Results 61 to 70 of about 1,378,833 (339)

Theoretical simulation of a dual-band and dual-broadband terahertz metamaterial absorber using two asymmetric rectangular rings

AIP Advances
In this paper, a dual-band and dual-broadband terahertz (THz) metamaterial absorber (MA) using two asymmetric rectangular rings is proposed and studied.
Kwang-Jin Ri
doaj   +1 more source

Design and Analysis of a Graphene-Based Terahertz Metamaterial Absorber Exhibiting Broadband Dual-Resonance, Polarization Independence and Wide-Angle Robustness

Engineered Science
A broadband terahertz (THz) metamaterial absorber based on graphene is demonstrated, featuring a compact three-layer structure composed of a gold bottom layer, a silicon dioxide (SiO2), and a patterned graphene layer on top.
Ahmed Ali, Yosef T. Aladadi, Asrafali Barkathulla, Sulaiman Al-Sowayan, Zaid Ahmed Shamsan, Majeed A. S. Alkanhal   +5 more
doaj   +1 more source

Polarization-insensitive silicon microring modulator for single sideband modulation

, 2018
We propose and experimentally demonstrate a polarization-insensitive single sideband modulator based on silicon microring modulators (MRM). The proposed modulator splits and modulates the two orthogonal polarization states of an input laser in a loopback
Shi, Wei, Lyu, Mingyang, Guan, Xun, Rusch, Leslie, Xun Guan, Mingyang Lyu, Wei Shi, Leslie Ann Rusch   +7 more
core   +1 more source

Directing Near‐Perfect (001) Orientation in Wafer‐Scale BiOI Thin Films via Halide‐Mediated van der Waals Stacking

Advanced Materials, EarlyView.
Our work introduces a new framework that fundamentally changes how orientation in bismuth oxyhalide systems is approached. Comprehensive experiments, backed by theoretical models, reveal the pivotal role of halide anions to modify the van der Waals stacking energies required to direct orientation. Our method enables the fabrication of near perfect (001)
Gabriel Aygur, Ashakiran Maibam, Hayden Tuohey, Tony Nguyen, Mei Xian Low, Sumeet Walia, Zijun (June) Yong, Ravichandar Babarao, Daniel Gomez, Enrico Della Gaspera, Joel van Embden   +10 more
wiley   +1 more source

Dual-Band Terahertz Metamaterial Absorber with Polarization Insensitivity and Wide Incident Angle

, 2011
This paper presents the design, simulation and mea- surement of a dual-band terahertz metamaterial absorber with polarization-insensitivity and wide incident angle. The unit cell of the metamaterial consists of top resonator structures and low metal- lic
Xunjun He, Yue Wang, Jian-Min Wang, Tai-Long Gui, Qun Wu   +4 more
semanticscholar   +1 more source

Elasticity‐Driven Periodic Polarization Patterns in a Chiral Ferroelectric Nematic Fluid

Advanced Materials, EarlyView.
Chiral polar ferroelectric nematic fluids exhibit spontaneous formation of stripe, square, and hexagonal polarization textures under confinement. Controlled by thickness and anchoring, these patterns produce spatially modulated nonlinear optical responses.
Anej Sterle, Peter Medle Rupnik, Luka Cmok, Aitor Erkoreka, Marta Lavrič, Natan Osterman, Calum J. Gibb, Jordan Hobbs, Josu Martinez‐Perdiguero, Richard J. Mandle, Alenka Mertelj, Nerea Sebastián   +11 more
wiley   +1 more source

Tunable High-Sensitivity Four-Frequency Refractive Index Sensor Based on Graphene Metamaterial

Sensors
As graphene-related technology advances, the benefits of graphene metamaterials become more apparent. In this study, a surface-isolated exciton-based absorber is built by running relevant simulations on graphene, which can achieve more than 98% perfect ...
Xu Bao, Shujun Yu, Wenqiang Lu, Zhiqiang Hao, Zao Yi, Shubo Cheng, Bin Tang, Jianguo Zhang, Chaojun Tang, Yougen Yi   +9 more
doaj   +1 more source

Generation of Optical Vortices With Polarization-Insensitive Metasurfaces

IEEE Photonics Journal, 2020
Traditionally, optical vortices (OVs) were generated with diffractive optical elements (DOEs) such as spiral phase plate (SPP), fork grating, spatial light modulator (SLM), and liquid crystal display (LCD).
Z. Shen, R. Li, Y. Z. Xue, Z. Y. Qiu, Z. Y. Xiang, J. Y. Zhou, B. F. Zhang   +6 more
doaj   +1 more source

Giant Nonequilibrium Valley Control via Spin‐Selective Hot‐Carrier Transfer in an Antiferromagnetic van der Waals Stack

Advanced Materials, EarlyView.
Spin‐selective hot‐carrier transfer across CrSBr/WSe2/CrSBr interfaces couples the continuously tunable magnetic configuration of antiferromagnetic CrSBr to the valley degrees of freedom of monolayer WSe2, enabling giant nonequilibrium valley control and magnetic‐state‐dependent reversal of circularly polarized emission.
Ke Xiao, Jiabao Yang, Kai Feng, Yicheng Guan, James Caleb Peters, Ramona Hoffmann, Niels Schröter, Stuart S. P. Parkin   +7 more
wiley   +1 more source

Graphene-Based Absorber: Tunable, Highly Sensitive, Six-Frequency

Molecules
Due to the equipartition exciton property of graphene metamaterials, researchers have applied them to the design of absorbers and developed a series of absorbers covering different wavebands (including narrowband and broadband).
Xinmei Wang, Xianding He, Hua Yang, Xu Bao, Yongjian Tang, Pinghui Wu, Yougen Yi   +6 more
doaj   +1 more source