Results 191 to 200 of about 101,767 (351)

Self‐Trapped Hole Migration and Defect‐Mediated Thermal Quenching of Luminescence in α‐ and β‐Ga2O3

Advanced Functional Materials, EarlyView.
Temperature‐dependent photoluminescence and first‐principles calculations reveal self‐trapped hole migration as the microscopic origin of thermal quenching in α‐ and β‐Ga2O3. The low migration barrier in α‐Ga2O3 enables defect trapping and enhances blue luminescence, while the higher barrier in β‐Ga2O3 preserves ultraviolet emission at elevated ...
Nima Hajizadeh, Ymir K. Frodason, Clemens Petersen, Benjamin M. Janzen, Luca Sung‐Min Choi, Nils Bernhardt, Felix Nippert, Zbigniew Galazka, Joel B. Varley, Holger von Wenckstern, Lasse Vines, Markus R. Wagner   +11 more
wiley   +1 more source

Metasurface based on phase change materials for electrically reconfigurable THz beam steering in copolarized transmission mode. [PDF]

Sci Rep
Kumar K, Vidal B, Garcia-Meca C.
europepmc   +1 more source

Multiple-Beam Steering Using Graphene-Based Coding Metasurfaces. [PDF]

Micromachines (Basel), 2023
Zheng B, Rao X, Shan Y, Yu C, Zhang J, Li N.   +5 more
europepmc   +1 more source

3D-printed fiber-steered acoustic black hole beam for enhanced damping in low-frequency range

Koichi Mizukami, H. Shirai, Yoshio Hiraki, Kaishi Itashiki, Keiji Ogi   +4 more
openalex   +1 more source

The Dynamics of Interfacial Trap States in High‐Detectivity Near‐Infrared Photomultiplication Organic Photodetectors

Advanced Functional Materials, EarlyView.
Photomultiplication organic photodetectors (PM OPDs) are an attractive strategy for health‐monitoring. Here, PM‐OPDs are reported with a specific detectivity of 5.7 × 1012 Jones and external quantum efficiency values of 3500% under −10 V. The dynamics of carrier trapping in these devices are elucidated through trap selective spectroscopical techniques.
Marie Houot, Zhuoran Qiao, Beier Hu, Davide Nodari, Francesco Furlan, Filip Aniés, Yicheng Yang, Martin Heeney, Artem A. Bakulin, Nicola Gasparini   +9 more
wiley   +1 more source

Twist-Induced Beam Steering and Blazing Effects in Photonic Crystal Devices. [PDF]

Light Sci Appl
Roy N, Lou B, Fan S, Mayer A, Lobet M.
europepmc   +1 more source

Beam-steering metasurfaces assisted coherent optical wireless multichannel communication system. [PDF]

Nanophotonics, 2023
Tao J, You Q, Yang C, Li Z, Deng L, Wu M, Luo M, Wu L, Li C, Liu Z, He Z, Xiao X, Zheng G, Yu S.   +13 more
europepmc   +1 more source

A Smart Magnetically Actuated Flip‐Disc Programmable Metasurface with Ultralow Power Consumption for Real‐Time Channel Control

Advanced Functional Materials, EarlyView.
The study proposes a 1‐bit programmable metasurface based on flip‐disc display, named flip‐disc metasurface (FD‐MTS). This new design enables ultralow energy consumption while maintaining coding patterns. It also exhibits high scalability and multifunctional flexibility.
Jiang Han Bao, Che Liu, Jia Cheng Li, Zhen Hao Fu, Yi Su Huang, Si Qi Huang, Lei Zhang, Jian Wei You, Tie Jun Cui   +8 more
wiley   +1 more source

Taming Fabry-Pérot resonances in a dual-metasurface multiband antenna with beam steering in one of the bands. [PDF]

Sci Rep, 2023
Gonçalves Licursi de Mello R, Lepage AC, Begaud X.   +2 more
europepmc   +1 more source

Terahertz magneto-optical metadevice for active spin-selective beam steering and energy distribution with nonreciprocal isolation

, 2023
Dan Zhao, Fei Fan, Jiayue Liu, Zhiyu Tan, Hao Wang, Qinghui Yang, Qiye Wen, Shengjiang Chang   +7 more
openalex   +1 more source