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Proceedings Paper

Size-dependent quantum dynamical influence of metal nanoparticles on surface plasmon resonance
Author(s): Donghun Kang; Donghyun Kim; Eunji Sim
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Paper Abstract

We present a description of surface plasmon resonance (SPR) with quantum dynamical simulations based on the path integral method. SPR represents the excitation of surface plasmons (SPs), i.e., collective oscillations of conduction electrons in a metal film, usually created by the plane-polarized visible light. In the classical description, the momentum matching between incident photons and SPs allows the energy of the incident photons to be absorbed into exciting SPs and to form evanescent waves on the metallic thin film surface. While SPR has been understood through classical approaches using Maxwell's equations, extremely small nanoparticles coupled with SPs induces electromagnetic field enhancement often called localized SPR (LSPR) that is classically not well understood. Use of such nanoparticles smaller than a few nanometers in size has made it imperative to consider quantum effects such as quantum size effect. We present a hybridized model to describe SPR/LSPR using quantum states that interact with a dissipative medium according to size-dependent absorption spectra of nanoparticles.

Paper Details

Date Published: 2 February 2007
PDF: 8 pages
Proc. SPIE 6479, Quantum Sensing and Nanophotonic Devices IV, 64791Q (2 February 2007); doi: 10.1117/12.701769
Show Author Affiliations
Donghun Kang, Yonsei Univ. (South Korea)
Donghyun Kim, Yonsei Univ. (South Korea)
Eunji Sim, Yonsei Univ. (South Korea)

Published in SPIE Proceedings Vol. 6479:
Quantum Sensing and Nanophotonic Devices IV
Manijeh Razeghi; Gail J. Brown, Editor(s)

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