Search Results - subject:"Hard-sphere"

Thermodynamic scaling law for the diffusion coefficient in hard-sphere system

Bomont, Jean-Marc; Bretonnet, Jean-Louis - In: Physica A: Statistical Mechanics and its Applications 420 (2015) C, pp. 23-27

for the athermal hard-sphere system, over the wide range of packing fraction covering the stable and metastable regimes …

Persistent link: https://www.econbiz.de/10011117822

Mean-field cage theory for the random close packed state of a metastable hard-sphere glass

Wang, Xian-Zhi - In: Physica A: Statistical Mechanics and its Applications 391 (2012) 13, pp. 3566-3573

In 2005, we developed a mean-field cage theory for the freezing of a stable hard-sphere fluid using the character of a … stable hard-sphere fluid, some observations and the mean-configuration approximation [X.Z. Wang, J. Chem. Phys. 122 (2005 … metastable hard-sphere glass. It is found that near the random close packing point, a thermal fluctuation of a cage sets three of …

Persistent link: https://www.econbiz.de/10010591459

Mapping from a fragile glass-forming system to a simpler one near their glass transitions

Tokuyama, Michio; Narumi, Takayuki; Kohira, Eri - In: Physica A: Statistical Mechanics and its Applications 385 (2007) 2, pp. 439-455

near their glass transitions. One is a simulation for a hard-sphere fluid with size polydispersity where the volume …

Persistent link: https://www.econbiz.de/10011057179

Hard sphere gas state equation

Rambaldi, Sandro; Salustri, Giovanna; Benedetti, Carlo - In: Physica A: Statistical Mechanics and its Applications 361 (2006) 1, pp. 180-194

The dynamic evolution of a gas of N hard spheres determines the equation of state once the equilibrium is reached, after a short transient. The system is investigated in the thermodynamic limit. The algorithms based on a tricky management of the collisions list allow to simulate up to N=106...

Persistent link: https://www.econbiz.de/10010589965

Adsorption of electrolyte in a templated hard-sphere matrix. Predictions of the continuum replica Ornstein–Zernike approach

Dominguez, H.; Hribar Lee, B.; Vlachy, V.; Pizio, O. - In: Physica A: Statistical Mechanics and its Applications 324 (2003) 3, pp. 469-483

disordered hard-sphere matrix environment mimicking a microporous adsorbent were studied. The influence of the hard-sphere … for adsorbed electrolyte in an untemplated and a templated hard-sphere matrix was studied. Steric effects due to matrix … confinement are known to have substantial influence on the properties of the annealed electrolyte. Our results showed the hard-sphere …

Persistent link: https://www.econbiz.de/10010873954

Universal effects of collective interactions on long-time self-diffusion coefficients in hard-sphere systems

Tokuyama, Michio; Yamazaki, Hiroyuki; Terada, Yayoi - In: Physica A: Statistical Mechanics and its Applications 328 (2003) 3, pp. 367-379

We investigate how universal the collective behavior, due to the many-body interactions in polydisperse hard-sphere … is found because even the polydisperse hard-sphere systems crystallize without the hydrodynamic interactions for all φ …

Persistent link: https://www.econbiz.de/10011059292

Understanding glassy dynamics from the free-energy landscape

Dasgupta, Chandan - In: Physica A: Statistical Mechanics and its Applications 315 (2002) 1, pp. 299-301

Many interesting features of the dynamics of simple liquids near the glass transition may be understood in terms of properties of the free-energy landscape obtained from numerical studies of a model free-energy functional. Main results obtained from this approach are summarized and a list of...

Persistent link: https://www.econbiz.de/10010591074

The importance of correlations in free-volume models for depletion phenomena

Oversteegen, S.M.; Lekkerkerker, H.N.W. - In: Physica A: Statistical Mechanics and its Applications 310 (2002) 1, pp. 181-196

Two different levels of the free-volume approximation for describing one-dimensional mixtures of hard rods of two different lengths are analysed and tested against the exact solution. The mean-field level free-volume approach, where only the statistically pre-averaged free volume of the larger...

Persistent link: https://www.econbiz.de/10010591300

Effects of spatial heterogeneities on the slow dynamics of density fluctuations near the colloidal glass transition

Tokuyama, Michio; Terada, Yayoi; Oppenheim, Irwin - In: Physica A: Statistical Mechanics and its Applications 307 (2002) 1, pp. 27-40

The effects of spatial heterogeneities on the slow dynamics of density fluctuations are discussed both in an equilibrium colloidal suspension and in a slightly nonequilibrium colloidal suspension. The long-lived, heterogeneous glassy domains appear near the glass transition and influence the...

Persistent link: https://www.econbiz.de/10011062605

On the derivation of a nonlinear stochastic diffusion equation for supercooled colloidal liquids and glasses

Tokuyama, Michio - In: Physica A: Statistical Mechanics and its Applications 294 (2001) 1, pp. 23-43

A formal theory of finding a nonlinear stochastic diffusion equation for density fluctuations in a suspension of colloidal hard spheres, which enables us to study the influence of solvent-mediated hydrodynamic interactions between particles as well as the direct interactions, is presented with...

Persistent link: https://www.econbiz.de/10010589138