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The nonlinear rheological properties of dense suspensions are discussed within simplified models, suggested by a recent first principles approach to the model of Brownian particles in a constant-velocity-gradient solvent flow. Shear…

软凝聚态物质 · 物理学 2015-06-24 Matthias Fuchs , Michael E. Cates

A comprehensive study is presented on the short-time dynamics in suspensions of charged colloidal spheres. The explored parameter space covers the major part of the fluid-state regime, with colloid concentrations extending up to the…

软凝聚态物质 · 物理学 2011-10-20 Marco Heinen , Adolfo J. Banchio , Gerhard Nägele

In this work, the Thermodynamic Geometry (TG) of quantum fluids (QF) is analyzed. We present results for two models. The first one is a quantum hard-sphere fluid (QHS) whose Helmholtz free energy is obtained from Path Integrals Monte Carlo…

We use molecular dynamics simulations to test integral equation theory predictions for the structure of fluids of spherical particles with eight different piecewise-constant pair interaction forms comprising a hard core and a combination of…

软凝聚态物质 · 物理学 2015-05-01 Kyle B. Hollingshead , Thomas M. Truskett

The structure of polydisperse hard sphere fluids, in the presence of a wall, is studied by the Rosenfeld density functional theory. Within this approach, the local excess free energy depends on only four combinations of the full set of…

软凝聚态物质 · 物理学 2009-10-31 I. Pagonabarraga , M. E. Cates , G. J. Ackland

We study equilibrium properties of a system of particles in two dimensions, interacting with pair and three body potentials, which undergoes a structural transition from a square to a rhombic lattice and thus constitutes a simple model for…

材料科学 · 物理学 2009-11-07 Madan Rao , Surajit Sengupta

Results of the idealized mode-coupling theory for the structural relaxation in suspensions of hard-sphere colloidal particles are presented and discussed with regard to recent light scattering experiments. The structural relaxation becomes…

软凝聚态物质 · 物理学 2009-10-31 M. Fuchs , M. R. Mayr

The connection between fundamental interactions acting in molecules in a fluid and macroscopically measured properties, such as the viscosity between colloidal particles coated with polymers, is studied here. The role that hydrodynamic and…

软凝聚态物质 · 物理学 2015-09-02 A. Gama Goicochea , M. A. Balderas Altamirano , R. Lopez-Esparza , M. A. Waldo , E. Perez

In the preceding paper, linear response methods have been applied to obtain formally exact expressions for the parameters of Navier-Stokes order hydrodynamics. The analysis there is general, applying to both normal and granular fluids with…

统计力学 · 物理学 2007-05-23 Aparna Baskaran , James W. Dufty , J. Javier Brey

We characterize a system of hard spheres with a simple collision rule that breaks time reversal symmetry, but conserves energy. The collisions lead to an a-chiral, isotropic, and homogeneous stationary state, whose properties are determined…

统计力学 · 物理学 2022-09-21 Niklas Grimm , Annette Zippelius , Matthias Fuchs

The nonlinear rheological properties of dense colloidal suspensions under steady shear are discussed within a first principles approach. It starts from the Smoluchowski equation of interacting Brownian particles in a given shear flow,…

软凝聚态物质 · 物理学 2008-10-15 Matthias Fuchs

The effects of particle roughness and short-ranged non-central forces on colloidal gels are studied using computer simulations in which particles experience a sinusoidal variation in energy as they rotate. The number of minima $n$ and…

软凝聚态物质 · 物理学 2019-09-05 Hong T. Nguyen , Alan L. Graham , Peter H. Koenig , Lev D. Gelb

Responsive particles, such as biomacromolecules or hydrogels, display a broad and polymodal distribution of conformations and have thus the ability to change their properties (e.g, size, shape, charge density, etc.) substantially in…

软凝聚态物质 · 物理学 2020-10-28 Yi-Chen Lin , Benjamin Rotenberg , Joachim Dzubiella

We propose a transform method from a force curve obtained by a surface force apparatus (SFA) to a density distribution of a liquid on a surface of the SFA probe. (We emphasize that the transform method is a theory for the experiment.) In…

化学物理 · 物理学 2014-12-09 Ken-ichi Amano , Eisuke Tanaka

A thermodynamic analysis of weakly nonlocal non-relativistic fluids is presented under the assumption that an additional scalar field also contributes to the dynamics. The most general evolution of this field and the constitutive relations…

广义相对论与量子宇宙学 · 物理学 2025-12-30 Mátyás Szücs , Péter Ván

We have given theoretical expressions for the forces exerted on a quasi-2D flat and smooth solid plate immersed into a liquid pool of a simple liquid. All forces given by the theory, the local forces on the top, the contact line and the…

化学物理 · 物理学 2020-08-26 Yuta Imaizumi , Takeshi Omori , Hiroki Kusudo , Carlos Bistafa , Yasutaka Yamaguchi

We study the dynamics of colloidal suspensions of hard spheres that are subject to Brownian motion in the overdamped limit. We obtain the time evolution of the self and distinct parts of the van Hove function by means of dynamical density…

软凝聚态物质 · 物理学 2018-01-16 Daniel Stopper , Kevin Marolt , Hendrik Hansen-Goos , Roland Roth

The Frenkel-Kontorova model is a simple yet generic framework for the description of tribological phenomena and processes, including dry solid friction and the motion of adsorbed layers. As revealed in this work, it also reproduces…

软凝聚态物质 · 物理学 2025-07-22 Shubham Agarwal , Martin H. Müser

An event-driven molecular dynamics simulation of inelastic hard spheres contained in a cylinder and subject to strong vibration reproduces accurately experimental results[1] for a system of vibrofluidized glass beads. In particular, we are…

统计力学 · 物理学 2009-11-07 J. Talbot , P. Viot

Liquids in contact with solids are submitted to intermolecular forces making liquids heterogeneous and stress tensors are not any more spherical as in homogeneous bulks. The aim of this article is to show that a square-gradient functional…

经典物理 · 物理学 2017-08-23 Henri Gouin