Abstract:
:We report on a novel electrically tunable hybrid graphene-gold Fano resonator. The proposed metamaterial consists of a square graphene patch and a square gold frame. The destructive interference between the narrow- and broadband dipolar surface plasmons, which are induced respectively on the surfaces of the graphene patch and the gold frame, leads to the plasmonic equivalent of electromagnetically induced transparency (EIT). The response of the metamaterial is polarization independent due to the symmetry of the structure and its spectral features are shown to be highly controllable by changing a gate voltage applied to the graphene patch. Additionally, effective group index of the device is retrieved and is found to be very high within the EIT window suggesting its potential use in slow light applications. Potential outcomes such as high sensing ability and switching at terahertz frequencies are demonstrated through numerical simulations with realistic parameters.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Amin M,Farhat M,Baǧcı Hdoi
10.1038/srep02105subject
Has Abstractpub_date
2013-01-01 00:00:00pages
2105issn
2045-2322pii
srep02105journal_volume
3pub_type
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