Silver-based surface enhanced Raman scattering (SERS) substrate fabrication using nanolithography and site selective electroless deposition

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• 作者：Maria Laura Coluccio ; Gobind Das ; Federico Mecarini ; Francesco Gentile ; Antonella Pujia ; Luisa Bava ; Rossana Tallerico ; Patrizio C ; eloro ; Carlo Liberale ; Francesco De Angelis ; Enzo Di Fabrizio
• 关键词：Active SERS substrates ; Electroless deposition ; Silver ; Gold ; Nanoparticles ; Raman spectroscopy
• 刊名：Microelectronic Engineering
• 出版年：2009
• 出版时间：April-June 2009
• 年：2009
• 卷：86
• 期：4-6
• 页码：1085-1088
• 全文大小：377 K

文摘

In this work active SERS (surface enhanced Raman scattering) substrates are obtained by electron beam lithography and site selective electroless deposition technique. The combination of these two techniques allows to obtain well-defined metal structures, with a considerable advantage in Raman signal enhancement and in device reproducibility. The active-substrates are composed of silver, gold or a combination of the two metals, with different nanoparticles characteristics, obtained by varying metal deposition time. Rhodamine 6G was used as probe molecules for SERS experiments, showing that this new active substrate has high sensitivity to SERS response and allows to give Raman scattering also for diluted solutions (10⁻²⁰ M).