Abbreviated Journal Title
Appl. Phys. Lett.
Keywords
Physics, Applied
Abstract
Cascaded field enhancement in silver dimer nanostructures is investigated using a dipole-dipole interaction model. Field enhancement spectra are evaluated as a function of the particle size difference and inter-particle spacing. We observe three distinct regimes of cascaded field enhancement: hindered cascading, multiplicative cascading, and the ultimate cascading limit, depending on the dimer interaction strength. Multiplicative cascading at small inter-particle spacing leads to analytic expressions for the ultimate internal and external field enhancement factors. For silver dimers in a host with index 1.5, we obtain a maximum internal field enhancement of 2.9 X 10(3), a factor of 75 larger than that of an isolated silver nanoparticle.
Journal Title
Applied Physics Letters
Volume
100
Issue/Number
18
Publication Date
1-1-2012
Document Type
Article
DOI Link
Language
English
First Page
4
WOS Identifier
ISSN
0003-6951
Recommended Citation
Toroghi, Seyfollah and Kik, Pieter G., "Cascaded plasmon resonant field enhancement in nanoparticle dimers in the point dipole limit" (2012). Faculty Bibliography 2010s. 3395.
https://stars.library.ucf.edu/facultybib2010/3395
Comments
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