Gas-liquid phase coexistence and finite-size effects in a two-dimensional Lennard-Jones system

The gas-liquid phase coexistence in a two-dimensional Lennard-Jones system is investigated using Maxwell construction method together with molecular dynamics simulations. The results of phase coexistence in different truncations of the potential are compared with data obtained from the literature, a...

Full description

Saved in:
Bibliographic Details
Published in:Chinese science bulletin 2011-09, Vol.56 (26), p.2773-2779
Main Authors: Ouyang, WenZe, Xu, ShengHua, Sun, ZhiWei
Format: Article
Language:English
Subjects:
Chemistry/Food Science
Earth Sciences
Engineering
gases
Humanities and Social Sciences
Life Sciences
liquids
molecular dynamics
multidisciplinary
Physics
Science
Science (multidisciplinary)
simulation models
temperature
临界温度
二维
共存
分子动力学模拟
有限尺寸效应
气液相
系统
规模效应
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The gas-liquid phase coexistence in a two-dimensional Lennard-Jones system is investigated using Maxwell construction method together with molecular dynamics simulations. The results of phase coexistence in different truncations of the potential are compared with data obtained from the literature, and the corresponding critical properties calculated. The crossover from Ising-like to mean field behavior is observed and confirmed as the temperature approaches the critical point from below. Performing simulations on systems with different sizes, we find that a finite size effect is more significant than those shown in most of the previous results, and a lower critical temperature is obtained when the full extent of this finite size effect is considered.
ISSN:1001-6538
1861-9541
DOI:10.1007/s11434-011-4611-z