Nanostructured Substrate with Nanoparticles Fabricated by Femtosecond Laser for Surface-enhanced Raman Scattering
Abstract
A simple and fast method to fabricate nanostructured substrates with silver nanoparticles over a large area for surface-enhanced Raman scattering (SERS) is reported. The method involves two steps: (1) dip the substrate into a silver nitrate solution for a few minutes, remove the substrate from the solution, and then air dry and (2) process the silver nitrate coated substrate by femtosecond (fs) laser pulses in air. The second step can create silver nanoparticles distributed on the nanostructured surface of the substrate by the photoreduction of fs multiphoton effects. This study demonstrates that an enhancement factor (EF) greater than 5×10⁵, measured by 10ˉ⁶ M Rhodamine 6G solution, can be achieved. The proposed technique can be used to integrate the SERS capability into a microchip for biomedical and chemical analysis. © 2010 Springer-Verlag.
Recommended Citation
Y. Han et al., "Nanostructured Substrate with Nanoparticles Fabricated by Femtosecond Laser for Surface-enhanced Raman Scattering," Applied Physics A: Materials Science and Processing, Springer-Verlag, Jan 2011.
The definitive version is available at https://doi.org/10.1007/s00339-010-6091-4
Department(s)
Electrical and Computer Engineering
Second Department
Mechanical and Aerospace Engineering
International Standard Serial Number (ISSN)
0947-8396
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2011 Springer-Verlag, All rights reserved.
Publication Date
01 Jan 2011
