Results 51 to 60 of about 677,067 (160)

Near-Field Analysis of Terahertz Pulse Generation From Photo-Excited Charge Density Gradients [PDF]

, 2015
Excitation of photo-current transients at semiconductor surfaces by subpicosecond optical pulses gives rise to emission of electromagnetic pulses of terahertz (THz) frequency radiation.
Natrella, M, Freeman, JR, Renaud, CC, Graham, CS, Linfield, EH, Moodie, DG, Cannard, PJ, Davies, AG, Mitrofanov, O, Seeds, AJ, Mueckstein, R, Hatem, O, Robertson, MJ   +12 more
core   +1 more source

Terahertz radar with all-dielectric leaky-wave antenna

APL Photonics
Terahertz radars based on leaky-wave antennas are promising for the realization of radar systems with high resolution over short ranges. This type of radar relies on spatial frequency mapping to realize a wide field of view without mechanical actuation ...
Harrison Lees, Daniel Headland, Shuichi Murakami, Masayuki Fujita, Withawat Withayachumnankul   +4 more
doaj   +1 more source

A Motion Compensation Method for Terahertz SAR Imaging with a Large Squint

Photonics
Terahertz-band squint synthetic aperture radars (SARs) can obtain high-resolution images and have application potential in airborne radar systems. However, airborne radars usually have a large squint, which has led to traditional SAR algorithms no longer
Yuanfeng Li, Qi Yang, Xiaoqiang Hua, Hongqiang Wang   +3 more
doaj   +1 more source

Recent Advances in Programmable Metasurfaces and Meta‐Devices

Advanced Electronic Materials, EarlyView.
Programmable metasurfaces enable various novel functionalities by dynamically tuning electromagnetic wavefronts. This article provides a comprehensive review of recent advances in microwave and terahertz programmable metasurfaces, covering electrical, thermal, optical, and mechanical control mechanisms.
Linda Shao, Chong He, Nan Wang, Liming Si, Weiren Zhu   +4 more
wiley   +1 more source

Assessing plant water status: Part 2 – Non‐destructive and remote sensing approaches

Journal of the Science of Food and Agriculture, EarlyView.
Abstract Precise, real time and non‐destructive assessment of plant water status is important for advancing plant physiological understanding, optimizing water usage, improving crop resilience and supporting precision agriculture in the face of increasingly variable climatic conditions.
Naila Farooq, Bo Zhang, Bastian Leander Franzisky, Tasawer Abbas, Jochen Taiber, Martin Koch, Ian C Dodd, Christoph‐Martin Geilfus   +7 more
wiley   +1 more source

Microelectromechanical Maltese-cross metamaterial with tunable terahertz anisotropy

, 2012
Dichroic polarizers and waveplates exploiting anisotropic materials have vast applications in displays and numerous optical components, such as filters, beamsplitters and isolators. Artificial anisotropic media were recently suggested for the realization
Zhu, W.M., Zhang, X.H., Bourouina, T., Kwong, D.L., Tsai, D.P., Liu, A.Q., Lo, G.Q., Zheludev, N.I., Teng, J.H.   +8 more
core   +1 more source

Three‐Dimensional Optical Characterization of Magnetostrictive Deformation in Magnomechanical Systems

Laser &Photonics Reviews, EarlyView.
An optical approach is proposed for real‐time and high‐precision detection of the magnetostrictive deformation of an yttrium‐iron‐garnet sphere in three dimensions, based on the deformation induced spatial high‐order modes of the scattered field, postselection, and balanced homodyne detection.
Xiaomin Liu, Jing Zhang, Jie Li, Rongguo Yang, Jiangrui Gao, Tiancai Zhang   +5 more
wiley   +1 more source

Simultaneous Multi-Target Monitoring with Terahertz Leaky-Wave Radar

Leaky-wave radar has emerged as a viable alternative to mechanically steered terahertz radar systems. This technique is enabled by the relationship between angle-of-arrival and frequency, allowing the both the range and angle information of a target to ...
Lees, H., Withayachumnanku, W., Chung, B., Headland, D.   +3 more
core   +1 more source

Textile Metamaterials: Design, Fabrication, and Emerging Applications

Applied Research, Volume 5, Issue 5, October 2026.
Textile metamaterials combine sub‐wavelength electromagnetic structures with textile architectures, enabling flexible and wearable platforms for wave manipulation. This review highlights their evolution, fabrication strategies, electromagnetic characteristics, and emerging applications, while identifying key challenges and opportunities for next ...
Samanta M. de Holanda, Arthur M. da Silva, Thiago F. Santos, Dieter Rahmadiawan, Francisco D. M. Nobre, Jose Heriberto Oliveira do Nascimento, Idalmir de Souza Queiroz Júnior, Antonio Sergio Bezerra Sombra, Humberto D. de Andrade   +8 more
wiley   +1 more source

Integrated Sensing and Communication in a Fiber‐Wireless System With Time‐Phase Synthesis Dimension Waveform

Nanophotonics, Volume 15, Issue 17, 11 September 2026.
A unified fiber‐wireless integrated sensing and communication system is enabled by a single microwave photonic platform with a time‐phase synthesis dimension waveform. This architecture simultaneously delivers high‐speed data transmission, high‐precision wireless ranging, and accurate fiber diagnostics over a high‐power analog radio‐over‐fiber link ...
Shengkun Chen, Zhenglin Tang, Weiqiang Lyu, Mengke Wang, Yaowen Zhang, Zhen Zeng, Lingjie Zhang, Heping Li, Zhiyao Zhang, Yong Liu   +9 more
wiley   +1 more source