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Spectroscopic studies of individual plasmon resonant nanoparticles

Mock, J. J. and Smith, D. R. and Barbic, M. and Oldenburg, S. J. and Schultz, D. A. and Schultz, S. (2003) Spectroscopic studies of individual plasmon resonant nanoparticles. In: Plasmonics: Metallic Nanostructures and Their Optical Properties. Proceedings of SPIE. No.5221. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, pp. 66-75. ISBN 9780819450944.

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We present a detailed description of the apparatus and techniques that we have utilized in our experimental study of individual plasmon resonant nanoparticles, along with a brief description of some major results. The apparatus consists of a spectroscopic system combined with a modified darkfield microscope, which enables the user to sequentially select individual resonant nanostructures in the microscopic field of view for spectroscopic study. Plasmon resonant nanostructures scatter light elastically, and typically have very large scattering cross-sections at their resonant optical wavelengths. In general, spectra can be obtained with acquisition times between .1 to 30 seconds, and color images can be captured using consumer digital color cameras. Spheres, tetrahedrons, and pentagonal platelets were fabricated using colloidal chemistry techniques. To produce highly anisotropic structures such as nanorods and "barbells", templates were used. Many of these nanostructures have been individually spectroscopically characterized, and their spectra correlated with their shape and size as determined by transmission electron microscope (TEM). The unique shape, size, composition, and dielectric surroundings of the individual plasmon resonant nanostructures determine their plasmon resonant behavior. We will show how the composition of the substrate on which the particles are immobilized and the dielectric of the surrounding medium have a significant effect on the plasmon resonance of the individual particles.

Item Type:Book Section
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Smith, D. R.0000-0002-4832-6208
Additional Information:© 2003 Society of Photo-Optical Instrumentation Engineers (SPIE). We would like to thank The National Center for Microscopy and Imaging Research (NCMIR) at UCSD, and Andy Pommer of the UCSD Physics Machine Shop. We would also like to acknowledge the support of the NSF DBI 9876651, NIH PHS HG0195901, the NIH SBIR R43GM62097, and the Lounsbery Foundation.
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Richard Lounsbery FoundationUNSPECIFIED
Subject Keywords:Plasmon resonance, nanoparticles, nanorods, silver enhancement, colloid, barbells
Series Name:Proceedings of SPIE
Issue or Number:5221
Record Number:CaltechAUTHORS:20190221-110521756
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Official Citation:Jack J. Mock, David R. Smith, Mladen Barbic, Steven J. Oldenburg, David A. Schultz, and Sheldon Schultz "Spectroscopic studies of individual plasmon resonant nanoparticles", Proc. SPIE 5221, Plasmonics: Metallic Nanostructures and Their Optical Properties, (28 October 2003); doi: 10.1117/12.506523;
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:93090
Deposited By: George Porter
Deposited On:28 Feb 2019 00:09
Last Modified:16 Nov 2021 16:55

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