Silver nanocrystal superlattice coating for molecular sensing by surface-enhanced Raman spectroscopy

Teng Qiu; Xuezhong Wu; Jian Shen; Paul Kim Ho Chu

doi:10.1063/1.2357548

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Silver nanocrystal superlattice coating for molecular sensing by surface-enhanced Raman spectroscopy

Article 2006 en

Abstract

1 min read

A nanotechnique to assemble silver nanocrystals and control the gaps precisely in the sub-10nm regime is demonstrated on an active coating exhibiting surface-enhanced Raman scattering (SERS). The silver nanocrystal superlattice coating boasts a high SERS enhancement factor, large dynamic range, and universal SERS activity. The observed SERS efficiency can be explained in terms of interparticle-coupling-induced Raman enhancement.

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