Results 141 to 150 of about 65,222 (316)

Terahertz Slot Waveguide for Taperless Interfacing

We propose a slot waveguide with taperless interfaces that can couple terahertz waves directly from metallic hollow waveguides, leading to an entirely new coupling mechanism for interconnection between planar and non-planar waveguides.
Gao, W., Ngo, N.H., Fujita, M., Li, M., Withayachumnankul, W.   +4 more
core   +1 more source

Broadband and high-efficient terahertz wave deflection based on C-shaped complex metamaterials with phase discontinuities

, 2013
A terahertz metamaterial comprised of C-shaped SRRs was experimentally devised and demonstrated to exhibit high-efficient and broadband anomalous refraction with strong phase discontinuities.
Zhang, Weili, Weisheng Yue, Tian, Zhen, Zhang, Xueqian, Jianqiang Gu, Shuang Zhang, Jiaguang Han, Xueqian Zhang, Zhang, Shuang, Zhen Tian, Weili Zhang, Gu, Jianqiang, Yue, Weisheng, Han, Jiaguang   +13 more
core   +1 more source

Helical Electron Beam Micro‐Bunching by High‐Order Modes in a Micro‐Plasma Waveguide

Advanced Science, EarlyView.
ABSTRACT Electron acceleration by a high‐power Laguerre‐Gaussian pulse in a micro‐plasma waveguide is investigated. When the incident laser travels in the waveguide, electrons on the wall are extracted into the vacuum core and accelerated by the longitudinal field of the waveguide mode.
Xingju Guo, Longqing Yi
wiley   +1 more source

Coupled Vacancy and Phonon‐Scattering Engineering Drive Defect Evolution Toward Multifunctional High‐Performance Bi2Te3 Thermoelectrics

Advanced Science, EarlyView.
ZnSb reduces carrier concentration and suppresses Te volatilization, while Se substitution within QLs softens phonons and enhances anharmonicity. Swapped bilayers near twin boundaries strengthen phonon scattering and interlayer bonding. As a result, the optimal sample achieves an ultra‐high zT ∼1.51, cooling temperature difference of ∼70 K, power ...
Ruiheng Li, Minwen Yang, Huangshui Ma, Jie Zheng, Shengqiang Cui, Xiaobo Tan, Xuri Rao, Xiang An, Zongxiang Kan, Siqi Huo, Jing Shuai, Min Hong, Ran Ang   +12 more
wiley   +1 more source

Cross Far- and Near-Field Beam Management Technologies in Millimeter-Wave and Terahertz MIMO Systems

IEEE Open Journal of Vehicular Technology
The evolution of wireless communication toward next-generation networks introduces unprecedented demands on data rates, latency, and connectivity. To meet these requirements, two key trends have emerged: the use of higher communication frequencies to ...
Yuhang Chen, Heyin Shen, Chong Han
doaj   +1 more source

Tunable High‐Performance Metamaterial Filters Based on Novel SRR Architectures

Advanced Science, EarlyView.
Based on two novel SRR configurations and two independent SRR integration approaches, four tunable bandpass metamaterial filters were fabricated with an ultra‐thin ceramic substrate. Among them, SM‐2 achieves over 97% electromagnetic wave transmittance, with a minimal 1.15% deviation in its resonant frequency prediction, making them promising ...
Lingxi Qu, Liya Zheng, Ruopeng Liu, Chunlin Ji, Bin Li   +4 more
wiley   +1 more source

Correction: Frequency selective fingerprint sensor: the Terahertz unity platform for broadband chiral enantiomers multiplexed signals and narrowband molecular AIT enhancement

PhotoniX, 2023
Jiaming Lyu, Shengyuan Shen, Lin Chen, Yiming Zhu, Songlin Zhuang   +4 more
doaj   +1 more source

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

Advanced Physics Research
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 ...
Yingyu Guo, Boyuan Chen, Zhangshun Li, Zhiqiang Lan, Huiping Zhang, Lin Xi, Zuanming Jin, Yan Peng, Yiming Zhu   +8 more
doaj   +1 more source

Concurrent Terahertz Spin Excitations and Phase Shift Control in Fe4Nb2O9: A Material for Synergizing Computation and Communication Technologies

Advanced Science, EarlyView.
A multifunctional terahertz (THz) platform is demonstrated, in a model material Fe4Nb2O9, exhibiting a large intrinsic THz phase shift alongside distinct THz magnon excitations in its antiferromagnetic phase. This coexistence of phase modulation and spin dynamics offers a promising pathway toward integrated THz communication and magnonic computation ...
Brijesh Singh Mehra, Karan Datt Sharma, Sanjeev Kumar, Gaurav Dubey, Mitanshi Gupta, Ravi Shankar Singh, Dibakar Roy Chowdhury, Christine Martin, Antoine Maignan, Kiran Singh, Dhanvir Singh Rana   +10 more
wiley   +1 more source

Influence of metal–semiconductor interface treatments and absorber structure on the performance and reliability of uni-traveling-carrier photodiodes (UTC-PDs)

Scientific Reports
The effects of absorber structure–controlled by adjusting the thickness ratio of doped and undoped InGaAs layers–and metal-semiconductor interface treatment methods were investigated in waveguide-type UTC-PDs. Ultraviolet-ozone (UVO) and ammonia solution
Soo Cheol Kang, Jin Chul Cho, Eui Su Lee, Dong Woo Park   +3 more
doaj   +1 more source