Laser-Treated Substrate with Nanoparticles for Surface-Enhanced Raman Scattering

Editor(s)

Wilner, Alan E.

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 10to40-‰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.

Department(s)

Mechanical and Aerospace Engineering

Second Department

Electrical and Computer Engineering

International Standard Serial Number (ISSN)

0146-9592

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2010 Optical Society of America, All rights reserved.

Publication Date

01 Jan 2010

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