Journal
APPLIED SPECTROSCOPY REVIEWS
Volume 50, Issue 6, Pages 499-525Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/05704928.2014.923901
Keywords
SERS; noble metal; surface plasmon resonance; chemical detection; biosensing
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Funding
- Century Program (One-Hundred-Talent Program) of the Chinese Academy of Sciences
- National Natural Science Foundation of China [51471182, 51071167, 51102266]
- Instrument Developing Project of the Chinese Academy of Sciences [YZ200939]
- Shanghai Yangtze River Delta Science Project [11495810100]
- Shanghai Pujiang Program [10PJ1410700]
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Surface-enhanced Raman scattering (SERS) has attracted great interest due to its remarkable enhancement, excellent sensitivity, and the fingerprinting ability to produce distinct spectra for detecting various molecules. Noble metal nanomaterials have usually been employed as SERS-active substrates because of their strong SERS enhancement originated from their unique surface plasmon resonance (SPR) properties. Because the SPR property depends on metal material's size, shape, morphology, arrangement, and dielectric environment around metal nanostructures, the key to wider applications of SERS technique is to develop plasmon-resonant structures with novel geometries to enhance Raman signals and to control the periodic ordering of these structures over a large area to obtain reproducible Raman enhancement. This review presents a general view on the theory background of SERS effect and several basic concepts and focuses on recent progress in engineering metallic nanostructures with various morphologies using versatile methods for improving SERS properties. Their potential applications in the field of chemical detection and biological sensing are overviewed.
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