Analysis of Forster resonance energy transfer (FRET) in the vicinity of a charged metallic nanosphere via nonlocal optical response method

Andrews, David (2020) Analysis of Forster resonance energy transfer (FRET) in the vicinity of a charged metallic nanosphere via nonlocal optical response method. In: Photonics Europe, 2020-04-05 - 2020-04-09.

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Abstract

Forster Resonance Energy Transfer (FRET) is a major interparticle energy transfer mechanism used in a wide range of modern-day applications. Hence, enhancing the FRET rate by different mechanisms has been extensively studied in the literature. Obtaining Plasmonic enhanced FRET by placing a metal nanoparticle (MNP) in the vicinity of energy exchanging molecules is one such mechanism. Here we present a model to elucidate the effects of extraneous surface charges present on such a vicinal MNP on the FRET rate considering the nonlocal response of the MNP. This model is based on the well established extended Mie theory of Bohren and Hunt along with the idea of introducing an effective dielectric function for the charged MNP. Our results indicate that the excess surface charges will lead to a blueshift in the resonance frequency and greater enhancements in the FRET rate for both local and nonlocal response based methods. Furthermore, we propose potential substitutes for noble metals that are conventionally used in plasmonic enhanced FRET.

Item Type: Conference or Workshop Item (Paper)
Faculty \ School: Faculty of Science > School of Chemistry
Depositing User: LivePure Connector
Date Deposited: 28 May 2020 23:47
Last Modified: 07 Jul 2020 23:28
URI: https://ueaeprints.uea.ac.uk/id/eprint/75358
DOI: 10.1117/12.2554147

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