Results 101 to 110 of about 179,201 (284)

Multiplication theory for dynamically biased avalanche photodiodes: new limits for gain bandwidth product [PDF]

, 2012
Novel theory is developed for the avalanche multiplication process in avalanche photodiodes (APDs) under time-varying reverse-biasing conditions. Integral equations are derived characterizing the statistics of the multiplication factor and the impulse ...
Hayat, Majeed M., Ramirez, David A.
core   +1 more source

Carbon‐14 Perovskite Betavoltaics Reach Record 10.79% Efficiency

Carbon Energy, EarlyView.
A perovskite‐based betavoltaic cell incorporating carbon‐14 nanoparticles and formamidinium lead iodide achieves a record energy conversion efficiency of 10.79%. The device design enhances charge generation through an electron avalanche multiplication mechanism.
Hong Soo Kim, Ryan Rhee, Junho Lee, Muhammad Bilal Naseem, Jung Hwan Lee, Jong Hyeok Park, Su‐Il In   +6 more
wiley   +1 more source

The Performance Gains of Assimilating Limited Information Into a Fully Distributed Snowpack Model Depend on Model Complexity and Input Data Quality

Water Resources Research
Estimating snowpack conditions in mountainous regions is critical for water resource management, flood forecasting, and avalanche hazard mitigation. However, most snowpack observations lack either spatial or temporal resolution, while estimates from ...
Moritz Oberrauch, Bertrand Cluzet, Jan Magnusson, Tobias Jonas   +3 more
doaj   +1 more source

Ultra‐High‐Efficiency On‐Chip CO2 Conversion by Nanosecond Self‐Pulsing Micro‐Plasma Devices

Carbon Energy, EarlyView.
A micro‐plasma chip with sub‐10‐μm electrode gaps is introduced for efficient CO2‐to‐CO conversion. The device self‐converts a DC power supply into nanosecond pulses, producing field‐emission electrons that vibrationally excite CO2, driving dissociation via the ladder‐climbing mechanism. A scaled‐up chip array achieves 30% single‐pass conversion and 50%
Guangyu Sun, Bartu Karakurt, Hongkeng Zhu, Onder Soydal, Jeremy S. Luterbacher, Elison Matioli   +5 more
wiley   +1 more source

Improving Fully Distributed Snowpack Simulations by Mapping Perturbations of Meteorological Forcings Inferred From Particle Filter Assimilation of Snow Monitoring Data

Water Resources Research
Snow plays a crucial role in the water balance of mountainous regions by affecting the timing and magnitude of runoff and, thus, water availability and flood hazards.
Moritz Oberrauch, Bertrand Cluzet, Jan Magnusson, Tobias Jonas   +3 more
doaj   +1 more source

Dislocation avalanche correlations

, 2003
Recently, mechanical tests on ice as well as dislocation dynamics simulations have revealed that plastic flow displays a scale-free intermittent dynamics characterized by dislocation avalanches with a power law distribution of amplitudes.
Miguel, M. -Carmen, Weiss, Jerome
core   +1 more source

Ag‐Induced Phase and Defect Engineering of Co‐Evaporated Sb2Se3 Thin Films for Enhanced Photovoltaic Performance

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
The sequential formation of Ag2Se and AgSbSe2 phases at the Sb2Se3/Mo interface upon Ag incorporation in co‐evaporated Sb2Se3 solar cells promotes grain growth and defect passivation. These newly formed intermediate phases enhance crystallinity and suppress recombination, leading to significant improvements in open‐circuit voltage, fill factor, and ...
Van‐Quy Hoang, Jaebaek Lee, Bashiru Kadiri‐English, Eunkyung Cho, Amanat Ali, Naveen Kumar, Evgeniia Gilshtein, Stela Canulescu, Dae‐Ho Son, Hyesun Yoo, Vo Pham Hoang Huy, Quynh Le‐Van, Dae‐Kue Hwang, Jin‐Kyu Kang, Kee‐Jeong Yang, Shi‐Joon Sung, Dae‐Hwan Kim   +16 more
wiley   +1 more source

Estimating the effective elastic modulus and specific fracture energy of snowpack layers from field experiments

Journal of Glaciology, 2016
Measurements of the mechanical properties of snow are essential for improving our understanding and the prediction of snow failure and hence avalanche release. We performed fracture mechanical experiments in which a crack was initiated by a saw in a weak
ALEC VAN HERWIJNEN, JOHAN GAUME, EDWARD H. BAIR, BENJAMIN REUTER, KARL W. BIRKELAND, JÜRG SCHWEIZER   +5 more
doaj   +1 more source

Value‐Based Neuromonitoring in Thyroidectomy: A Comprehensive Cost–Utility Analysis

The Laryngoscope, EarlyView.
ABSTRACT Objective To compare the cost–utility of major intraoperative neuromonitoring (IONM) strategies in thyroidectomy across commercial platforms, and to quantify the impact of continuous IONM (CIONM), automated nerve trend monitoring, postoperative laryngoscopy policy, and technical failure on total episode costs and medicolegal burden.
Daqi Zhang, Francesco Brucchi, Carla Colombo, Roberto Cirocchi, Gianlorenzo Dionigi   +4 more
wiley   +1 more source

Advances in Position‐Momentum Entanglement: A Versatile Tool for Quantum Technologies

Laser &Photonics Reviews, EarlyView.
Position–momentum entanglement constitutes a high‐dimensional continuous‐variable resource in quantum optics. Recent advances in its generation, characterization, and control are reviewed, with emphasis on spontaneous parametric down‐conversion and modern measurement techniques.
Satyajeet Patil, Rajshree Swarnkar, Jonas L. Moos, Sebastian Töpfer, Sergio Tovar‐Pérez, Jorge Fuenzalida, Markus Gräfe   +6 more
wiley   +1 more source