A tunable terahertz metamaterial absorber composed of elliptical ring graphene arrays with refractive index sensing application

• Published in: Results in physics Vol. 16; p. 103012
• Main Authors: Qi, Yunping, Zhang, Yu, Liu, Chuqin, Zhang, Ting, Zhang, Baohe, Wang, Liyuan, Deng, Xiangyu, Bai, Yulong, Wang, Xiangxian
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.03.2020; Elsevier
• Subjects: Finite difference time domain; Graphene; Metamaterial absorber; Surface plasmon resonance; Metamaterial absorber; Surface plasmon resonance; Graphene; Finite difference time domain

•Altering Fermi level from 0.2 eV to 0.8 eV, the maximum absorption increases from 10.7% to 49.2%, improved by nearly 5 times, and experiences blueshifts. The maximum absorption is a remarkable high result compared to previous studies.•The variation of incident angle is sensitive to maximum absorpti...