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Proceedings Paper

Cascaded plasmon resonances multi-material nanoparticle trimers for extreme field enhancement
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Paper Abstract

Optical field enhancement in coupled plasmonic nanostructures has attracted significant attention because of field enhancement factors that significantly exceed those observed in isolated nanostructures. While previous studies demonstrated the existence of such cascaded field enhancement in coupled nanospheres with identical composition, this effect has not yet been studied in systems containing multiple materials. Here, we investigate the polarization-dependent optical response of multi-material trimer nanostructures composed of Au nanoparticles surrounded by two Ag nanoparticles as a function of nanoparticle size and inter-particle spacing. We observe field enhancement factors that are ten times larger than observed in isolated Au nanoparticles.

Paper Details

Date Published: 11 September 2013
PDF: 5 pages
Proc. SPIE 8809, Plasmonics: Metallic Nanostructures and Their Optical Properties XI, 88091M (11 September 2013); doi: 10.1117/12.2024709
Show Author Affiliations
S. Toroghi, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
Chatdanai Lumdee, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
Pieter G. Kik, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)


Published in SPIE Proceedings Vol. 8809:
Plasmonics: Metallic Nanostructures and Their Optical Properties XI
Mark I. Stockman, Editor(s)

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