شماره ركورد كنفرانس :
3926
عنوان مقاله :
A Novel Tunable Triple-Band Terahertz Absorber With Five Graphene Discs In one Unit Cell
پديدآورندگان :
Salyani Nima ns.salyani@gmail.com MSc. Student Department of Electrical and Computer Engineering University of Tabriz Tabriz, Iran, 5166616471 , Pourziad Ali ali_Pourziad@tabrizu.ac.ir Assistant Professor Department of Electrical and Computer Engineering University of Tabriz Tabriz, Iran, 5166616471 , Nikmehr Saeid nikmehr@tabrizu.ac.ir Professor Department of Electrical and Computer Engineering University of Tabriz Tabriz, Iran, 5166616471
كليدواژه :
graphene , light trapping , nanodisc , absorption , resonance , tunable
عنوان كنفرانس :
بيست و چهارمين كنفرانس مهندسي برق ايران
چكيده فارسي :
A high tunable terahertz graphene-based absorber which can operate in three band is presented. A patterned sheet with an array of graphene nano-disc can enhance absorption at the single resonance frequency. By insertion of five graphene discs in one unit cell, the performance of this absorber is improved. The five nano-discs have designed with different sizes for achieving multi-band operation. The effects of the radius and distance between the discs are studied. Good absorption, compact size and operation at the THz band are the major advantages of the introduced structure. Also the tunability is more than the state in which graphene based nano-disc, nano-ribbon, nanoring or cross-shaped is utilized.
