Eur. Phys. J. Appl. Phys.
Volume 79, Number 1, July 2017
|Number of page(s)||7|
|Section||Physics of Organic Materials and Devices|
|Published online||30 May 2017|
Tunable multi-band absorption in metasurface of graphene ribbons based on composite structure
School of Information Engineering, Huangshan University, 245041 Huangshan, P.R. China
2 School of Mechanical and Electrical Engineering, Huangshan University, 245041 Huangshan, P.R. China
a e-mail: email@example.com
Revised: 1 December 2016
Accepted: 21 April 2017
Published online: 30 May 2017
A tunable multiband absorption based on a graphene metasurface of composite structure at mid-infrared frequency was investigated by the finite difference time domain method. The composite structure were composed of graphene ribbons and a gold-MgF2 layer which was sandwiched in between two dielectric slabs. The permittivity of graphene is discussed with different chemical potential to obtain tunable absorption. And the absorption of the composite structure can be tuned by the chemical potential of graphene at certain frequencies. The impedance matching was used to study the perfect absorption of the structure in our paper. The results show that multi-band absorption can be obtained and some absorption peaks of the composite structure can be tuned through the changing not only of the width of graphene ribbons and gaps, but also the dielectric and the chemical potential of graphene. However, another peak was hardly changed by parameters due to a different resonant mechanism in proposed structure. This flexibily tunable multiband absorption may be applied to optical communications such as optical absorbers, mid infrared stealth devices and filters.
© EDP Sciences, 2017
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.