Coupling effects of depletion interactions in three-sphere colloidal system

doi:10.1088/1674-1056/22/5/058202

中国物理B ›› 2013, Vol. 22 ›› Issue (5): 58202-058202.doi: 10.1088/1674-1056/22/5/058202

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇下一篇

Coupling effects of depletion interactions in three-sphere colloidal system

陈泽顺^{a b}, 戴刚^a, 高海峡^{a b}, 肖长明^a

a Department of Physics, Hunan Normal University, Changsha 410081, China;
b Department of Electronic Engineering, Hunan University of Science and Engineering, Yongzhou 425100, China

收稿日期:2012-11-01 修回日期:2012-12-18 出版日期:2013-04-01 发布日期:2013-04-01
基金资助:
Project supported by the Scientific Research Fund of Hunan Provincial Education Department, China (Grant Nos. 08B028 and 10A075) and the Natural Science Foundation of Hunan Province, China (Grant No. 08jj6043).

Coupling effects of depletion interactions in three-sphere colloidal system

Chen Ze-Shun (陈泽顺)^{a b}, Dai Gang (戴刚)^a, Gao Hai-Xia (高海峡)^{a b}, Xiao Chang-Ming (肖长明)^a

a Department of Physics, Hunan Normal University, Changsha 410081, China;
b Department of Electronic Engineering, Hunan University of Science and Engineering, Yongzhou 425100, China

Received:2012-11-01 Revised:2012-12-18 Online:2013-04-01 Published:2013-04-01
Contact: Xiao Chang-Ming E-mail:cmxiao@hunnu.edu.cn
Supported by:
Project supported by the Scientific Research Fund of Hunan Provincial Education Department, China (Grant Nos. 08B028 and 10A075) and the Natural Science Foundation of Hunan Province, China (Grant No. 08jj6043).

摘要/Abstract

摘要： In a three-sphere system, the middle sphere is acted by two opposite depletion forces from the other two spheres. It is found that, in this system, the two depletion forces are coupled with each other and result in a strengthened depletion force. So the difference of the depletion forces of the three-sphere system and its corresponding two two-sphere systems is introduced to describe the coupling effect of the depletion interactions. The numerical results obtained by Monte-Carlo simulations show that this coupling effect is affected by both the concentration of small spheres and the geometrical confinement. Meanwhile, it is also found that the mechanisms of the coupling effect and the effect on the depletion force from the geometry factor are the same.

关键词: three-sphere system, coupling effect of depletion interactions

Abstract: In a three-sphere system, the middle sphere is acted by two opposite depletion forces from the other two spheres. It is found that, in this system, the two depletion forces are coupled with each other and result in a strengthened depletion force. So the difference of the depletion forces of the three-sphere system and its corresponding two two-sphere systems is introduced to describe the coupling effect of the depletion interactions. The numerical results obtained by Monte-Carlo simulations show that this coupling effect is affected by both the concentration of small spheres and the geometrical confinement. Meanwhile, it is also found that the mechanisms of the coupling effect and the effect on the depletion force from the geometry factor are the same.

Key words: three-sphere system, coupling effect of depletion interactions

中图分类号: (Colloids)

82.70.Dd

64.70.qd (Thermodynamics and statistical mechanics)

陈泽顺, 戴刚, 高海峡, 肖长明. Coupling effects of depletion interactions in three-sphere colloidal system[J]. 中国物理B, 2013, 22(5): 58202-058202.

Chen Ze-Shun (陈泽顺), Dai Gang (戴刚), Gao Hai-Xia (高海峡), Xiao Chang-Ming (肖长明). Coupling effects of depletion interactions in three-sphere colloidal system[J]. Chin. Phys. B, 2013, 22(5): 58202-058202.

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Coupling effects of depletion interactions in three-sphere colloidal system

Coupling effects of depletion interactions in three-sphere colloidal system

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