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Article: Switching terahertz waves with gate-controlled active graphene metamaterials

TitleSwitching terahertz waves with gate-controlled active graphene metamaterials
Authors
Issue Date2012
Citation
Nature Materials, 2012, v. 11, n. 11, p. 936-941 How to Cite?
AbstractThe extraordinary electronic properties of graphene provided the main thrusts for the rapid advance of graphene electronics. In photonics, the gate-controllable electronic properties of graphene provide a route to efficiently manipulate the interaction of photons with graphene, which has recently sparked keen interest in graphene plasmonics. However, the electro-optic tuning capability of unpatterned graphene alone is still not strong enough for practical optoelectronic applications owing to its non-resonant Drude-like behaviour. Here, we demonstrate that substantial gate-induced persistent switching and linear modulation of terahertz waves can be achieved in a two-dimensional metamaterial, into which an atomically thin, gated two-dimensional graphene layer is integrated. The gate-controllable light-matter interaction in the graphene layer can be greatly enhanced by the strong resonances of the metamaterial. Although the thickness of the embedded single-layer graphene is more than six orders of magnitude smaller than the wavelength (<λ/1,000,000), the one-atom-thick layer, in conjunction with the metamaterial, can modulate both the amplitude of the transmitted wave by up to 47% and its phase by 32.2° at room temperature. More interestingly, the gate-controlled active graphene metamaterials show hysteretic behaviour in the transmission of terahertz waves, which is indicative of persistent photonic memory effects. © 2012 Macmillan Publishers Limited. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/257113
ISSN
2017 Impact Factor: 39.235
2015 SCImago Journal Rankings: 21.395
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLee, Seung Hoon-
dc.contributor.authorChoi, Muhan-
dc.contributor.authorKim, Teun Teun-
dc.contributor.authorLee, Seungwoo-
dc.contributor.authorLiu, Ming-
dc.contributor.authorYin, Xiaobo-
dc.contributor.authorChoi, Hong Kyw-
dc.contributor.authorLee, Seung S.-
dc.contributor.authorChoi, Choon Gi-
dc.contributor.authorChoi, Sung Yool-
dc.contributor.authorZhang, Xiang-
dc.contributor.authorMin, Bumki-
dc.date.accessioned2018-07-24T08:58:52Z-
dc.date.available2018-07-24T08:58:52Z-
dc.date.issued2012-
dc.identifier.citationNature Materials, 2012, v. 11, n. 11, p. 936-941-
dc.identifier.issn1476-1122-
dc.identifier.urihttp://hdl.handle.net/10722/257113-
dc.description.abstractThe extraordinary electronic properties of graphene provided the main thrusts for the rapid advance of graphene electronics. In photonics, the gate-controllable electronic properties of graphene provide a route to efficiently manipulate the interaction of photons with graphene, which has recently sparked keen interest in graphene plasmonics. However, the electro-optic tuning capability of unpatterned graphene alone is still not strong enough for practical optoelectronic applications owing to its non-resonant Drude-like behaviour. Here, we demonstrate that substantial gate-induced persistent switching and linear modulation of terahertz waves can be achieved in a two-dimensional metamaterial, into which an atomically thin, gated two-dimensional graphene layer is integrated. The gate-controllable light-matter interaction in the graphene layer can be greatly enhanced by the strong resonances of the metamaterial. Although the thickness of the embedded single-layer graphene is more than six orders of magnitude smaller than the wavelength (<λ/1,000,000), the one-atom-thick layer, in conjunction with the metamaterial, can modulate both the amplitude of the transmitted wave by up to 47% and its phase by 32.2° at room temperature. More interestingly, the gate-controlled active graphene metamaterials show hysteretic behaviour in the transmission of terahertz waves, which is indicative of persistent photonic memory effects. © 2012 Macmillan Publishers Limited. All rights reserved.-
dc.languageeng-
dc.relation.ispartofNature Materials-
dc.titleSwitching terahertz waves with gate-controlled active graphene metamaterials-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1038/nmat3433-
dc.identifier.scopuseid_2-s2.0-84867887130-
dc.identifier.volume11-
dc.identifier.issue11-
dc.identifier.spage936-
dc.identifier.epage941-
dc.identifier.eissn1476-4660-
dc.identifier.isiWOS:000310434600016-

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