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相关论文: Large Attractive Depletion Interactions in Soft Re…

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A recently proposed rational-function approximation [Phys. Rev. E \textbf{84}, 041201 (2011)] for the structural properties of nonadditive hard spheres is applied to evaluate analytically (in Laplace space) the local density profiles of…

软凝聚态物质 · 物理学 2013-04-08 Riccardo Fantoni , Andrés Santos

The motility-induced phase separation exhibited by active particles with repulsive interactions is well known. We show that the interaction softness of active particles destabilizes the highly ordered dense phase, leading to the formation…

软凝聚态物质 · 物理学 2022-09-21 Monika Sanoria , Raghunath Chelakkot , Amitabha Nandi

We report the first observation of temperature-controlled reentrant transition in simulations of mixtures of small and big particles interacting via soft repulsive potential in 2D. As temperature increases, the system passes from a fluid…

软凝聚态物质 · 物理学 2022-04-13 Itay Azizi , Alexander Y. Grosberg , Yitzhak Rabin

We consider a fluid of $d$-dimensional spherical particles interacting via a pair potential $\phi(r)$ which takes a finite value $\epsilon$ if the two spheres are overlapped ($r<\sigma$) and 0 otherwise. This penetrable-sphere model has…

统计力学 · 物理学 2015-06-29 L. Acedo , A. Santos

We numerically investigate the dependence of range of attractive potential on the phase separation of 2-D binary systems. Through extensive simulations and analysis, we show that when the range of attractive interactions approaches the…

计算物理 · 物理学 2024-05-14 D. C. Thakur , Jalim Singh , A. V. Anil Kumar

A previously developed fundamental measure fucntional [J. Chem. Phys. vol.107, 6379 (1997)] is used to study the phase behavior of a system of parallel hard cubes. The single-component fluid exhibits a continuous transition to a solid with…

软凝聚态物质 · 物理学 2009-10-31 Y. Martinez-Raton , J. A. Cuesta

We study various manifestations of structural crossover in the properties of a binary mixture of hard-spheres. For homogeneous mixtures that are sufficiently asymmetric, there is a crossover line in the phase diagram such that for…

软凝聚态物质 · 物理学 2009-11-11 C. Grodon , M. Dijkstra , R. Evans , R. Roth

The large-scale dynamics of a two-fluid system with a time dependent interaction is studied analytically and numerically. We show how a rapid transition can significantly suppress the large-scale curvature perturbation and present…

天体物理学 · 物理学 2009-11-11 T. Multamaki , J. Sainio , I. Vilja

In the present paper, using a molecular dynamics simulation, we study a nature of melting of a two-dimensional ($2D$) system of classical particles interacting through a purely repulsive isotropic core-softened potential which is used for…

软凝聚态物质 · 物理学 2015-06-22 D. E. Dudalov , Yu. D. Fomin , E. N. Tsiok , V. N. Ryzhov

We present a systematic simulation campaign to investigate the pairwise interaction of two mobile, monodisperse particles submerged in a viscous fluid and subjected to monochromatic oscillating flows. To this end, we employ the immersed…

流体动力学 · 物理学 2024-03-08 Fabian Kleischmann , Paolo Luzzatto-Fegiz , Eckart Meiburg , Bernhard Vowinckel

Pair potentials that are bounded at the origin provide an accurate description of the effective interaction for many systems of dissolved soft macromolecules (e.g., flexible dendrimers). Using numerical free-energy calculations, we…

软凝聚态物质 · 物理学 2014-10-29 C. Speranza , S. Prestipino , G. Malescio , P. V. Giaquinta

Soft, repulsive run-and-tumble particles display emergent effective interactions as they appear to stick to each other in spite of the absence of attractive forces. This effective attraction emerges at strong enough repulsion and large…

The fundamental measure approach to classical density functional theory has been shown to be a powerful tool to predict various thermodynamic properties of hard-sphere systems. We employ this approach to determine not only one-particle…

软凝聚态物质 · 物理学 2015-11-02 Andreas Härtel , Matthias Kohl , Michael Schmiedeberg

The aim of this paper is to discuss the mathematical modeling of Brownian active particle systems, a recently popular paradigmatic system for self-propelled particles. We present four microscopic models with different types of repulsive…

统计力学 · 物理学 2022-05-31 M. Bruna , M. Burger , A. Esposito , S. M. Schulz

The equilibrium phase behaviour of hard spheres with size polydispersity is studied theoretically. We solve numerically the exact phase equilibrium equations that result from accurate free energy expressions for the fluid and solid phases,…

软凝聚态物质 · 物理学 2007-05-23 M. Fasolo , P. Sollich

Using a fundamental measure density functional theory we investigate both bulk and inhomogeneous systems of the binary non-additive hard sphere model. For sufficiently large (positive) non-additivity the mixture phase separates into two…

软凝聚态物质 · 物理学 2010-07-30 Paul Hopkins , Matthias Schmidt

The behavior of mesoscopic particles dissolved in a dilute solution of long, flexible, and nonadsorbing polymer chains is studied by field-theoretic methods. For spherical and cylindrical particles the solvation free energy for immersing a…

软凝聚态物质 · 物理学 2009-10-31 A. Hanke , E. Eisenriegler , S. Dietrich

We study whether fine discretization (i.e., terracing) of continuous pair interactions, when used in combination with first-order mean-spherical approximation theory, can lead to a simple and general analytical strategy for predicting the…

软凝聚态物质 · 物理学 2013-10-29 Kyle B. Hollingshead , Avni Jain , Thomas M. Truskett

In biomimetic and biological systems, interactions between surfaces are often mediated by adhesive molecules, nanoparticles, or colloids dispersed in the surrounding solution. We present here a general, statistical-mechanical model for two…

软凝聚态物质 · 物理学 2009-11-13 Bartosz Rozycki , Reinhard Lipowsky , Thomas R. Weikl

Dynamical behavior of steady granular flow is investigated numerically in the inelastic hard sphere limit of the soft sphere model. We find distinctively different limiting behaviors for the two flow regimes, i.e., the collisional flow and…

统计力学 · 物理学 2009-11-07 Namiko Mitarai , Hiizu Nakanishi