منابع مشابه
Elastic constants and the effect of strain on monovacancy concentration in fcc hard-sphere crystals
We investigate the free energy and the concentration of monovacancies in strained face-centered-cubic (fcc) hard-sphere crystals for several densities at and above melting. We use the conventional molecular dynamics method for simulations and employ a bias insertion method to extract properties of a monovacancy. We study two distinct constant-volume strains, considering a simple shear and an or...
متن کاملMonte Carlo determination of the elastic constants of the hard-sphere solid.
Monte Carlo simulation is used to study the elastic properties of the classical hard sphere solid. The elastic constants C 11 ,C 12 , and C 44 are computed for the fcc lattice structure at the melting density. Poisson's ratio is computed and is shown to be positive. Thesèexact' results are compared with those of simple models of the hard sphere solid.
متن کاملStacking Entropy of Hard Sphere Crystals
Classical hard spheres crystallize at equilibrium at high enough density. Crystals made up of stackings of 2-dimensional hexagonal close-packed layers (e.g. fcc , hcp , etc.) differ in entropy by only about 10−3kB per sphere (all configurations are degenerate in energy). To readily resolve and study these small entropy differences, we have implemented two different multicanonical Monte Carlo al...
متن کاملElastic Constants of Nematic Liquid Crystals of Uniaxial Symmetry
We study in detail the influence of molecular interactions on the Frank elastic constants of uniaxial nematic liquid crystals composed of molecules of cylindrical symmetry. A brief summary of the status of theoretical development for the elastic constants of nematics is presented. Considering a pair potential having both repulsive and attractive parts numerical calculations are reported for thr...
متن کاملStatistical Theory of Elastic Constants of Cholesteric Liquid Crystals
A statistical theory of cholesteric liquid crystals composed of short rigid biaxial molecules is presented. It is derived in the thermodynamic limit at a small density and a small twist. The uniaxial (biaxial) cholesteric phase is regarded as a distorted form of the uniaxial (biaxial) nematic phase. The chirality of the interactions and the implementation of the inversion to the rotation matrix...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review Letters
سال: 1987
ISSN: 0031-9007
DOI: 10.1103/physrevlett.59.1169