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Recent Patents on Nanotechnology

Editor-in-Chief

ISSN (Print): 1872-2105
ISSN (Online): 2212-4020

Recent Progress in Fabrication of Anisotropic Nanostructures for Surface- Enhanced Raman Spectroscopy

Author(s): Teng Qiu, Wenjun Zhang and Paul K. Chu

Volume 3, Issue 1, 2009

Page: [10 - 20] Pages: 11

DOI: 10.2174/187221009787003357

Price: $65

Abstract

Surface-enhanced Raman scattering (SERS) is recognized as one of the most sensitive spectroscopic tools offering highly sensitive chemical and biological detection. The fact that particle plasmon allows direct coupling of light to resonant electron plasmon oscillation has spurred tremendous efforts in the design and fabrication of highly SERSactive substrates in nanostructured films and metallic nanoparticles. Theoretical studies have shown that symmetry breaking allows for more complex plasmon propagation, potentially leading to more intense electromagnetic field generation along the structure and in gaps formed between these materials. Anisotropic metallic nanostructures have all of the characteristics that make them excellent candidates as SERS substrates. Thus, SERS is expected from anisotropic materials. This review focuses on the progress and advances in the design and fabrication of anisotropic nanostructures for SERS, with an emphasis on future challenges.

Keywords: Surface-enhanced Raman scattering, surface plasmon resonance, anisotropic nanostructures, nanorods, nanowires, fractals, nanoprisms, noble metals


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