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Hydrodynamic effects on the energy transfer from dipoles to metal slab

Brown, Daniel and Deng, Hai-Yao ORCID: https://orcid.org/0000-0001-6065-483X 2021. Hydrodynamic effects on the energy transfer from dipoles to metal slab. The Journal of Chemical Physics 155 (11) , 114109. 10.1063/5.0062708

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Abstract

A systematic study of nonlocal and size effects on the energy transfer of a dipole (e.g., a molecule or a quantum dot) induced by the proximity of a metal slab is presented. Nonlocal effects are accounted for using the hydrodynamic model (HDM). We derive a general relation that connects the energy transfer rate to the linear charge density–density response function of the slab. This function is explicitly evaluated for the HDM and the local Drude model. We show that a thin metal slab can support a series of higher-frequency surface plasma wave (SPW) modes in addition to the normal SPW modes, thanks to the nonlocal effects. These modes markedly alter the response and the energy transfer process, as revealed in the structure of the energy transfer rate in the parameter space. Our findings are important for applications such as the recently developed metal-induced energy transfer imaging, which relies on accurate modeling of the energy transfer rate.

Item Type: Article
Date Type: Published Online
Status: Published
Schools: Physics and Astronomy
Publisher: American Institute of Physics
ISSN: 0021-9606
Date of First Compliant Deposit: 17 September 2021
Date of Acceptance: 29 August 2021
Last Modified: 28 Nov 2022 02:07
URI: https://orca.cardiff.ac.uk/id/eprint/144264

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