eprintid: 10072235
rev_number: 20
eprint_status: archive
userid: 608
dir: disk0/10/07/22/35
datestamp: 2019-04-15 11:04:41
lastmod: 2021-12-19 00:14:34
status_changed: 2019-04-15 11:04:41
type: article
metadata_visibility: show
creators_name: You, JW
creators_name: Panoiu, NC
title: Analysis of the interaction between classical and quantum plasmons via FDTD-TDDFT method
ispublished: pub
divisions: UCL
divisions: B04
divisions: C05
divisions: F46
keywords: Classical plasmon, quantum plasmon, multiphysics computation, FDTD, TDDFT
note: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
abstract: A powerful hybrid FDTD-TDDFT method is used to study the interaction between classical plasmons of a gold bowtie nanoantenna and quantum plasmons of graphene nanoflakes (GNFs) placed in the narrow gap of the nanoantenna. Due to the hot-spot plasmon of the bowtie nanoantenna, the localfield intensity in the gap increases significantly, so that the optical response of the GNF is dramatically enhanced. To study this interaction between classical and quantum plasmons, we decompose this multiscale and multiphysics system into two computational regions, a classical and a quantum one. In the quantum region, the quantum plasmons of the GNF are studied using the TDDFT method, whereas the FDTD method is used to investigate the classical plasmons of the bowtie nanoantenna. Our analysis shows that in this hybrid system the quantum plasmon response of a molecular-scale GNF can be enhanced by more than two orders of magnitude, when the frequencies of the quantum and classical plasmons are the same. This finding can be particularly useful for applications to molecular sensors and quantum optics.
date: 2019-03-27
date_type: published
official_url: https://doi.org/10.1109/JMMCT.2019.2906585
oa_status: green
full_text_type: other
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 1645837
doi: 10.1109/JMMCT.2019.2906585
lyricists_name: Panoiu, Nicolae-Coriolan
lyricists_name: You, Jianwei
lyricists_id: NPANO59
lyricists_id: JWYOU76
actors_name: Panoiu, Nicolae-Coriolan
actors_id: NPANO59
actors_role: owner
full_text_status: public
publication: IEEE Journal on Multiscale and Multiphysics Computational Techniques
volume: 4
pagerange: 111-118
issn: 2379-8793
citation:        You, JW;    Panoiu, NC;      (2019)    Analysis of the interaction between classical and quantum plasmons via FDTD-TDDFT method.                   IEEE Journal on Multiscale and Multiphysics Computational Techniques , 4    pp. 111-118.    10.1109/JMMCT.2019.2906585 <https://doi.org/10.1109/JMMCT.2019.2906585>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10072235/1/FDTD_TDDFT_JMMCT_Final.pdf