Citation: KONG Wei-Yuan, WANG Hai-Jun, GU Fang. Depletion Potential between Two Colloid Particles Immersed in a Hard-Core Yukawa Fluid[J]. Acta Physico-Chimica Sinica, ;2011, 27(10): 2400-2405. doi: 10.3866/PKU.WHXB20111003 shu

Depletion Potential between Two Colloid Particles Immersed in a Hard-Core Yukawa Fluid

KONG Wei-Yuan ¹ ,
WANG Hai-Jun ^1,2,3, ,
GU Fang ¹

1.
1. College of Chemistry and Environmental Science, Hebei University, Baoding 071002, Hebei Province, P. R. China;
2. Key Laboratory of Medical Chemistry and Molecular Diagnosis, Ministry of Education, Baoding 071002, Hebei Province, P. R. China;
3. International Center for Materials Physics, Chinese Academy of Sciences, Shenyang 110016, P. R. China

Received Date: 5 April 2011
Available Online: 15 August 2011
Fund Project: 国家自然科学基金(20873035)资助项目 (20873035)

The depletion potential between two colloid particles immersed in a hard-core Yukawa fluid was investigated by density functional theory for the depletion potential proposed by Roth, Evans, and Dietrich. An attempt was made to study the effects of several factors concerning the colloid particles and the solvent molecules on the depletion potential, which are the size ratio of the colloid particle to the solvent, the interaction between solvent molecules, the packing fraction of the solvent, and the interaction between the colloid particle and the solvent. By means of the depletion potential presented under various conditions, it is shown that the effects of these factors on the depletion potential are significant and this can provide some useful clues on regulating the interaction between colloid particles in related experiments.
- Hard-core Yukawa fluid,
- Depletion potential,
- Colloid particle,
- Density functional theory
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