Imaging plasmon hybridization of fano resonances via hot-electron-mediated absorption mapping

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Title: Imaging plasmon hybridization of fano resonances via hot-electron-mediated absorption mapping
Authors: Simoncelli, S
Li, Y
Cortés, E
Maier, SA
Item Type: Journal Article
Abstract: The inhibition of radiative losses in dark plasmon modes allows storing electromagnetic energy more efficiently than in far-field excitable bright-plasmon modes. As such, processes benefiting from the enhanced absorption of light in plasmonic materials could also take profit of dark plasmon modes to boost and control nanoscale energy collection, storage, and transfer. We experimentally probe this process by imaging with nanoscale precision the hot-electron driven desorption of thiolated molecules from the surface of gold Fano nanostructures, investigating the effect of wavelength and polarization of the incident light. Spatially resolved absorption maps allow us to show the contribution of each element of the nanoantenna in the hot-electron driven process and their interplay in exciting a dark plasmon mode. Plasmon-mode engineering allows control of nanoscale reactivity and offers a route to further enhance and manipulate hot-electron driven chemical reactions and energy-conversion and transfer at the nanoscale.
Issue Date: 1-May-2018
Date of Acceptance: 25-Apr-2018
URI: http://hdl.handle.net/10044/1/59847
DOI: https://doi.org/10.1021/acs.nanolett.8b00302
ISSN: 1530-6984
Publisher: American Chemical Society
Start Page: 3400
End Page: 3406
Journal / Book Title: Nano Letters
Volume: 18
Issue: 6
Copyright Statement: © 2018 American Chemical Society. This document is the Accepted Manuscript version of a Published Work that appeared in final form in Nano Letters, after peer review and technical editing by the publisher. To access the final edited and published work see https://dx.doi.org/10.1021/acs.nanolett.8b00302.
Sponsor/Funder: Engineering & Physical Science Research Council (E
Funder's Grant Number: EP/M013812/1
Keywords: Science & Technology
Physical Sciences
Technology
Chemistry, Multidisciplinary
Chemistry, Physical
Nanoscience & Nanotechnology
Materials Science, Multidisciplinary
Physics, Applied
Physics, Condensed Matter
Chemistry
Science & Technology - Other Topics
Materials Science
Physics
Fano resonances
dark modes
hot-electrons
super-resolution
self-assembly
nanoscale precision
ELECTROMAGNETICALLY INDUCED TRANSPARENCY
MICROSCOPY REVEALS
NANOANTENNAS
SUPERRESOLUTION
NANOSTRUCTURES
METAMATERIALS
SPECTROSCOPY
LOCALIZATION
NANOCAVITIES
GENERATION
Fano resonances
dark modes
hot-electrons
nanoscale precision
self-assembly
super-resolution
Fano resonances
dark modes
hot-electrons
nanoscale precision
self-assembly
super-resolution
MD Multidisciplinary
Nanoscience & Nanotechnology
Publication Status: Published
Conference Place: United States
Online Publication Date: 2018-05-01
Appears in Collections:Physics
Experimental Solid State
Faculty of Natural Sciences



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