stefano L, Rendina N, Moretti L, Tundo S, Rossi AM (2004)
    Smart optical sensors for chemical substances based on porous silicon technology
    in Applied optics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • De Stefano L, Rendina N, Moretti L, Tundo S, Rossi AM (literal)
Pagina inizio
  • 167 (literal)
Pagina fine
  • 172 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 43 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR, Inst Microelect & Microsyst, I-80131 Naples, Italy; Univ Calabria, Dept Elect Comp Sci & Syst, I-87036 Arcavacata Di Rende, Italy; Ist Elettrotecnico Nazl Galileo Ferraris, Turin, Italy (literal)
Titolo
  • Smart optical sensors for chemical substances based on porous silicon technology (literal)
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. (literal)
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Autore CNR

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