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We study the coalescence of nanoscale metal clusters in an inert-gas atmosphere using constant-energy molecular dynamics. The coalescence proceeds via atomic diffusion with the release of surface energy raising the temperature. If the…

Condensed Matter · Physics 2007-05-23 Shaun C. Hendy , Simon A. Brown , Michael Hyslop

By holographic duality, we identify a novel dynamical phase transition which results from the temperature dependence of non-equilibrium dynamics of dark solitons in a superfluid.For a non-equilibrium superfluid system with an initial…

High Energy Physics - Theory · Physics 2020-01-29 Minyong Guo , Esko Keski-Vakkuri , Hong Liu , Yu Tian , Hongbao Zhang

The interest to foster plasmonic applications at energies in the ultra-violet, has escalated research initiatives in clusters of unconventional plasmonic materials like aluminum and indium,for which the surface-plasmon resonance appears…

The high frequency dynamics of low- (LDA) and high-density amorphous-ice (HDA) and of cubic ice (I_c) has been measured by inelastic X-ray Scattering (IXS) in the 1-15 nm^{-1} momentum transfer (Q) range. Sharp phonon-like excitations are…

Statistical Mechanics · Physics 2009-10-31 H. Schober , M. M. Koza , A. Toelle , C. Masciovecchio , F. Sette , F. Fujara

Plasma enhanced atomic layer deposition was used to deposit thin films of Ga2O3 on to c-plane sapphire substrates using triethylgallium and O2 plasma. The influence of substrate temperature and plasma processing parameters on the resultant…

We investigate the phase structure of homogeneous and inhomogeneous neutron-proton condensate in isospin asymmetric nuclear matter. At extremely low nuclear density the condensed matter is in homogeneous phase at any temperature, while in…

Nuclear Theory · Physics 2018-04-24 Meng Jin , Lianyi He , Pengfei Zhuang

The relationship between a decaying strong turbulence and kinetic instabilities in a slowly expanding plasma is investigated using two-dimensional (2-D) hybrid expanding box simulations. We impose an initial ambient magnetic field…

The structure of the recently identified metastable ice XVII, obtained by release of hydrogen from the C$_0$ D$_2$O-H$_2$ compound (filled ice), has been accurately measured by neutron powder diffraction. The diffraction pattern is indexed…

Alpha-particle (quartet) condensation in homogeneous spin-isospin symmetric nuclear matter is investigated. The usual Thouless criterion for the critical temperature is extended to the quartet case. The in-medium four-body problem is…

Nuclear Theory · Physics 2009-08-03 T. Sogo , G. Röpke , P. Schuck

A theoretical model of the formation of an amorphous phase during the quenching of a metallic melt is proposed. It has been shown that the appearance of a significant temperature gradient during the quenching of a metallic melt leads to…

Materials Science · Physics 2025-04-29 A. I. Karasevskii , A. Yu. Naumuk

It is shown that due to the smallness of the inelastic cross-section of the $d\mu$-atoms scattering in the crystal lattice at sufficiently low temperatures the $dd\mu$-mesomolecules formation from the upper state of the hyperfine structure…

High Energy Physics - Phenomenology · Physics 2009-11-07 S. S. Gershtein

Amorphous silica density at ambient pressure is known to depend on thermal history (through the quenching rate) but also, at room temperature, on the maximum pressure applied in the past. Here we show that beyond density, a mechanical…

Other Condensed Matter · Physics 2009-05-15 Cindy Linn Rountree , Damien Vandembroucq , Mehdi Talamali , Elisabeth Bouchaud , Stéphane Roux

Using molecular dynamics simulation technique, we have studied the melting behaviours of free, icosahedral PtN clusters in the size range of N=12-14. Voter and Chen version of an embedded-atom model, derived by fitting to experimental data…

Atomic and Molecular Clusters · Physics 2009-11-10 Ali Sebetci , Ziya B. Guvenc

We present X-ray spatial and spectral analysis of the Chandra data from the central 400 kpc (H0 = 50 km/s/Mpc) of the cluster of galaxies Abell 1795. The plasma temperature rises outwards by a factor of 3, whereas the iron abundance…

Astrophysics · Physics 2008-11-26 S. Ettori , A. C. Fabian , S. W. Allen , R. M. Johnstone

In this work, we investigate the correlation between morphology, composition, and the mechanical properties of metallic amorphous tungsten-oxygen and amorphous tungsten-oxide films deposited by Pulsed Laser Deposition. This correlation is…

Materials Science · Physics 2019-01-08 Edoardo Besozzi , David Dellasega , Valeria Russo , Matteo Passoni , Marco Beghi

Microwave heating of methane hydrate is investigated with electrostatic molecular dynamics simulations by the SPC/E water model. The structure I of methane hydrate is constructed. When the methane hydrate with a density of 0.91…

Chemical Physics · Physics 2023-11-27 Motohiko Tanaka , Motoyasu Sato , Shin Nakatani

Recent experiments have shown that sodium, a prototype simple metal at ambient conditions, exhibits unexpected complexity under high pressure. One of the most puzzling phenomena in the behaviour of dense sodium is the pressure-induced drop…

Materials Science · Physics 2015-05-30 Hagai Eshet , Rustam Z. Khaliullin , Thomas D. Kühne , Jörg Behler , Michele Parrinello

Manganese, in the a-Mn structure, has been studied using synchrotron powder x-ray diffraction in a diamond anvil cell up to 220 GPa at room temperature combined with density functional calculations (DFT). The experiment reveals an extended…

We reexamine the scenario of homogeneous nucleation of the quark-gluon plasma produced in ultra-relativistic heavy ion collisions. A generalization of the standard nucleation theory to rapidly expanding system is proposed. The nucleation…

High Energy Physics - Phenomenology · Physics 2016-08-15 E. E. Zabrodin , L. V. Bravina , L. P. Csernai , H. Stöcker , W. Greiner

Brittle materials exhibit sharp dynamical fractures when meeting Griffith's criterion, whereas ductile materials blunt a sharp crack by plastic responses. Upon continuous pulling ductile materials exhibit a necking instability which is…

Statistical Mechanics · Physics 2012-07-12 Olivier Dauchot , Smarajit Karmakar , Itamar Procaccia , Jacques Zylberg