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Growth and structures of crystals in the model of Al obtained in results of isothermal annealing after quick cooling to certain temperatures are studied by the method of molecular dynamics applying the known potential of EAM type. The…

材料科学 · 物理学 2014-03-27 A. S. Prokhoda , A. M. Ovrutsky

Glasses offer a broad range of tunable thermophysical properties that are linked to their compositions. However, it is challenging to establish a universal composition-property relation of glasses due to their enormous composition and…

软凝聚态物质 · 物理学 2023-08-23 Kumar Ayush , Pooja Sahu , Sk Musharaf Ali , Tarak K Patra

When strained beyond the linear regime, soft colloidal glasses yield to steady-state plastic flow in a way that is similar to the deformation of conventional amorphous solids. Due to the much larger size of the colloidal particles with…

软凝聚态物质 · 物理学 2017-04-12 Antina Ghosh , Zoe Budrikis , Vijayakumar Chikkadi , Alessandro Sellerio , Stefano Zapperi , Peter Schall

We develop a method for calculating the equilibrium properties of the liquid-solid phase transition in a classical, ideal, multi-component plasma. Our method is a semi-analytic calculation that relies on extending the accurate fitting…

太阳与恒星天体物理 · 物理学 2012-07-31 Zach Medin , Andrew Cumming

Mixed atomistic and continuum methods offer the possibility of carrying out simulations of material properties at both larger length scales and longer times than direct atomistic calculations. The quasi-continuum method links atomistic and…

材料科学 · 物理学 2007-05-23 V. B. Shenoy , R. Miller , E. B. Tadmor , D. Rodney , R. Phillips , M. Ortiz

Employing Monte-Carlo simulation techniques we investigate the statistical properties of equally charged particles confined in a one-dimensional box trap and detect a crossover from a crystalline to a cluster phase with increasing…

统计力学 · 物理学 2013-04-23 A. V. Zampetaki , F. K. Diakonos , P. Schmelcher

In this work we present a formalism for the calculation of the local elastic constants in inhomogeneous systems based on a method of planes. Unlike previous work, this formalism does not require the partitioning of the system into a set of…

软凝聚态物质 · 物理学 2009-11-07 K. Van Workum , J. J. de Pablo

We study numerically a monodisperse model of interacting classical particles predicted to exhibit a static liquid-glass transition. Using a dynamical Monte Carlo method we show that the model does not freeze into a glassy phase at low…

无序系统与神经网络 · 物理学 2011-11-10 Charlotte Gils , Helmut G. Katzgraber , Matthias Troyer

Numerical simulation is employed to study dynamical heterogeneities in model harmonic glasses whose atoms interact via three variants of the Lennard-Jones potential (monoatomic full Lennard-Jones, soft spheres, binary mixture).…

无序系统与神经网络 · 物理学 2007-05-23 G. Viliani , E. Duval , L. Angelani

Crystallization of supersaturated liquids usually starts by heterogeneous nucleation. Mounting evidence shows that even homogeneous nucleation in simple liquids takes place in two steps; first a dense amorphous precursor forms, and the…

Fracture is the ultimate source of failure of amorphous carbon (a-C) films, however it is challenging to measure fracture properties of a-C from nano-indentation tests and results of reported experiments are not consistent. Here, we use…

材料科学 · 物理学 2021-02-17 S. Mostafa Khosrownejad , James R. Kermode , Lars Pastewka

Crystallization from an amorphous atomic structure is usually seen as a spontaneous process in pursuit of a lower energy state, but for alloy systems it is often hard to elucidate because of the intrinsic structural and compositional…

材料科学 · 物理学 2020-04-10 Y. Huang , L. Xie , D. S. He , J. Q. He

The semiclassical dynamics of atoms are theoretically studied, when the atoms are confined inside a standing-wave high-finesse resonator. The atoms are cooled by scattering processes in which the photons of a transverse laser are coherently…

量子物理 · 物理学 2014-02-20 Stefan Schütz , Hessam Habibian , Giovanna Morigi

In this paper the systematic method of dealing with the arbitrary decorations of quasicrystals is presented. The method is founded on the average unit cell formalism and operates in the physical space only, where each decorating atom…

其他凝聚态物理 · 物理学 2009-11-11 Pawel Buczek , Janusz Wolny

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

The dynamics of glass formation in monatomic and binary liquids are studied numerically using a microscopic field theory for the evolution of the time-averaged atomic number density. A stochastic framework combining phase field crystal free…

材料科学 · 物理学 2015-05-27 Joel Berry , Martin Grant

We report a metadynamics simulation study of crystallization in a deep undercooled metallic glass-forming liquid by developing appropriate collective variables. Through a combined analysis of free energy surface (FES) and atomic-level…

无序系统与神经网络 · 物理学 2020-02-25 Wen-Xiong Song , Yong Yang , Weihua Wang , Pengfei Guan

We propose and demonstrate a simple method to accurately monitor and program arbitrary states of partial crystallization in phase-change materials (PCMs). The method relies both on the optical absorption in PCMs as well as on the physics of…

We report results of molecular dynamics simulations of a binary Lennard-Jones system at zero pressure in the undercooled liquid and glassy states. We first follow the evolution of diffusivity and dynamic heterogeneity with temperature and…

无序系统与神经网络 · 物理学 2007-05-23 H. R. Schober

We report on the results of a molecular dynamics simulation study of binodal glassy systems, formed in the process of isochoric rapid quenching from a high-temperature fluid phase. The transition to vitreous state occurs due to concurrent…

软凝聚态物质 · 物理学 2018-02-21 Maxim A. Makeev , Nikolai V. Priezjev