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Article: Tuning optical responses of metallic dipole nanoantenna using graphene

TitleTuning optical responses of metallic dipole nanoantenna using graphene
Authors
Issue Date2013
PublisherOptical Society of America. The Journal's web site is located at http://www.opticsexpress.org
Citation
Optics Express, 2013, v. 21 n. 26, p. 31824-31829 How to Cite?
AbstractNanoantennas play a fundamental role in the nanotechnology due to their capabilities to confine and enhance the light through converting the localized fields to propagating ones, and vice versa. Here, we theoretically propose a novel nanoantenna with the metal-insulator-graphene configuration where a graphene sheet dynamically controls the characteristics of a metallic dipole antenna in terms of near-field distribution, resonance frequency, bandwidth, radiation pattern, etc. Our results show that by modifying dispersion relation of the graphene sheet attached to the insulator through tuning chemical potentials, we can achieve strong mode couplings between the graphene sheet and the metallic nanoantenna on the top of the insulator. Interestingly, the in-phase and out-of-phase couplings between metallic plasmonics and graphene plasmonics not only split the single resonance frequency of the conventional metallic dipole antenna but also modify the near-field and far-field responses of the metal-graphene nanoantenna. This work is of a great help to design high-performance electrically-tunable nanoantennas applicable both in nano-optics and nano-electronics fields.
Persistent Identifierhttp://hdl.handle.net/10722/202884
ISSN
2015 Impact Factor: 3.148
2015 SCImago Journal Rankings: 2.186
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorRen, Xen_US
dc.contributor.authorSha, WEIen_US
dc.contributor.authorChoy, WCHen_US
dc.date.accessioned2014-09-19T10:09:14Z-
dc.date.available2014-09-19T10:09:14Z-
dc.date.issued2013en_US
dc.identifier.citationOptics Express, 2013, v. 21 n. 26, p. 31824-31829en_US
dc.identifier.issn1094-4087-
dc.identifier.urihttp://hdl.handle.net/10722/202884-
dc.description.abstractNanoantennas play a fundamental role in the nanotechnology due to their capabilities to confine and enhance the light through converting the localized fields to propagating ones, and vice versa. Here, we theoretically propose a novel nanoantenna with the metal-insulator-graphene configuration where a graphene sheet dynamically controls the characteristics of a metallic dipole antenna in terms of near-field distribution, resonance frequency, bandwidth, radiation pattern, etc. Our results show that by modifying dispersion relation of the graphene sheet attached to the insulator through tuning chemical potentials, we can achieve strong mode couplings between the graphene sheet and the metallic nanoantenna on the top of the insulator. Interestingly, the in-phase and out-of-phase couplings between metallic plasmonics and graphene plasmonics not only split the single resonance frequency of the conventional metallic dipole antenna but also modify the near-field and far-field responses of the metal-graphene nanoantenna. This work is of a great help to design high-performance electrically-tunable nanoantennas applicable both in nano-optics and nano-electronics fields.en_US
dc.languageengen_US
dc.publisherOptical Society of America. The Journal's web site is located at http://www.opticsexpress.org-
dc.relation.ispartofOptics Expressen_US
dc.rightsOptics Express. Copyright © Optical Society of America.-
dc.rightsThis paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-21-26-31824. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.titleTuning optical responses of metallic dipole nanoantenna using grapheneen_US
dc.typeArticleen_US
dc.identifier.emailRen, X: xgren@eee.hku.hken_US
dc.identifier.emailSha, WEI: shawei@hku.hken_US
dc.identifier.emailChoy, WCH: chchoy@eee.hku.hken_US
dc.identifier.authoritySha, WEI=rp01605en_US
dc.identifier.authorityChoy, WCH=rp00218en_US
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1364/OE.21.031824-
dc.identifier.pmid24514777-
dc.identifier.hkuros238581en_US
dc.identifier.volume21en_US
dc.identifier.issue26-
dc.identifier.spage31824en_US
dc.identifier.epage31829en_US
dc.identifier.isiWOS:000329205200010-
dc.publisher.placeUnited States-

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