Results 121 to 130 of about 452,793 (301)

Ultrafast Optoacoustics Reveals Intricate 3D Anisotropic Elasticity in Nanocrystalline Membranes

Advanced Science, EarlyView.
Ultrafast optoacoustic spectroscopy combined with a Sagnac interferometer enables non‐contact, simultaneous characterization of thickness and the full three‐dimensional anisotropic elastic constants in freestanding nanocrystalline copper membranes. By capturing gigahertz Lamb waves and zero‐group‐velocity resonances followed by SAFE‐GA inversion, the ...
Shuchang Zhang, Yi He, Guojie Luo, Jie Huang, Pak San Yip, Haoyu Cui, Wanglinhan Zhang, Zijian Wang, Lin Ye, Yang Lu, Zhongqing Su, Yehai Li   +11 more
wiley   +1 more source

Research on Direct Detection Method and Performance of Single-photon Counting Terahertz Radar

Leida xuebao
The conventional terahertz radar suffers from limited operation range for long-distance, noncooperative target detection due to the low transmitter power and atmospheric attenuation effect, both of which pose a hindrance in meeting the requirements of ...
Kang LIU, Hongxuan WU, Jun YI, Hongqiang WANG, Chenggao LUO   +4 more
doaj   +1 more source

Tunable photonic crystal filter for terahertz frequency applications [PDF]

, 2003
In this Paper we investigate a tunable metallic photonic crystal filter with a novel mechanical tuning method, suitable for use in terahertz frequency applications.
Blaikie, R.J., Drysdale, T.D., Tim D. Drysdale, Richard J. Blaikie, Cumming, D.R.S., David R. S. Cumming   +5 more
core   +1 more source

Broadband and efficient terahertz beam scanning using a 3D-printed Risley prism

, 2022
We present a Risley prism beam-scanning system for terahertz waves. The scanning system consists of two 3Dprinted prisms made of cyclic olefin copolymer (COC), which is a low loss material at terahertz frequencies.
Lees, H., Chung, B., Headland, D., Withayachumnakul, W.   +3 more
core   +1 more source

A Molten Salt Extraction Method for Palladium Recovery via the CaPd2 Intermetallic Compound

Advanced Science, EarlyView.
A designed Ca → CaPd2 → Pd pathway enables acid–free palladium recovery in molten salt. Calcium alloying forms anionic CaPd2, which is selectively oxidized by iodine from CaI2 to yield high–purity metallic Pd. ABSTRACT To address palladium scarcity and the low efficiency of conventional recovery processes, this work presents a molten–salt extraction ...
Jiapeng Zhang, Dengjie Yan, Muwen Chen, Baoqiang Xu, Bin Yang, Bingyi Song, Lingxin Kong   +6 more
wiley   +1 more source

State-of-the-Art Room Temperature Operable Zero-Bias Schottky Diode-Based Terahertz Detector Up to 5.56 THz. [PDF]

Sensors (Basel), 2023
Yadav R, Ludwig F, Faridi FR, Klopf JM, Roskos HG, Preu S, Penirschke A.   +6 more
europepmc   +1 more source

A Monolithic Visible, Infrared and Terahertz 2D Detector

, 2010
A monolithic multispectral detector for imaging in the visible (VIS), infrared (IR) and terahertz (THz) ranges has been designed for operation at room temperature.
J. Meilhan, Francois Simoens, F. Simoens, S. Pocas, Matteo Perenzoni, Jerome Meilhan, Perenzoni, Matteo, Nicola Massari, Massari, Nicola, Stephane Pocas   +9 more
core   +1 more source

A micromechanical beam-steering device for terahertz systems [PDF]

, 2004
Beam-steering techniques are required to fully exploit terahertz imaging systems. We propose and model a device employing artificial dielectric techniques to provide a variable phase-control medium.
David R. S. Cumming, Timothy D. Drysdale, Drysdale, T.D., Cumming, D.R.S.   +3 more
core   +1 more source

Generation and Enhancement of Persistent Nanoscale Magnetization in All‐Dielectric Metasurfaces by Optically Injected and Localized Free Carriers

Advanced Science, EarlyView.
Infrared metasurface‐guided waves (IR‐MGW) scattered by a time interface (TI) induced by rapid, localized free‐carrier generation can be efficiently rectified to generate strong, persistent magnetic fields. We develop a rigorous, theoretical model to study a time‐varying, dispersive medium and uncover the redistribution of the initial energy of the IR ...
Shivaksh Rawat, Samyobrata Mukherjee, Gennady Shvets   +2 more
wiley   +1 more source

A Novel Terahertz Detector Based on Asymmetrical FET Array in 55-nm Standard CMOS Process. [PDF]

Materials (Basel), 2022
Liu Y, Zhang X, Sun J, Tong L, Kong L, Deng T.   +5 more
europepmc   +1 more source