Results 31 to 40 of about 179,201 (284)
An Interface View of Directed Sandpile Dynamics
, 2001 We present a directed unloading sand box type avalanche model, driven by slowly lowering the retaining wall at the bottom of the slope. The avalanche propagation in the two dimensional surface is related to the space-time configurations of one ...
A. Ben-Hur +18 more
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Multiplication and excess noise characteristics of thin 4H-SiC UV avalanche photodiodes [PDF]
, 2002 The avalanche multiplication and excess noise characteristics of thin 4H-SiC avalanche photodiodes with an i-region width of 0.1 µm have been investigated. The diodes are found to exhibit multiplication characteristics which change significantly when the
David, J.P.R. +6 more
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Hammerhead: a compact 300 kV vacuum bushing
Nature CommunicationsHigh-voltage vacuum bushings are vital for particle accelerators, X-ray tubes, electron microscopes, fusion devices, and electron sources. Commercial bushings, however, are limited to ~ 100 kV, and exceeding this limit has proven to be difficult.
Moein Borghei +5 more
doaj +1 more source
New Perspective on Passively Quenched Single Photon Avalanche Diodes: Effect of Feedback on Impact Ionization [PDF]
, 2012 Single-photon avalanche diodes (SPADs) are primary devices in photon counting systems used in quantum cryptography, time resolved spectroscopy and photon counting optical communication.
Hayat, Majeed M. +4 more
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Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective Considerable efforts have been dedicated to developing effective treatments for post‐stroke executive impairment (PSEI), among which repetitive transcranial magnetic stimulation (rTMS) has shown great potential. This study aimed to investigate the therapeutic effects of high‐frequency rTMS on working memory (WM) and response ...
Mengting Lao +6 more
wiley +1 more source
AlAsSb avalanche photodiodes with a sub-mV/K temperature coefficient of breakdown voltage
, 2011 The temperature dependence of dark current and avalanche gain were measured on AlAsSb p-i-n diodes with avalanche region widths of 80 and 230 nm. Measurements at temperatures ranging from 77 to 295 K showed that the dark current decreases rapidly with ...
Tan, C.H., Xie, S.
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Elinvar Materials: Recent Progress and Challenges
Advanced Engineering Materials, EarlyView.Elinvar materials, exhibiting temperature‐invariant elastic modulus, are critical for precision instruments and emerging technologies. This article reviews recent progress in the field, with a focus on the anomalous thermoelastic behavior observed in key material systems.
Wenjie Li, Yang Ren
wiley +1 more source
Optical determination of snow density via sub-surface scattering
Communications PhysicsThe physical properties of snow, such as its stiffness, reflectivity, and thermal conductivity, are critical components in feedback processes of the Earth’s system and useful proxies for various applications in environmental science, ranging from ...
Lars Mewes +3 more
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Geomorphology of Las Derrumbadas dome complex, Puebla Mexico
Journal of Maps, 2019 This paper comprises a geomorphologic map of the Las Derrumbadas (LDR) volcanic complex in Mexico. The complex stretches over more than 285 km2, the stratigraphic column encompasses a range age from Cretacious to Quaternary. The methodology used involved
J. A. Muñiz-Jáuregui +4 more
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