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Steady-state turbulent motion is created in superfluid 3He-B at low temperatures in the form of a turbulent vortex front, which moves axially along a rotating cylindrical container of 3He-B and replaces vortex-free flow with vortex lines at…

Other Condensed Matter · Physics 2013-05-29 J. J. Hosio , V. B. Eltsov , R. de Graaf , P. J. Heikkinen , R. Hanninen , M. Krusius , V. S. L'vov , G. E. Volovik

The effect of pressure on structural and thermodynamic properties of ice Ih has been studied by means of path-integral molecular dynamics simulations at temperatures between 50 and 300 K. Interatomic interactions were modeled by using the…

Materials Science · Physics 2012-01-05 Carlos P. Herrero , Rafael Ramirez

The Central Molecular Zone (CMZ) at the center of our Galaxy is the best template to study star formation processes under extreme conditions, similar to those in high-redshift galaxies. We observed on-the-fly maps of para-H$_{2}$CO…

Astrophysics of Galaxies · Physics 2016-11-09 K. Immer , J. Kauffmann , T. Pillai , A. Ginsburg , K. M. Menten

The study is focussed towards understanding the difference in behaviour of forsterite droplets subjected to sub-atmospheric conditions. Melt droplets, 1.5-2.5 mm in diameter, are made to crystallize under levitated conditions. The spherule…

Applied Physics · Physics 2020-08-18 Biswajit Mishra , Prateek Manvar , Kaushik Choudhury , S. Karagadde , Atul Srivastava

We report a computer simulation study of the glass transition for water. To mimic the difference between standard and hyperquenched glass, we generate glassy configurations with different cooling rates and calculate the $T$ dependence of…

Soft Condensed Matter · Physics 2016-08-31 Nicolas Giovambattista , C. Austen Angell , Francesco Sciortino , H. Eugene Stanley

Molecular dynamic simulations were employed to study a water-like model confined between hydrophobic and hydrophilic plates. The phase behavior of this system is obtained for different distances between the plates and particle-plate…

Soft Condensed Matter · Physics 2015-06-17 Leandro B. Krott , Marcia C. Barbosa

Concentrated aqueous solutions of the protein lysozyme undergo a liquid solid transition upon a temperature quench into the unstable spinodal region below a characteristic arrest temperature of Tf=15C. We use video microscopy and…

Soft Condensed Matter · Physics 2015-05-13 Thomas Gibaud , Peter Schurtenberger

It is an open question why the temperature of molecular gas in the Galactic center region is higher than that of dust. To address this problem, we made simultaneous observations in the NH_3 (J,K) = (1,1), (2,2), and (3,3) lines of the…

We present results of molecular dynamics (MD) simulations for a non-entangled polymer melt confined between two completely smooth and repulsive walls, interacting with inner particles via the potential $U_{\rm wall}\myeq (\sigma/z)^9$,…

Soft Condensed Matter · Physics 2009-11-07 F. Varnik , J. Baschnagel , K. Binder

We have studied the microscopic dynamics of hydrogen adsorbed to bundles of single walled carbon nanotubes using inelastic neutron scattering. Evidence is obtained for much higher storage capacities in chemically treated compared to as…

Materials Science · Physics 2009-11-10 B. Renker , H. Schober , P. Schweiss , S. Lebedkin , F. Hennrich

We investigate the possibilities of distinguishing the mean-field and fluctuation effects on the critical temperature of a trapped Bose gas with repulsive interatomic interactions. Since in a direct measurement of the critical temperature…

Statistical Mechanics · Physics 2014-10-13 M. Houbiers , H. T. C. Stoof , E. A. Cornell

Methane ebullition (bubbling) from lake sediments is an important methane flux into the atmosphere. Previous studies have focused on the open-water season, showing that temperature variations, pressure fluctuations and wind-induced currents…

Atmospheric and Oceanic Physics · Physics 2021-05-14 K. Zhao , E. W. Tedford , M. Zare , G. A. Lawrence

We develop a one-dimensional mathematical model for the loading process of hydrogen in a metal hydride tank. The model describes the evolution of the density and pressure of the hydrogen gas, the temperature of the tank, the averaged…

Materials Science · Physics 2025-07-31 Francesc Font , Attila Husar , Tim Myers , Maria Aguareles , Esther Barrabés

We report on hydrogen adsorption and desorption on titanium-covered graphene in order to test theoretical proposals to use of graphene functionalized with metal atoms for hydrogen storage. At room temperature titanium islands grow with an…

Chemical Physics · Physics 2013-12-06 Torge Mashoff , Makoto Takamura , Shinichi Tanabe , Hiroki Hibino , Fabio Beltram , Stefan Heun

We use large-scale molecular dynamics simulations of a simple glass-forming system to investigate how its liquid-gas phase separation kinetics depends on temperature. A shallow quench leads to a fully demixed liquid-gas system whereas a…

Disordered Systems and Neural Networks · Physics 2014-05-16 Vincent Testard , Ludovic Berthier , Walter Kob

This article presents a computational study of saturated flow boiling in non-circular microchannels. The unit channel of a multi-microchannel evaporator, consisting of the fluidic channel and surrounding evaporator walls, is emulated and…

Fluid Dynamics · Physics 2022-03-18 F. Municchi , I. El Mellas , O. K. Matar , M. Magnini

The process of formation for an ice crystal with elaborate, symmetrical patterns from the water vapor is usually complicated and the corresponding mechanism is still not clear. Here, we experimentally constructed the 3D tubular ice crystals…

Applied Physics · Physics 2020-11-03 Xiaolu Zhu , Zheng Wang

We study heat transfer from a heated nanoparticle into surrounding fluid, using molecular dynamics simulations. We show that the fluid next to the nanoparticle can be heated well above its boiling point without a phase change. Under…

Materials Science · Physics 2009-12-17 Samy Merabia , Pawel Keblinski , Laurent Joly , Laurent Lewis , Jean-Louis Barrat

Direct numerical simulations are carried out to investigate the effect of the wall temperature on the behavior of oblique shock-wave/turbulent boundary layer interactions at freestream Mach number $2.28$ and shock angle of the wedge…

Fluid Dynamics · Physics 2016-06-15 Matteo Bernardini , Johan Larsson , Sergio Pirozzoli , Francesco Grasso

We report new accurate mesasurements of the mobility of excess electrons in high density Helium gas in extended ranges of temperature $[(26\leq T\leq 77) K ]$ and density $[ (0.05\leq N\leq 12.0) {atoms} \cdot {nm}^{-3}]$ to ascertain the…

Plasma Physics · Physics 2016-09-08 A. F. Borghesani , M. Santini
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