Laser-Treated Substrate with Nanoparticles for Surface-Enhanced Raman Scattering
Wilner, Alan E.
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.
C. Lin et al., "Laser-Treated Substrate with Nanoparticles for Surface-Enhanced Raman Scattering," Optics Letters, Optical Society of America, Jan 2010.
The definitive version is available at http://dx.doi.org/10.1364/OL.35.000941
Mechanical and Aerospace Engineering
Electrical and Computer Engineering
Article - Journal
© 2010 Optical Society of America, All rights reserved.