Results 101 to 110 of about 56,977 (335)

Large dynamic range terahertz phase modulator based on graphene-metal hybrid metasurface [PDF]

, 2023
Hong Wang, Fangrong Hu, Xinlong Xu, Yumin Gong, Mingzhu Jiang, Longhui Zhang, Yingchang Zou   +6 more
openalex   +1 more source

Optical properties of BiB3O6 in the terahertz range

Results in Physics, 2020
We present the spectra of the refractive index and the absorption coefficient of BiB3O6 (BIBO) crystal measured by the means of terahertz time-domain spectroscopy in the frequency range of 0.18–2.75 THz. We observe a large birefringence Δn = nZ − nX = 1.5 and the values of absorption coefficients of all three axes to be less than 5 cm−1 in the range ...
Yang Li, Jingguo Huang, Zhiming Huang, Nazar Nikolaev, Grigory Lanskii, Alexander Mamrashev, Yury Andreev   +6 more
openaire   +2 more sources

De Novo Design and Directed Evolution Refinement of Mirror‐Image Protein Binders Targeting Interleukin‐4

Advanced Science, EarlyView.
This study presents the de novo design and directed evolution of a mirror‐image D‐protein inhibitor targeting human interleukin‐4 (IL‐4). The engineered molecule exhibits nanomolar binding affinity for IL‐4 and effectively inhibits IL‐4–mediated signaling.
Liqing Xu, Yuxiang Ren, Tongyue Wang, Hongyong Li, Yue Yao, Lei Liu, Ke Sun, Peilong Lu   +7 more
wiley   +1 more source

High-temperature terahertz optical diode effect without magnetic order in polar FeZnMo$_3$O$_8$

, 2018
We present a terahertz spectroscopic study of polar ferrimagnet FeZnMo$_3$O$_8$. Our main finding is a giant high-temperature optical diode effect, or nonreciprocal directional dichroism, where the transmitted light intensity in one direction is over 100
Cheong, Sang-Wook, Dani, Keshav M., Gao, Bin, Kim, Jae Wook, Madéo, Julien, Man, Michael K. L., Talbayev, Diyar, Yu, Shukai   +7 more
core   +1 more source

Laser‐Induced Ultrafast Magnetic Phase Transition in 2D Van Der Waals Antiferromagnetic Heterostructures

Advanced Science, EarlyView.
In this work, ultrafast laser‐induced spin transfer and spin relaxation dynamics in 2D van der Waals antiferromagnetic CrI3/CrGeTe3 heterostructures are investigated. Laser excitation is demonstrated to induce pronounced interlayer nonequilibrium spin dynamics and ultrafast magnetic moment reconstruction, driving a transition from an antiferromagnetic (
Yang Wu, Fulu Zheng, San‐Dong Guo, Thomas Frauenheim, Zhaobo Zhou, Junjie He   +5 more
wiley   +1 more source

Photon‐Sphere Modes in Curved Optical Microcavities: A Black‐Hole Analogue Laser

Advanced Science, EarlyView.
An optical analogue of a Schwarzschild black hole is realized using curved microcavities that preserve light‐like geodesics. A new family of laser modes confined around the photon sphere is identified alongside conventional whispering‐gallery modes. Analytical theory, numerical simulations, and experiments reveal curvature‐induced confinement, enabling
Chenni Xu, Aswathy Sundaresan, Nazire‐Begüm Kazkal, Clement Lafargue, Lior Zarfaty, Li‐Gang Wang, Ofek Birnholtz, Dominique Decanini, Melanie Lebental, Patrick Sebbah   +9 more
wiley   +1 more source

Metamaterial near-field sensor for deep-subwavelength thickness measurements and sensitive refractometry in the terahertz frequency range

, 2012
We present a metamaterial-based terahertz (THz) sensor for thickness measurements of subwavelength-thin materials and refractometry of liquids and liquid mixtures.
Beigang, René, Neu, Jens, Rahm, Marco, Reinhard, Benjamin, Schmitt, Klemens M., Wollrab, Viktoria   +5 more
core   +1 more source

Transient Terahertz Oscillations During Photoinduced Polarization Topology Reconfiguration in Ferroelectric Superlattices

Advanced Science, EarlyView.
Terahertz resonances in crystalline heterostructures could close a spectral gap between conventional electronics and photonics while opening new windows on non‐equilibrium lattice dynamics. Femtosecond optical screening of the depolarization field in epitaxial PbTiO3/SrTiO3 superlattices launches a collective polar mode that oscillates near 1 THz and ...
Deepankar Sri Gyan, Hyeon Jun Lee, Xiangwei Guo, Youngjun Ahn, Samuel D. Marks, Mohammed H. Yusuf, Matthew Dawber, James M. Glownia, Diling Zhu, Takahiro Sato, Sanghoon Song, Haidan Wen, Jia‐Mian Hu, Paul G. Evans   +13 more
wiley   +1 more source

Prospects for terahertz imaging the human skin cancer with the help of gold-nanoparticles-based terahertz-to-infrared converter

, 2019
The design is suggested, and possible operation parameters are discussed, of an instrument to inspect a skin cancer tumour in the terahertz (THz) range, transferring the image into the infrared (IR) and making it visible with the help of standard IR ...
A. G. Paulish, AS Darling, AV Postnikov, AV Postnikov, B. B. Hu, B. Lesiak, C Loo, Cecilie Ro/nne, CL Huang, DALI, E Pickwell, Elizabeth Berry, H Okamoto, I ELSAYED, J. W. Lynn, JH Chen, JH Son, K Moldosanov, KA Moldosanov, KA Moldosanov, KFA Ross, N. E. Christensen, NW Ashcroft, PS Zagubisalo, R Kubo, R. KUBO, RM Woodward, RM Woodward, RM Woodward, S.-J. Oh, SA Kuznetsov, SA Kuznetsov, Sergei Alexandrovich Kuznetsov, Sergey A. Kuznetsov, Seung Jae Oh, Seung Jae Oh, SJ Oh, T Rowland, Tschang-Uh Nahm, V.P. Wallace, VP Wallace, X Huang, Yu. Ya. Gafner, ZM Zhang   +43 more
core   +1 more source

Dirac Surface‐State Driven Broad Spectral Band Low Quantum Energy Photoresponse in Quaternary Topological BiSbSe2Te

Advanced Science, EarlyView.
Quaternary topological BiSbSe2Te are synthesized and demonstrates a broad spectral band photoresponse, ranging from infrared to terahertz and to millimeter waves, with a particular excellence on detection of low quantum energy terahertz photons. The observed photoresponse is attributed to the excitation of plasmonic nonequilibrium electrons originating
Tianning Zhang, Jinchao Tong, Jiantian Zhang, Peng Yu, Heng Luo, Luo Yan, Boyu Yang, Tiantian Huang, Junhui Ran, Yan Chen, Liujiang Zhou, Xin Chen, Ning Dai, Jianlu Wang, Junhao Chu   +14 more
wiley   +1 more source