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Recent experimental and theoretical results have shown the existence of a liquid-liquid phase transition in isotropic systems, such as biological solutions and colloids, whose interaction can be represented via an effective potential with a…

We present a comprehensive numerical study of the phase behavior and dynamics of a three-dimensional active dumbbell system with attractive interactions. We demonstrate that attraction is essential for the system to exhibit nontrivial…

软凝聚态物质 · 物理学 2024-01-10 C. B. Caporusso , G. Negro , A. Suma , P. Digregorio , L. N. Carenza , G. Gonnella , L. F. Cugliandolo

We study the phase behaviour of a fluid composed of particles which interact via a pair potential that is repulsive for large inter-particle distances, is attractive at intermediate distances and is strongly repulsive at short distances…

软凝聚态物质 · 物理学 2008-09-17 A. J. Archer , C. Ionescu , D. Pini , L. Reatto

We study colloidal particle dynamics of a model glass system using confocal and fluorescence microscopy as the sample evolves from a hard-sphere glass to a liquid with attractive interparticle interactions. The transition from hard-sphere…

软凝聚态物质 · 物理学 2015-05-13 Andrzej Latka , Yilong Han , Ahmed M. Alsayed , Andrew B. Schofield , A. G. Yodh , Piotr Habdas

We study closed liquid membranes that segregate into three phases due to differences in the chemical and physical properties of its components. The shape and in-plane membrane arrangement of the phases are coupled through phase-specific…

软凝聚态物质 · 物理学 2012-08-17 Matthew F. Demers , Rastko Sknepnek , Monica Olvera de la Cruz

The phase behavior of stabilized dispersions of macromolecules is most easily described in terms of the effective interaction between the centers of mass of solute particles. For molecules like polymer chains, dendrimers, etc., the…

软凝聚态物质 · 物理学 2015-11-17 Gianpietro Malescio , Santi Prestipino

We study numerically a model for active suspensions of self-propelled repulsive particles, for which a stable phase separation into a dilute and a dense phase is observed. We exploit that for non-square boxes a stable "slab" configuration…

统计力学 · 物理学 2015-09-02 Julian Bialké , Hartmut Löwen , Thomas Speck

We numerically investigate the competition between phase separation and dynamical arrest in a colloidal system interacting via a short ranged attractive potential. Equilibrium fluid configurations are quenched at two different temperatures…

软凝聚态物质 · 物理学 2007-05-23 G. Foffi , C. De Michele , F. Sciortino , P. Tartaglia

We experimentally study the condensed phases of repelling core-softened spheres in two dimensions. The dipolar pair repulsion between superparamagnetic spheres trapped in a thin cell is induced by a transverse magnetic field and softened by…

软凝聚态物质 · 物理学 2011-11-10 N. Osterman , D. Babič , I. Poberaj , J. Dobnikar , P. Ziherl

In the present article we carry out a molecular dynamics study of the core-softened system and show that the existence of the water-like anomalies in this system depends on the trajectory in $P-\rho-T$ space along which the behavior of the…

软凝聚态物质 · 物理学 2015-05-28 Yu. D. Fomin , V. N. Ryzhov , E. N. Tsiok

In the framework of the density functional theory of freezing proposed in our previous works, we calculate the phase diagram of two-dimensional system of particles interacting through the repulsive shoulder potential. This potential…

统计力学 · 物理学 2015-06-23 E. S. Chumakov , Yu. D. Fomin , E. L. Shangina , E. E. Tareyeva , E. N. Tsiok , V. N. Ryzhov

Soft particulate glasses are dense suspensions of jammed particles that flow like liquids under external shear and recover their solid-like properties almost instantly upon flow cessation. Here, we consider a dense suspension of core-shell…

软凝聚态物质 · 物理学 2024-10-16 Justine Henry , Ludovic Feige , Clara Paillard , Thibaut Divoux

Conformational phases of a semiflexible off-lattice homopolymer model near an attractive substrate are investigated by means of multicanonical computer simulations. In our polymer-substrate model, nonbonded pairs of monomers as well as…

计算物理 · 物理学 2009-07-20 Monika Möddel , Michael Bachmann , Wolfhard Janke

Extensive molecular dynamics simulation studies of particles interacting via a short ranged attractive square-well (SW) potential are reported. The calculated loci of constant diffusion coefficient $D$ in the temperature-packing fraction…

软凝聚态物质 · 物理学 2009-11-07 G. Foffi , K. A. Dawson , S. V. Buldyrev , F. Sciortino , E. Zaccarelli , P. Tartaglia

Adsorption at an attractive surface in a system with particles self-assembling into small clusters is studied by Molecular dynamics (MD) simulation. We assume Lennard-Jones plus repulsive Yukawa tail interactions, and focus on small…

统计力学 · 物理学 2019-07-01 Marek Litniewski , Alina Ciach

The nature of the interaction of a soliton with an attractive well is elucidated using a model of two interacting point particles. The model explains the existence of trapped states at positive kinetic energy, as well as reflection by an…

高能物理 - 理论 · 物理学 2007-05-23 G. Kälbermann

We investigate the thermodynamic, structural, and dynamic behavior of a three-dimensional coarse-grained ramp-shoulder fluid derived from effective interactions between polymer-grafted nanoparticles. The interaction combines a softened…

We report Monte Carlo results for the fluid structure of a system of dimeric particles interacting via a core-softened potential. More specifically, dimers interact through a repulsive pair potential of inverse-power form, modified in such…

软凝聚态物质 · 物理学 2016-03-08 Gianmarco Munaò , Franz Saija

We study binary mixtures of small active and big passive athermal particles interacting via soft repulsive forces on a frictional substrate. Athermal self propelled particles are known to phase separate into a dense aggregate and a dilute…

软凝聚态物质 · 物理学 2018-07-05 Pritha Dolai , Aditi Simha , Shradha Mishra

We study, by using liquid-state theories and Monte Carlo simulation, the behavior of systems of classical particles interacting through a finite pair repulsion supplemented with a longer range attraction. Any such potential can be driven…

软凝聚态物质 · 物理学 2018-04-27 Gianpietro Malescio , Alberto Parola , Santi Prestipino