Silver nanocrystallites are obtained through immersion of porous silicon samples in AgNO3 solutions and a successive thermal annealing. The efficiency of nanostructures as surface enhanced Raman scattering (SERS) substrates is checked on cyanine-based dyes and horseradish peroxidase, evidencing detectable concentrations as low as 10-7 to 10-8 M. The substrate efficiency is strictly related to the Ag particle morphology, which could yield to either local surface plasmons (LSP) coupled to individual particles or to inter-particle short-range interaction.

Porous silicon as efficient surface enhanced Raman scattering (SERS) substrate.

Froner, Elena;Scarpa, Marina;
2008-01-01

Abstract

Silver nanocrystallites are obtained through immersion of porous silicon samples in AgNO3 solutions and a successive thermal annealing. The efficiency of nanostructures as surface enhanced Raman scattering (SERS) substrates is checked on cyanine-based dyes and horseradish peroxidase, evidencing detectable concentrations as low as 10-7 to 10-8 M. The substrate efficiency is strictly related to the Ag particle morphology, which could yield to either local surface plasmons (LSP) coupled to individual particles or to inter-particle short-range interaction.
2008
no. 22
F., Giorgis; E., Descrovi; A., Chiodoni; Froner, Elena; Scarpa, Marina; A., Venturello; F., Geobaldo
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/77122
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