科研之友
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摘要
We report surface-enhanced Raman scattering (SERS) from a "sandwich" structure of two silver layers, in which a thin film of activated carbon is embedded. The first silver layer is prepared by electroless deposition on a non-conductive substrate, while the second one is electrodeposited on the adsorbed carbon powder. This "sandwich" does not only yield stable SERS signals from the carbon but also a strong additional enhancement (compared to SERS from simple carbon/silver or silver/carbon structures), stemming from a coupling of the two silver layers. The "sandwich" structure should be widely applicable since its preparation is very simple.
- 出版日期2007-2
