Plasmonic Materials for Surface-Enhanced Sensing and Spectroscopy
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- 1 May 2005
- journal article
- Published by Springer Nature in MRS Bulletin
- Vol. 30 (5) , 368-375
- https://doi.org/10.1557/mrs2005.100
Abstract
Localized surface plasmon resonance (LSPR) excitation in silver and gold nanoparticles produces strong extinction and scattering spectra that in recent years have been used for important sensing and spectroscopy applications. This article describes the fabrication, characterization, and computational electrodynamics of plasmonic materials that take advantage of this concept.Two applications of these plasmonic materials are presented: (1) the development of an ultrasensitive nanoscale optical biosensor based on LSPR wavelength-shift spectroscopy and (2) the use of plasmon-sampled and wavelength-scanned surface-enhanced Raman excitation spectroscopy (SERES) to provide new insight into the electromagnetic-field enhancement mechanism.Keywords
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