Metamaterial absorbers: from tunable surface to structural transformation

W Li, M Xu, HX Xu, X Wang, W Huang - Advanced Materials, 2022 - Wiley Online Library
Since the first demonstration, remarkable progress has been made in the theoretical
analysis, structural design, numerical simulation, and potential applications of metamaterial …

[HTML][HTML] Bipolar charge trapping for absorption enhancement in a graphene-based ultrathin dual-band terahertz biosensor

G Varshney, P Giri - Nanoscale Advances, 2021 - pubs.rsc.org
Surface plasmons generated at the graphene dielectric interface can be altered by trapping
the electric charge. A technique is implemented for trapping the bipolar electric charge on …

Altering the multimodal resonance in ultrathin silicon ring for tunable THz biosensing

MS Khan, G Varshney, P Giri - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
A technique is implemented for altering the multimodal resonance generated in an ultrathin
silicon ring resonator-based terahertz (THz) absorber. The absorber provides the dual-band …

Broadband polarization insensitive and tunable terahertz metamaterial perfect absorber based on the graphene disk and square ribbon

A Norouzi-Razani, P Rezaei - Micro and Nanostructures, 2022 - Elsevier
Designing broadband absorbers with only one metamaterial layer operating in the terahertz
band is a relatively difficult challenge. In this paper, we proposed and investigate a …

Multiband polarization insensitive and tunable terahertz metamaterial perfect absorber based on the heterogeneous structure of graphene

A Norouzi-Razani, P Rezaei - Optical and Quantum Electronics, 2022 - Springer
In this paper, we present and investigate a multi-band metamaterial perfect absorber based
on the heterogeneous structure of graphene with Cu and SiO2 substrates. The top layer of …

Broadband terahertz metamaterial absorber and modulator based on hybrid graphene-gold pattern

Y Lv, W Liu, J Tian, R Yang - Physica E: Low-dimensional Systems and …, 2022 - Elsevier
We have numerically demonstrated a tunable broadband metamaterial absorber (MA) by
introducing a graphene pattern and a gold disk, of which the bandwidth is up to 3.4 THz …

Metamaterial wide-angle dual-band absorber with graphene surface

X Zhu, B Wang - Surfaces and Interfaces, 2022 - Elsevier
A metamaterial dual-band absorber (DBA) is designed based on a dual-ridge array with
graphene. The proposed structure is capable of achieving perfect absorption at 1130 nm …

[HTML][HTML] Polarization-insensitive and absorption-tunable ultra-broadband terahertz metamaterial absorbers based on multiple resonant rings

Z Li, H Xia, Y Zhao, W Lei, C Zhao, W Xie - Results in Physics, 2022 - Elsevier
A polarization-insensitive and absorption-tunable ultra-broadband terahertz metamaterial
absorbers based on multiple split resonance rings (SRRs) are designed. The single-layer …

Bifunctional terahertz sensor based on tunable graphene metamaterial absorber

S Ma, S Wen, X Mi, H Zhao, J Zhao - Optics Communications, 2023 - Elsevier
In this paper, we propose a tunable graphene metamaterial absorber (TGMA) as a
bifunctional terahertz sensor. The TGMA can excite one peak with a maximum absorption of …

[HTML][HTML] Deep neural network-enabled bifunctional terahertz metasurface design for absorption and polarization conversion

Y Lv, S Liu, J Tian, C Mou - Results in Physics, 2023 - Elsevier
With the assistance of deep neural networks, a bifunctional metasurface (MS) was designed
and optimized, ie, a broadband absorber and a broadband polarization converter. The MS …