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Title: High-density metallic nanogaps fabricated on solid substrates used for surface enhanced Raman scattering
Authors: Lu, Gang
Li, Hai
Wu, Shixin
Chen, Peng
Zhang, Hua
Issue Date: 2012
Source: Lu, G., Li, H., Wu, S., Chen, P., & Zhang, H. (2012). High-density metallic nanogaps fabricated on solid substrates used for surface enhanced Raman scattering. Nanoscale, 4(3), 860-863.
Series/Report no.: Nanoscale
Abstract: The Raman signal of adsorbed molecules can be significantly enhanced by utilizing metallic structures with high-density Raman hot spots used as surface enhanced Raman scattering (SERS) substrates. In this work, we develop a simple, convenient and tunable method to fabricate high-density Ag or Au nanogaps on Si wafers. These nanogaps can serve as Raman hot spots, leading to dramatic enhancement of the Raman signal. The high-density nanogaps can be formed by repeating the electroless deposition of Ag NPs (or Au NPs) and coating of p-aminothiophenol (PATP, a Raman probe) on the deposited Ag NPs (or Au NPs) through the self-assembly process. After removal of PATP by O2 plasma, the as-fabricated SERS substrate can be reused for the detection of other molecules.
ISSN: 2040-3364
DOI: 10.1039/c1nr10997a
Rights: © 2012 The Royal Society of Chemistry.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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