Results 141 to 150 of about 2,058,874 (276)

On-chip Cherenkov radiation tuning in 3.2-14 THz

Nature Communications
Cherenkov radiation has attracted much attention for promoting the free electron radiation sources. Using hyperbolic metamaterial, Cherenkov radiation can be excited using low-energy electrons and thus on-chip free electron radiation source has been ...
Tianchang Li, Fang Liu, Yudi Chen, Xiaotong Xiong, Kaiyu Cui, Xue Feng, Wei Zhang, Yidong Huang   +7 more
doaj   +1 more source

Terahertz Cherenkov radiation induced by a self-modulated electron beam in plasma wakefield

AIP Advances, 2019
In this paper, a novel scheme of generating terahertz radiation is proposed, which considers a relativistic electron beam being modulated by its self-excited plasma wakefield in a plasma-filled slow-wave structure (SWS).
Shengpeng Yang, Qing Zhou, Changjian Tang, Shaoyong Chen, Yuxi Xia   +4 more
doaj   +1 more source

Broadband Conductance Matching Effect in Conductive Metamirrors

Advanced Physics Research, EarlyView.
A conductance matching effect is revealed in conductive metamirrors whose input conductance can be broadband self‐matched to the free space when the conductivity‐thickness product equals 8 mS. This effect enables thickness‐invariant perfect absorption at low frequencies, and tunable resonances at higher‐order modes, providing new opportunities for ...
Guang Chen, Zhimin Jia, Dongxue Han, Liang Peng, Zuojia Wang   +4 more
wiley   +1 more source

Interconversion of Optical to Terahertz Pulses in Nonlinear Beta Barium Borate Crystal

Advanced Physics Research, EarlyView.
ABSTRACT Low‐temperature β‐phase barium borate (β‐BBO) is an important nonlinear crystal, widely utilized for optical second‐harmonic (SH) generation. Recent re‐measurements of refractive indices in the terahertz (THz) range reveal that β‐BBO is a positive uniaxial crystal.
Yingyu Guo, Boyuan Chen, Zhangshun Li, Zhiqiang Lan, Huiping Zhang, Lin Xi, Zuanming Jin, Yan Peng, Yiming Zhu   +8 more
wiley   +1 more source

Molten Zinc Coordination Polymer Glass as a Host for Stable and Processable Optical Dye Composites

EcoEnergy, EarlyView.
Zinc‐based coordination polymer glass is employed to suppress aggregation‐caused quenching (ACQ) and enhance molecular stability, enabling improved luminescence performance in the solid state. The emission color of the hybrid composites can be tuned by varying the incorporated guest molecules, while the glass matrix effectively prevents aggregation and
Jaeho Lee, Wengang Huang, Yoshiki Sugai, Xiangyi Zha, Yuelei Chen, Joshua A. Powell, Yi‐Chen Hsu, Zixi Xie, Vicki Chen, Lianzhou Wang, Jingwei Hou   +10 more
wiley   +1 more source

Atmospheric Propagation of Terahertz Radiation

, 2012
Terahertz (THz) radiation, sandwiched between traditional microwave and visible light, is the electromagnetic spectrum with the frequency defined from 0.1 to 10 THz (1THz=1012Hz). Until recently, due to the difficulty of generating and detecting techniques in this region, THz frequency band remains unexplored compared to other range and tremendous ...
Yao, Jianquan, Wang, Ran, Cui, Haixia, Wang, Jingli   +3 more
openaire   +3 more sources

Bio‐Inspired Ordered WO3 Nano‐Helixes Enable Multi‐Band Electrochromic Smart Windows with Ultrafast Switching and Robust Cyclability

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Biomimetic ordered nano‐helix WO3 films enable multi‐band electrochromic photothermal management across the visible, near‐infrared, mid‐ and long‐wave infrared spectra, with ultrafast switching (<3 s) and robust durability (>10 000 cycles). These findings establish new paradigms for next‐generation photothermal management systems and energy‐efficient ...
Pan Li, Ying Lv, Xin You, Hangyu Ma, Tienan Wang, Yue Shen, Xiaotian Li, Xiaoyang Guo, Guofa Cai, Xingyuan Liu   +9 more
wiley   +1 more source

DFT Insight Into Physical Properties of Halide Ions Replacements in Oxo‐Selenate Halide Compounds for Photovoltaic Application

Energy Science &Engineering, EarlyView.
Using density functional theory (CASTEP, GGA–PBE), the structural, electronic, optical, and mechanical properties of YSeO₃X (X = F, Cl, Br, and I) compounds are systematically investigated. The materials have exhibited structural stability, tunable band gaps, strong optical absorption, anisotropic ductile behavior, and promising potential for ...
Nawishta Jabeen, Ahmad Hussain, Ali Yaqoob, Omer Musa, Aseel Smerat, Joy Djuansjah   +5 more
wiley   +1 more source

Terahertz radiation by quantum interference of excitons in a one-dimensional Mott insulator. [PDF]

Nat Commun, 2023
Miyamoto T, Kondo A, Inaba T, Morimoto T, You S, Okamoto H.   +5 more
europepmc   +1 more source

Review of millimeter‐wave and terahertz near‐field synthetic aperture radar imaging technology

InfoScience, EarlyView.
Abstract This paper comprehensively reviews the development of millimeter‐wave (MMW) and terahertz (THz) near‐field imaging technologies, with an emphasis on the state of synthetic aperture radar (SAR)‐based imaging technologies. Near‐field imaging technologies are categorized into passive and active imaging modes, among which active imaging is favored
Qi Yang, Hongqiang Wang, Xu Chen, Xin Peng   +3 more
wiley   +1 more source