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Atmospheric pressure helium plasmas are investigated through molecular dynamics simulations at room temperature (300 K) for various ionization fractions ($\chi_i = 10^{-1} - 10^{-5}$) in the strongly coupled regime (ion coupling parameter,…

Plasma Physics · Physics 2024-10-24 Swati Swagatika Mishra , Pascal Brault , Sudeep Bhattacharjee

We use 2H NMR stimulated-echo spectroscopy to measure two-time correlation functions characterizing the polymer segmental motion in polymer electrolytes PPO-LiClO4 near the glass transition temperature Tg. To investigate effects of the salt…

Materials Science · Physics 2009-11-11 Michael Vogel , Thorsten Torbruegge

OH radicals play a key role as an intermediate in the water formation chemistry of the interstellar medium. For example the reaction of OH radicals with H$_2$ molecules is among the final steps in the astrochemical reaction network starting…

Astrophysics of Galaxies · Physics 2017-08-21 Jan Meisner , Thanja Lamberts , Johannes Kästner

In composed quantum systems, the presence of local dissipative channels causes loss of coherence and entanglement at a rate that grows with the temperature of the reservoirs. However, here we show that if temperature is artificially added…

Quantum Physics · Physics 2015-03-17 Andre R. R. Carvalho , Marcelo França Santos

Utilising Car-Parrinello molecular dynamics simulations, the finite temperature behaviour of water trimers, (H2O)3, in both neutral and anionic frameworks, has been investigated. A significant structural change in the anionic structure has…

Atomic and Molecular Clusters · Physics 2014-02-25 J. M. Finn , F. Baletto

In this work we investigate Ising and classical Heisenberg models for two and three dimensional lattices in presence of diluted ferromagnetic dimers. For such models the Curie temperature as a function of ratio of intra-dimer exchange…

Strongly Correlated Electrons · Physics 2010-08-20 M. V. Medvedev , I. A. Nekrasov

In this short note, we present some work on investigating electron temperatures and potentials in steady or unsteady dilute plasma flows. The analysis is based on the detailed fluid model for electrons. Ionization, normalized electron…

Plasma Physics · Physics 2023-12-27 Shiying Cai , Chunpei Cai , Xin He

Simulation results are presented to demonstrate electron temperature and electrical potential development in dilute and cold plasma development. The simulation method is a hybrid method which adopted fluid model for electrons due to their…

Plasma Physics · Physics 2024-09-13 Shiying Cai , Chunpei Cai , Zhen Zhang

Correlated anion and cation motion can significantly reduce the overall ion conductivity in electrolytes versus the ideal conductivity calculated based on the diffusion constants alone. Using coarse-grained molecular dynamics simulations,…

Soft Condensed Matter · Physics 2020-06-01 Kuan-Hsuan Shen , Lisa M. Hall

The low luminosity of Uranus is still a puzzling phenomenon and has key implications for the thermal and compositional gradients within the planet. Recent studies have shown that planetary volatiles become ionically conducting under…

Earth and Planetary Astrophysics · Physics 2021-08-10 Deniz Soyuer , Ravit Helled

We show that the activity of an ion channel is strictly related to the phase state of the lipid bilayer hosting the channel. By measuring unitary conductance, dwell times, and open probability of the K+ channel KcsA as a function of…

Biological Physics · Physics 2015-05-19 Heiko M. Seeger , Laura Aldrovandi , Andrea Alessandrini , Paolo Facci

The use of excessively long timesteps in dissipative particle dynamics simulations may produce simulation artifacts due to the generation of configurations which are not representative of the desired canonical ensemble. The configurational…

Statistical Mechanics · Physics 2007-05-23 Michael P. Allen

Relevant information about the nature of the dynamics of ions in electrolytes can be obtained by studying the nonlinear dependence on an applied electric field. Here we use molecular dynamics (MD) simulations to study the field effects for…

Soft Condensed Matter · Physics 2025-03-21 Alina Wettstein , Diddo Diddens , Andreas Heuer

Density Functional Theory calculations are used to investigate the role of substrate-induced cooperative effects on the adsorption of water on a partially oxidized transition metal surface, O(2x2)/Ru(0001). Focussing particularly on the…

Materials Science · Physics 2015-05-19 Pepa Cabrera-Sanfelix , M. V. Fernández-Serra , A. Arnau , D. Sánchez-Portal

Radiative association processes leading to the formation of AgH in cold astrophysical environments are investigated for the first time using full quantum scattering theory. High accuracy potential energy curves and transition dipole moments…

Atomic Physics · Physics 2026-03-27 Lin Jiang , Yu Wang , Yukun Yang , Xuanbing Qiu , Yali Tian , Guqing Guo , Ling Liu , Chuanliang Li , Yong Wu

The weighty evidences of specific transformations of the thermal motion in pure water in the physiological temperature interval (PTI) from (30 +(-) 3)o C to (42 +(-) 3)o C for warm-blooded organisms are presented. It is shown that near the…

Chemical Physics · Physics 2013-07-30 Leonid A. Bulavin , Anatoliy I. Fisenko , Nikolay P. Malomuzh

We present a model for the rate of temperature relaxation between electrons and ions in plasmas. The model includes self-consistently the effects of particle screening, electron degeneracy and correlations between electrons and ions. We…

Plasma Physics · Physics 2015-05-13 Jérôme Daligault , Guy Dimonte

In low-permeability porous media, the velocity of a fluid flow exhibits a nonlinear dependence on the imposed pressure gradient. This non-Darcian flow behavior has important implications to geological disposal of nuclear waste, hydrocarbon…

Geophysics · Physics 2022-08-05 Yuntian Teng , Yifeng Wang , Zihao Li , Rui Qiao , Cheng Chen

We investigate the fast ion effects on the threshold conditions of ion temperature gradient (ITG) mode and electron temperature gradient (ETG) mode both analytically and numerically using gyrokinetic equation. The onset condition for ITG…

Plasma Physics · Physics 2026-05-22 Min Ki Jung , Taik Soo Hahm , Yong-Su Na , Eisung Yoon

This study investigates the interfacial tension, fluid mobility, and crystallization behavior of various saline and additive-modified solutions in a microfluidic chip environment, simulating pore-scale processes during CO2 injection. The…