Phase separation in binary hard-core mixtures: An exact result
نویسندگان
چکیده
منابع مشابه
Phase separation in binary hard-core mixtures: An exact result.
We show that certain lattice models for a binary mixture of hard particle mixtures can be mapped onto a one-component lattice gas or, equivalently, onto an Ising model. The repulsive interaction between unlike particles in the mixture leads to an attractive nearest-neighbour interaction in the one-component lattice gas. In particular, we have found a lattice model of a binary hard-core mixture ...
متن کاملCrystallization and phase separation in nonadditive binary hard-sphere mixtures
We calculate for the first time the full phase diagram of an asymmetric nonadditivehard-sphere mixture. The nonadditivity strongly affects the crystallization and the fluid-fluid phase separation. The global topology of the phase diagram is controlled by an effective size ratio y(eff), while the fluid-solid coexistence scales with the depth of the effective potential well.
متن کاملEntropy-driven demixing in binary hard-core mixtures: From hard spherocylinders towards hard spheres
We present a computer simulation study of a binary mixture of hard spherocylinders with different diameters (D1,D2) and the same lengths (L15L25L). We first study a mixture of spherocylinders with lengths L 515D2 and D150, which can be regarded as a mixture of rodlike colloids and ideal needles. We find clearly an entropy-driven isotropic-isotropic (I-I) demixing transition in this mixture. In ...
متن کاملPhase separation in binary fluid mixtures with continuously ramped temperature.
We consider the demixing of a binary fluid mixture, under gravity, which is steadily driven into a two-phase region by slowly ramping the temperature. We assume, as a first approximation, that the system remains spatially isothermal, and we examine the interplay of two competing nonlinearities. One of these arises because the supersaturation is greatest far from the meniscus, creating inversion...
متن کاملNanoscale heterogeneous phase separation kinetics in binary mixtures: Multistage dynamics
In order to find a measure of the dynamical features of phase separation kinetics during spinodal decomposition of a liquid binary mixture (like water and cyclohexane , water and 2,6 lutidiene or methanol and cyclohexane), we study both the initial fast exponential-like growth (the Cahn-Hilliard regime) and the subsequent cross-over to a much slower, non-exponential long time growth (the so-cal...
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: 1992
ISSN: 0031-9007
DOI: 10.1103/physrevlett.68.3363