Results 101 to 110 of about 102,528 (248)
Multifunctional Metasurfaces for Bridging Terahertz Waves in Free Space and Waveguides
Advanced Physics Research, EarlyView.A multifunctional terahertz metasurface capable of simultaneous orthogonal polarization conversion and phase modulation is integrated onto a dielectric slab waveguide, thereby enabling efficient free‐space‐to‐guided‐wave coupling. By implementing tailored phase gradients on the metasurface, we demonstrate the formation of a focused spot within the ...
Jinhui Lu +5 more
wiley +1 more source
Dynamic fragmentation characteristics of rock avalanche with tectonic joints
Zhongguo dizhi zaihai yu fangzhi xuebaoIn recent years, rock avalanche disasters have been occurring frequently in southwest China, which seriously affect the regional ecological environment and human activities.
Jiayuan ZANG +7 more
doaj +1 more source
Improved frequency divider employs transistor avalanche effect [PDF]
, 1967 New frequency divider circuit can be synchronized over a wider input control frequency range, has greater phase stability, and is less sensitive to temperature changes than conventional synchronized oscillators.
Johns, C. E.
core +1 more source
Physics of multi-GEM structures
, 2002 We show that physics of multi-GEM structures is rather complex, regarding the number of phenomena affecting detector performance. The high-pressure operation in noble gases and the ion feedback are considered in more detail.
A Buzulutskov +30 more
core +1 more source
A Review of Transient Characterization Techniques for Quantum Dot Light‐Emitting Diodes
Advanced Physics Research, EarlyView.This review surveys transient characterization techniques for quantum dot light‐emitting diodes, including TRPL, TREL, TA, and E‐TA. These methods resolve carrier‐selective dynamics across multiple time scales, enabling direct analysis of charge injection, exciton formation and recombination, efficiency roll‐off, and device degradation.
Jaekwon Kim +5 more
wiley +1 more source
Uncovering avalanche sources via acceleration measurements
Nature CommunicationsAvalanche sources describe rapid and local events that govern deformation processes in various materials. The fundamental differences between an avalanche source and its associated measured acoustic emission (AE) signal are encoded in the acoustic ...
Emil Bronstein +3 more
doaj +1 more source
A Substrate-Dissipating (SD) Mechanism for a Ruggedness-Improved SOI LDMOS Device
IEEE Journal of the Electron Devices Society, 2018 An SOI LDMOS device with improved ruggedness under unclamped inductive switching (UIS) is described based on the substrate-dissipating (SD) mechanism.
Bing Wang, Zhigang Wang, James B. Kuo
doaj +1 more source
Topographic curvature effects in applied avalanche modeling
Cold Regions Science and Technology, 2012 Abstract This paper describes the implementation of topographic curvature effects within the RApid Mass MovementS (RAMMS) snow avalanche simulation toolbox. RAMMS is based on a model similar to shallow water equations with a Coulomb friction relation and the velocity dependent Voellmy drag. It is used for snow avalanche risk assessment in Switzerland.
Fischer, Jan-Thomas +2 more
openaire +3 more sources
Measurements of hair temperature avalanche effect with alexandrite and Nd:YAG hair removal lasers. [PDF]
Lasers Surg Med, 2023 Vella D +6 more
europepmc +1 more source
Practical fast gate rate InGaAs/InP single-photon avalanche photodiodes
, 2009 We present a practical and easy-to-implement method for high-speed near infrared single-photon detection based on InGaAs/InP single-photon avalanche photodiodes (SPADs), combining aspects of both sine gating and self-differencing techniques.
Barreiro, Claudio +3 more
core +2 more sources