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- Publisher Website: 10.1364/OE.21.031824
- Scopus: eid_2-s2.0-84891764849
- PMID: 24514777
- WOS: WOS:000329205200010
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Article: Tuning optical responses of metallic dipole nanoantenna using graphene
Title | Tuning optical responses of metallic dipole nanoantenna using graphene |
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Authors | |
Issue Date | 2013 |
Publisher | Optical 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? |
Abstract | Nanoantennas 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 Identifier | http://hdl.handle.net/10722/202884 |
ISSN | 2023 Impact Factor: 3.2 2023 SCImago Journal Rankings: 0.998 |
ISI Accession Number ID |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Ren, X | en_US |
dc.contributor.author | Sha, WEI | en_US |
dc.contributor.author | Choy, WCH | en_US |
dc.date.accessioned | 2014-09-19T10:09:14Z | - |
dc.date.available | 2014-09-19T10:09:14Z | - |
dc.date.issued | 2013 | en_US |
dc.identifier.citation | Optics Express, 2013, v. 21 n. 26, p. 31824-31829 | en_US |
dc.identifier.issn | 1094-4087 | - |
dc.identifier.uri | http://hdl.handle.net/10722/202884 | - |
dc.description.abstract | Nanoantennas 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.language | eng | en_US |
dc.publisher | Optical Society of America. The Journal's web site is located at http://www.opticsexpress.org | - |
dc.relation.ispartof | Optics Express | en_US |
dc.rights | Optics Express. Copyright © Optical Society of America. | - |
dc.rights | This 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.title | Tuning optical responses of metallic dipole nanoantenna using graphene | en_US |
dc.type | Article | en_US |
dc.identifier.email | Ren, X: xgren@eee.hku.hk | en_US |
dc.identifier.email | Sha, WEI: shawei@hku.hk | en_US |
dc.identifier.email | Choy, WCH: chchoy@eee.hku.hk | en_US |
dc.identifier.authority | Sha, WEI=rp01605 | en_US |
dc.identifier.authority | Choy, WCH=rp00218 | en_US |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1364/OE.21.031824 | - |
dc.identifier.pmid | 24514777 | - |
dc.identifier.scopus | eid_2-s2.0-84891764849 | - |
dc.identifier.hkuros | 238581 | en_US |
dc.identifier.volume | 21 | en_US |
dc.identifier.issue | 26 | - |
dc.identifier.spage | 31824 | en_US |
dc.identifier.epage | 31829 | en_US |
dc.identifier.isi | WOS:000329205200010 | - |
dc.publisher.place | United States | - |
dc.identifier.issnl | 1094-4087 | - |