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Motivated by recent experimental studies probing i) the existence of a mobile layer at the free surface of glasses, and ii) the capillary leveling of polymer nanofilms, we study the evolution of square-wave patterns at the free surface of a…

软凝聚态物质 · 物理学 2019-09-18 Ioannis Tanis , Kostas Karatasos , Thomas Salez

Competing short-range attractive (SA) and long range repulsive (LR) interactions have been invoked to describe colloid or protein solutions, as well as membrane proteins interactions mediated by lipid molecules. Using Langevin dynamics…

软凝聚态物质 · 物理学 2025-05-26 Zihan Tan , Vania Calandrini , Jan K. G. Dhont , Gerhard Nägele

Isomorphs are curves in the thermodynamic phase diagram of invariant excess entropy, structure, and dynamics, while pseudoisomorphs are curves of invariant structure and dynamics, but not of the excess entropy. The latter curves have been…

软凝聚态物质 · 物理学 2024-10-30 Zahraa Sheydaafar , Jeppe C. Dyre , Thomas B. Schrøder

A weakly magnetized neutron star (NS) undergoing disk accretion should release about a half of its power in a compact region known as the accretion boundary layer. Latitudinal spread of the accreted matter and efficient radiative cooling…

高能天体物理现象 · 物理学 2025-05-08 Aleksandr Rusakov , Pavel Abolmasov , Omer Bromberg

We use molecular dynamics (MD) to simulate an unstable homogeneous mixture of binary fluids (AB), confined in a slit pore of width $D$. The pore walls are assumed to be flat and structureless, and attract one component of the mixture (A)…

无序系统与神经网络 · 物理学 2009-11-11 S. K. Das , S. Puri Jawaharlal , J. Horbach , Kurt Binder

Many systems in nature and the synthetic world involve ordered arrangements of units on two-dimensional surfaces. We review here the fundamental role payed by both the topology of the underlying surface and its detailed curvature. Topology…

软凝聚态物质 · 物理学 2009-07-31 Mark J. Bowick , Luca Giomi

We analyze the properties of a Lennard-Jones system at the level of the potential energy landscape. After an exhaustive investigation of the topological features of the landscape of the systems, obtained studying small size sample, we…

无序系统与神经网络 · 物理学 2016-08-31 L. Angelani , G. Parisi , G. Ruocco , G. Viliani

Depositions of amorphous Lennard-Jones clusters on a crystalline surface are numerically investigated. From the results of the molecular dynamics simulation, we found that the deposited clusters exhibit a transition from multilayered…

介观与纳米尺度物理 · 物理学 2009-12-03 Kuniyasu Saitoh , Hisao Hayakawa

In this paper we study the formation of nanodrops on curved surfaces (both convex and concave) by means of molecular dynamics simulations, where the particles interact via a Lennard-Jones potential. We find that the contact angle is not…

流体动力学 · 物理学 2017-07-14 Shantanu Maheshwari , Martin van der Hoef , Detlef Lohse

The evolution of shapes and low-energy shape coexistence is analyzed in neutron-deficient Nd and Sm nuclei, using a five-dimensional quadrupole collective Hamiltonian (5DCH). Deformation energy surfaces, calculated with the relativistic…

核理论 · 物理学 2018-12-05 J. Xiang , Z. P. Li , W. H. Long , T. Nikši\' c , D. Vretenar

Static and dynamic structure factors and various transport coefficients are computed for a Lennard-Jones model of a binary fluid (A,B) with a symmetrical miscibility gap, varying both temperature and relative concentration of the mixture.…

统计力学 · 物理学 2009-11-10 Subir K. Das , Jürgen Horbach , Kurt Binder

Using state-of-the-art rare-event sampling simulations, we precisely characterize the nucleation of liquid droplets from a supersaturated Lennard-Jones gas and uncover a key physical feature: critical clusters nucleate with a density that…

化学物理 · 物理学 2026-01-07 Yijian Wu , Thomas Philippe , Aymane Graini , Julien Lam

Starting from an ideal crystalline state, we numerically study a nonequilibrium dynamical order- disorder transition promoted by the application of a periodic shearing protocol at low temperatures in model systems in two and three…

软凝聚态物质 · 物理学 2021-08-10 Eric Brillaux , Francesco Turci

A continuum theory is employed to numerically study the equilibrium orientation and defect structures of a circular cylindrical particle with flat ends under a homeotropic anchoring condition in a uniform nematic medium. Different aspect…

软凝聚态物质 · 物理学 2015-01-27 S. Masoomeh Hashemi , Mohammad Reza Ejtehadi

We study the evolution of spin clusters on two dimensional slices of the $3d$ Ising model in contact with a heat bath after a sudden quench to a subcritical temperature. We analyze the evolution of some simple initial configurations, such…

统计力学 · 物理学 2015-04-01 Jeferson J. Arenzon , Leticia F. Cugliandolo , Marco Picco

This series of papers is devoted to identifying and explaining the properties of strongly correlating liquids, i.e., liquids with more than 90% correlation between their virial W and potential energy U fluctuations in the NVT ensemble.…

软凝聚态物质 · 物理学 2012-03-27 Thomas B. Schrøder , Nicoletta Gnan , Ulf R. Pedersen , Nicholas P. Bailey , Jeppe C. Dyre

We present a method to determine the equilibrium geometry of large atomistic systems with linear scaling. It is based on a separate treatment of long and short wavelength components of the forces. While the rapidly varying part is handled…

材料科学 · 物理学 2009-11-07 Stefan Goedecker , Frederic Lancon , Thierry Deutsch

The main objective of this article is to study the effect of spherical geometry on dynamic transitions and pattern formation for the Rayleigh-Benard convection. The study is mainly motivated by the importance of spherical geometry and…

数学物理 · 物理学 2015-05-30 Shouhong Wang , Ping Yang

Proper motions of collisionless pointlike objects in a spherically symmetric system, for example stars in a galaxy, can be used to test whether that system is in equilibrium, with no assumptions regarding isotropy. In particular, the fourth…

星系天体物理 · 物理学 2017-07-04 Jarah Evslin , Antonino Del Popolo

We use molecular dynamics simulations to study the evaporation of particle-laden droplets on a heated surface. The droplets are composed of a Lennard-Jones fluid containing rigid particles which are spherical sections of an atomic lattice,…

软凝聚态物质 · 物理学 2015-06-04 Weikang Chen , Joel Koplik , Ilona Kretzschmar