Laser-treated substrate with nanoparticles for surface-enhanced Raman scattering

Gheng Hsiang Lin, Lan Jiang, Jun Zhou, Hai Xiao, Shean Jen Chen, Hai Lung Tsai

Research output: Contribution to journalArticle

24 Scopus citations

Abstract

A rapid and simple approach to fabricate a large area of nanostructured substrate for surface-enhanced Raman scattering (SERS) is reported. Gold nanoparticles ranging from 10 to 40 nm in diameter uniformly distributed on a silicon substrate were obtained by annealing the gold film precoated on the silicon substrate with UV nanosenond (ns) laser pulses. The gold nanoparticles were formed by surface tension of the melted gold layer heated by ns laser pulses. The enhancement factor of the SERS substrate for Rhodamine 6G at 632.8 nm excitation was measured to be higher than 105. The proposed technique provides the opportunity to equip a functional microchip with SERS capability of high sensitivity and chemical stability.

Original languageEnglish (US)
Pages (from-to)941-943
Number of pages3
JournalOptics Letters
Volume35
Issue number7
DOIs
StatePublished - Apr 1 2010

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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