Eur. Phys. J. B 72, 451-456 (2009)
https://doi.org/10.1140/epjb/e2009-00376-y

Density functional theory approach to the freezing transition in two-dimensional colloid system

Department of Physics, Zhejiang University, Hangzhou, 310027, P.R. China

Corresponding author: ^a Luomengbo@zju.edu.cn

Received: 24 June 2009
Revised: 10 October 2009
Published online: 7 November 2009

Abstract

The freezing transition of two-dimensional colloid system is studied by the density functional theory (DFT). The liquid direct-pair correlation function (DPCF) is simulated by molecular dynamics simulations. With the DPCF, the freezing transition is determined using DFT with the Fourier components of the density ρ _K as the order parameters. The DFT results are consistent with the simulation results if ρ _Ks of the lowest three shells of reciprocal lattice vector (RLV) are used in the DFT calculation. The first order freezing transition takes place at DPCF ρ₀ C(k_a) = 0.788 on the first RLV shell. The laser induced freezing of colloid system is also studied using the DFT.