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
Revised: 10 October 2009
Published online: 7 November 2009
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(ka) = 0.788 on the first RLV shell. The laser induced freezing of colloid system is also studied using the DFT.
PACS: 64.70.dm – General theory of the solid-liquid transition / 05.70.Fh – Phase transitions: general studies / 61.20.Ja – Computer simulation of liquid structure
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2009