scholarly journals Dual-controlled broadband terahertz absorber based on graphene and Dirac semimetal

2020 ◽  
Vol 28 (9) ◽  
pp. 13884 ◽  
Author(s):  
Han Xiong ◽  
Qing Ji ◽  
Tahir Bashir ◽  
Fan Yang
Keyword(s):  
Terahertz Absorber ◽  
Dirac Semimetal ◽  
Broadband Terahertz

scholarly journals Dual-Tunable Broadband Terahertz Absorber Based on a Hybrid Graphene-Dirac Semimetal Structure

Micromachines ◽  
2020 ◽  
Vol 11 (12) ◽  
pp. 1096
Author(s):  
Jiali Wu ◽  
Xueguang Yuan ◽  
Yangan Zhang ◽  
Xin Yan ◽  
Xia Zhang
Keyword(s):  
Fermi Energy ◽  
Incident Angle ◽  
Normal Incidence ◽  
Surface Conductivity ◽  
Chemical Doping ◽  
Absorption Bandwidth ◽  
Terahertz Absorber ◽  
Dirac Semimetal ◽  
High Absorption ◽  
Broadband Terahertz

A dual-controlled tunable broadband terahertz absorber based on a hybrid graphene-Dirac semimetal structure is designed and studied. Owing to the flexible tunability of the surface conductivity of graphene and relative permittivity of Dirac semimetal, the absorption bandwidth can be tuned independently or jointly by shifting the Fermi energy through chemical doping or applying gate voltage. Under normal incidence, the device exhibits a high absorption larger than 90% over a broad range of 4.06–10.7 THz for both TE and TM polarizations. Moreover, the absorber is insensitive to incident angles, yielding a high absorption over 90% at a large incident angle of 60° and 70° for TE and TM modes, respectively. The structure shows great potential in miniaturized ultra-broadband terahertz absorbers and related applications.

scholarly journals Broadband terahertz absorber with tunable frequency and bandwidth by using Dirac semimetal and strontium titanate

2021 ◽  
Vol 29 (5) ◽  
pp. 7713
Author(s):  
Tong Wu ◽  
Yabin Shao ◽  
Shuai Ma ◽  
Guan Wang ◽  
Yachen Gao
Keyword(s):  
Strontium Titanate ◽  
Terahertz Absorber ◽  
Dirac Semimetal ◽  
Tunable Frequency ◽  
Broadband Terahertz

scholarly journals Broadband terahertz absorber realized by self-assembled multilayer glass spheres

2012 ◽  
Vol 20 (12) ◽  
pp. 13566 ◽  
Author(s):  
Dae-Seon Kim ◽  
Dong-Hyun Kim ◽  
Sehyun Hwang ◽  
Jae-Hyung Jang
Keyword(s):  
Terahertz Absorber ◽  
Glass Spheres ◽  
Self Assembled ◽  
Broadband Terahertz

Wide-range tunable, dual-band, background refractive index insensitive terahertz absorber based on graphene and Dirac semimetal

2021 ◽  
Vol 60 (02) ◽  
Author(s):  
Shuaizhao Wang ◽  
Ronghui Xu ◽  
Zujun Qin ◽  
Houquan Liu ◽  
Shijie Deng ◽  
...  
Keyword(s):  
Refractive Index ◽  
Dual Band ◽  
Terahertz Absorber ◽  
Dirac Semimetal ◽  
Wide Range

Simulation and experiments for a broadband terahertz absorber

2011 ◽  
Vol 9 (s1) ◽  
pp. s10402-310404 ◽  
Author(s):  
Dainan Zhang Dainan Zhang ◽  
Qiye Wen Qiye Wen ◽  
Yunsong Xie Yunsong Xie
Keyword(s):  
Terahertz Absorber ◽  
Broadband Terahertz
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