Results 141 to 150 of about 19,013 (311)

Terahertz Circular Dichroism Spectroscopy of 3D Chiral Metallic Microstructures Fabricated Using High Precision CNC Machining

IEEE Journal of Microwaves
Recent advancements in terahertz wave applications for sensing, imaging, and high-speed communication have spurred a substantial demand for low-cost, easily accessible optical components capable of manipulating terahertz wave polarization. In this study,
Atsushi Ouchi, Saroj R. Tripathi
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

Ultrafast Dynamics of Spin Current and Electron Temperature in Spintronic Terahertz Emitters

Advanced Science, EarlyView.
This work quantifies optical‐pump‐induced THz transmission variations to reveal electron and lattice temperature dynamics and presents time‐resolved THz spectral maps for sub‐picosecond analysis. A 63 ± 8 fs time lag between THz emission and laser excitation is identified, serving as an intrinsic parameter limiting the upper frequency of spintronic THz
Yifan Wang, Zuanming Jin, Miao Cai, Zhiqiang Lan, Zhenjie Ge, Zheng Feng, Wei Tan, Alexei V. Balakin, Alexander P. Shkurinov, Yan Peng, Yiming Zhu   +10 more
wiley   +1 more source

Terahertz metasurface based on vanadium dioxide for realizing CNOT logic gate and tunable vortex beams

Results in Physics
Independent phase control of circularly polarized light on a single metasurface is highly desirable for terahertz applications. However, most metasurfaces reported suffer from two critical limitations: the lack of dynamic tunability and narrow ...
Fengyu Leng, Qingyue Zhang, Xia Wang, Wing Yim Tam   +3 more
doaj   +1 more source

Terahertz generation by multiplication

, 2007
We report on the status of symmetric varactor diode multipliers for signal generation in the terahertz frequency range. The progress and basic principles of Heterostructure Barrier Varactor (HBV) diodes are presented.
Emadi, Arezoo,, Emadi, Arezoo, Vukusic, Josip,, Bryllert, Tomas,, Stake, Jan, Stake, Jan,, Vukusic, Josip, Bryllert, Tomas   +7 more
core   +1 more source

Photonic‐Enabled Energy‐Efficient Transparent Neuromorphic Computing Devices: A Review

Advanced Science, EarlyView.
Transparent photonic neuromorphic computing devices merge optics and brain‐inspired computing to overcome von Neumann bottlenecks with ultrafast, low‐energy processing. By exploiting transparent oxides, 2D materials, phase‐change materials, and hybrid heterostructures, these platforms enable photonic synapses, memory, and logic for see‐through edge ...
Shuvaraj Ghosh, Ki‐bum Lee, Junghyeon Lee, Seunghee Cho, Malkeshkumar Patel, Hangfei Li, Yu Wen, Ye Zhou, Joondong Kim   +8 more
wiley   +1 more source

Mathematical modeling of diffraction of tem-wave on the periodic 2D structures of graphene micro-ribbons with finite length at terahertz frequency range

Физика волновых процессов и радиотехнические системы, 2014
The mathematical simulation of diffraction of TEM-wave on the periodic 2D structures of graphene micro-ribbons with finite length is performed using the computational algorithm developed by projection method for the normal incident TEM-wave at terahertz ...
G.S. Makeeva, O.A. Golovanov, V.V. Varenitca   +2 more
doaj  

Design and verify a dual modulated metasurface in terahertz range. [PDF]

Sci Rep, 2020
Zhong M.
europepmc   +1 more source

Terahertz time-domain spectroscopy for distinguishing different kinds of gunpowder

, 2013
This article contains information about using terahertz time-domain spectroscopy for the security industry, particularly for distinguishing chosen different kinds of gunpowder.
Tomáš Gavenda, Křesálek, Vojtěch, Gavenda, Tomáš, Vojtĕch Křesálek   +3 more
core   +1 more source

Large Temperature‐invariant Anomalous Nernst Effect in Non‐collinear Antiferromagnet Mn3Pt

Advanced Science, EarlyView.
Based on the noncollinear antiferromagnetic Mn3Pt thin films, the composition‐tunable Mn‐3d orbital states directly govern the Berry curvature. As a result, a giant and temperature‐invariant anomalous Nernst coefficient of 0.71 µV/K is achieved under Mn‐rich conditions.
Pengwei Gong, Xiaolin Zhang, Wei Zhu, Mingzhi Wang, Chang Pan, Aoqi Xu, Yandong Guo, Yuheng Li, Jiaxin Chen, Yanchang Zhou, Zhong Shi, Dingfu Shao, Liang Liu, Shiming Zhou, Yicheng Guan, Ruiqing Cheng, Xuepeng Qiu   +16 more
wiley   +1 more source