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We study the relaxation dynamics of a binary liquid mixture near a light-absorbing Janus particle after switching on and off illumination using experiments and theoretical models. The dynamics is controlled by the temperature gradient…

软凝聚态物质 · 物理学 2022-02-02 Takeaki Araki , Juan Ruben Gomez-Solano , Anna Maciołek

We use molecular dynamics computer simulations to investigate the relaxation dynamics of a binary Lennard-Jones liquid confined in a narrow pore. We find that the average dynamics is strongly influenced by the confinement in that time…

统计力学 · 物理学 2009-10-31 Peter Scheidler , Walter Kob , Kurt Binder

The "melting" of self-formed rigid structures made of a small number of interacting classical particles confined in an irregular two-dimensional space is investigated using Monte Carlo simulations. It is shown that the interplay of…

无序系统与神经网络 · 物理学 2013-06-13 Dyuti Bhattacharya , Amit Ghosal

We report extensive simulations of the relaxation dynamics of a self-avoiding polymer confined inside a cylindrical pore. In particular, we concentrate on examining how confinement influences the scaling behavior of the global relaxation…

软凝聚态物质 · 物理学 2009-11-13 A. Arnold , B. Bozorgui , D. Frenkel , B. -Y. Ha , S. Jun

The dynamics of compaction of hard cross-shaped pentamers on the 2D square lattice is investigated. The addition of new particles is controlled by diffusive relaxation. It is shown that the filling process terminates at a glassy phase with…

统计力学 · 物理学 2009-10-31 E. Eisenberg , A. Baram

Many systems, including biological tissues and foams, are made of highly packed units having high deformability but low compressibility. At two dimensions, these systems offer natural tesselations of plane with fixed density, in which…

软凝聚态物质 · 物理学 2019-10-08 Marc Durand , Julien Heu

We discuss orientational order in two dimensions in the context of systems with competing isotropic interactions at different scales. We consider an extension of the Brazovskii model for stripe phases including explicitly quartic terms with…

软凝聚态物质 · 物理学 2009-05-20 Daniel G. Barci , Daniel A. Stariolo

Using numerical simulations, we study the dynamical evolution of particles interacting via competing long-range repulsion and short-range attraction in two dimensions. The particles are compressed using a time-dependent quasi-one…

软凝聚态物质 · 物理学 2017-12-06 D. McDermott , C. J. Olson Reichhardt , C. Reichhardt

We examine the changeover in the particle configurations and the dynamics in dense Lennard-Jones binary mixtures composed of small and large particles. By varying the composition at a low temperature, we realize crystal with defects,…

软凝聚态物质 · 物理学 2011-05-17 Hayato Shiba , Akira Onuki

We investigate by Molecular Dynamics simulation a system of $N$ particles moving on the surface of a two-dimensional sphere and interacting by a Lennard-Jones potential. We detail the way to account for the changes brought by a nonzero…

统计力学 · 物理学 2015-06-18 Julien-Piera Vest , Gilles Tarjus , Pascal Viot

The phase-ordering kinetics of a bulk uniaxial nematic liquid crystal is addressed using techniques that have been successfully applied to describe ordering in the O(n) model. The method involves constructing an appropriate mapping between…

凝聚态物理 · 物理学 2009-10-30 Robert A. Wickham

Numerical simulations of phase ordering under dissipative dynamics in a (2+1)-dimensional 3-vector model with O(3) symmetry are reported. The energy functional includes terms which stabilize the size of extended topological defects. They…

高能物理 - 唯象学 · 物理学 2011-07-19 G. Holzwarth , J. Klomfass

We deeply investigate a simple model representative of the recently synthesized Janus particles, i.e. colloidal spherical particles whose surface is divided into two areas of different chemical composition. When the two surfaces are…

软凝聚态物质 · 物理学 2009-12-21 Francesco Sciortino , Achille Giacometti , Giorgio Pastore

This chapter is devoted to the analysis of jamming and percolation behavior of two-dimensional systems of elongated particles. We consider both continuous and discrete spaces (with the special attention to the square lattice), as well the…

无序系统与神经网络 · 物理学 2020-06-26 Nikolai I. Lebovka , Yuri Yu. Tarasevich

The formation, growth, structure and cluster size distribution (CSD) properties in a two-dimensional system of particles interacting with Lennard-Jones (LJ) potential under controlled cooling condition have been studied using Monte-Carlo…

软凝聚态物质 · 物理学 2018-01-18 Barnana Pal

We study the q-state Potts model on the simple cubic lattice with ferromagnetic interactions in one lattice direction, and antiferromagnetic interactions in the two other directions. As the temperature T decreases, the system undergoes a…

统计力学 · 物理学 2016-09-07 Chengxiang Ding , Henk W. J. Bloete , Youjin Deng

Self-organisation is driven by the interactions between the individual components of a system mediated by the environment, and is one of the most important strategies used by many biological systems to develop complex and functional…

软凝聚态物质 · 物理学 2018-11-07 S. Masoumeh Mousavi , Sabareesh K. P. Velu , Agnese Callegari , Luca Biancofiore , Giovanni Volpe

How condensed-matter simulations depend on the number of molecules being simulated ($N$) is sometimes itself a valuable piece of information. Liquid crystals provide a case in point. Light scattering and $2d$-IR experiments on…

软凝聚态物质 · 物理学 2024-12-20 Eleftherios Mainas , Richard M. Stratt

Continuum models of plasticity fail to capture the richness of microstructural evolution because the continuum is a homogeneous construction. The present study shows that an alternative way is available at the mesoscale in the form of truly…

材料科学 · 物理学 2025-10-01 Afonso D. M. Barroso , Elijah Borodin , Andrey P. Jivkov

We investigate a three-dimensional kinetically-constrained model that exhibits two types of phase transitions at different densities. At the jamming density $ \rho_J $ there is a mixed-order phase transition in which a finite fraction of…

统计力学 · 物理学 2017-06-08 Nimrod Segall , Eial Teomy , Yair Shokef