Results 91 to 100 of about 109,426 (275)

Effect of viscosity and thermal conductivity on the radial oscillation and relaxation of relativistic stars

, 2019
In this paper we present a generic formulation of the linearized dynamical equations governing small adiabatic radial oscillations of relativistic stars.
Barta, Dániel
core   +1 more source

In Materia Shaping of Randomness with a Standard Complementary Metal‐Oxide‐Semiconductor Transistor for Task‐Adaptive Entropy Generation

Advanced Functional Materials, EarlyView.
This study establishes a materials‐driven framework for entropy generation within standard CMOS technology. By electrically rebalancing gate‐oxide traps and Si‐channel defects in foundry‐fabricated FDSOI transistors, the work realizes in‐materia control of temporal correlation – achieving task adaptive entropy optimization for reinforcement learning ...
Been Kwak, Ryun‐Han Koo, Youngchan Cho, Changhyeon Han, Dongbin Kim, Soi Jeong, Yunho Shin, Joonhyeok Choi, Jiseong Im, Jonghyun Ko, Jong‐Ho Lee, Jangsaeng Kim, Youngho Kang, Wonjun Shin, Daewoong Kwon   +14 more
wiley   +1 more source

Many-Body Dynamics and Decoherence of the XXZ Central Spin Model in External Magnetic Field

Entropy, 2019
The many-body dynamics of an electron spin−1/2 qubit coupled to a bath of nuclear spins by hyperfine interactions, as described by the central spin model in two kinds of external field, are studied in this paper.
Xu Zhou, Qing-Kun Wan, Xiao-Hui Wang
doaj   +1 more source

Relaxation of self-oscillation during the combustion of gunpowder in a semiclosed volume [PDF]

Relaxation of self oscillation during combustion of gunpowder in semiclosed ...
Gusenkov, G. N.
core   +1 more source

Coherent shuttle of electron-spin states

, 2017
We demonstrate a coherent spin shuttle through a GaAs/AlGaAs quadruple-quantum-dot array. Starting with two electrons in a spin-singlet state in the first dot, we shuttle one electron over to either the second, third or fourth dot.
Baart, T. A., Fujita, T., Reichl, C., Vandersypen, L. M. K., Wegscheider, W.   +4 more
core   +1 more source

Geometry‐Dependent Adhesion in Transparent Monodomain Liquid Crystal Elastomers

Advanced Functional Materials, EarlyView.
Liquid Crystal Elastomers (LCEs) are emerging as exciting pressure‐sensitive adhesives. We examine adhesion in chemically identical elastomer films, exploring the influence of geometry (director orientation) and phase (nematic or isotropic). We demonstrate the potential of these aligned films as transparent, tunable, broad‐temperature‐range smart ...
Aidan Street, Devesh Mistry, Johan Mattsson, Helen F. Gleeson   +3 more
wiley   +1 more source

Dynamic behavior of stochastic fast-slow fishery economic model with Allee effect

Electronic Journal of Qualitative Theory of Differential Equations
This article investigates a stochastic fast-slow fishery economic model with Allee effect. The fast-slow dynamic behavior of the deterministic system is discussed by using the theory of singular perturbation.
Xiaoqi Han, Yue Zhang
doaj   +1 more source

Modeling and simulation of dynamics and noise of semiconductor lasers under NTSC modulation for use in the CATV technology

Beni-Suef University Journal of Basic and Applied Sciences, 2015
We investigate the dynamics and noise of semiconductor lasers (SLs) subject to analog modulation with the frequency plan of the National Television Standards Committee (NTSC) for use in the community access television (CATV) systems.
Alaa Mahmoud, Safwat W.Z. Mahmoud, Kamal Abdelhady   +2 more
doaj   +1 more source

Atomic‐Level Dual‐Cation Engineering Enables High‐Performance Na4VMn(PO4)3 Cathodes for Sodium‐Ion Batteries

Advanced Functional Materials, EarlyView.
Dual‐cation site engineering unlocks stable and fast sodium storage in Na4VMn(PO4)3 cathodes. Li+ at Na2 suppresses Jahn‐Teller distortion, while K+ at Na1 expands ion channels, enabling synchronized V/Mn redox and quasi‐single‐phase kinetics. This atomic‐level strategy achieves ultralong cycling stability, high‐rate capability, and full cell viability
Jiaze Sun, Xiaoyu Hu, Xianhe Meng, Nengjun Yu, Qiaoling Kang, Lijing Yan, Meiqiang Fan, Chubin Wan, Tingli Ma   +8 more
wiley   +1 more source

Measuring the Internal Temperature of a Levitated Nanoparticle in High Vacuum

, 2018
The interaction of an object with its surrounding bath can lead to a coupling between the object's internal degrees of freedom and its center-of-mass motion. This coupling is especially important for nanomechanical oscillators, which are amongst the most
Frimmer, Martin, Hebestreit, Erik, Novotny, Lukas, Reimann, René   +3 more
core   +1 more source