TY - JOUR
T1 - Self-Affine Graphene Metasurfaces for Tunable Broadband Absorption
AU - Wu, Pin Chieh
AU - Papasimakis, Nikitas
AU - Tsai, Din Ping
N1 - Publisher Copyright:
© 2016 American Physical Society.
PY - 2016/10/28
Y1 - 2016/10/28
N2 - Graphene has emerged as a promising platform for THz metasurfaces supporting electrically tunable deep-subwavelength plasmonic excitations. Here, we introduce a broadband graphene metasurface based on the Hilbert curve, a continuous, space-filling fractal. We demonstrate the enhancement of graphene absorption over a broad frequency band (0.5-60 THz) with an average absorption level exceeding 20%. Owing to the continuous nature of the metasurface patterns, both the absorption level and the bandwidth can be controlled electrically by varying the graphene charge-carrier concentration.
AB - Graphene has emerged as a promising platform for THz metasurfaces supporting electrically tunable deep-subwavelength plasmonic excitations. Here, we introduce a broadband graphene metasurface based on the Hilbert curve, a continuous, space-filling fractal. We demonstrate the enhancement of graphene absorption over a broad frequency band (0.5-60 THz) with an average absorption level exceeding 20%. Owing to the continuous nature of the metasurface patterns, both the absorption level and the bandwidth can be controlled electrically by varying the graphene charge-carrier concentration.
UR - http://www.scopus.com/inward/record.url?scp=84994218572&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84994218572&partnerID=8YFLogxK
U2 - 10.1103/PhysRevApplied.6.044019
DO - 10.1103/PhysRevApplied.6.044019
M3 - Article
AN - SCOPUS:84994218572
SN - 2331-7019
VL - 6
JO - Physical Review Applied
JF - Physical Review Applied
IS - 4
M1 - 044019
ER -