中国物理B ›› 2006, Vol. 15 ›› Issue (7): 1638-1644.doi: 10.1088/1009-1963/15/7/043

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Effects of unsymmetrical geometric confinements on depletion interactions in colloidal suspensions

黄立新1, 肖长明1, 郭纪源2   

  1. (1)Department of Physics, Hunan Normal University, Changsha 410081, China; (2)Department of Physics, Hunan Normal University, Changsha 410081, China；College of Mathematics and Physics, Jiangsu University of Science and Technology, Zhenjiang 212003, China
  • 收稿日期:2005-07-22 修回日期:2006-04-03 出版日期:2006-07-20 发布日期:2006-07-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10375024) and the Science Foundation of Hunan Educational Committee, China

Effects of unsymmetrical geometric confinements on depletion interactions in colloidal suspensions

Guo Ji-Yuan (郭纪源)ab, Huang Li-Xin (黄立新)a, Xiao Chang-Ming (肖长明)a   

  1. a Department of Physics, Hunan Normal University, Changsha 410081, China; b College of Mathematics and Physics, Jiangsu University of Science and Technology, Zhenjiang 212003, China
  • Received:2005-07-22 Revised:2006-04-03 Online:2006-07-20 Published:2006-07-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10375024) and the Science Foundation of Hunan Educational Committee, China

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摘要： The depletion interactions between two large-spheres immersed in a fluid of small spheres under unsymmetrical geometrical confinement are studied through the acceptance ratio method. The numerical results show that no matter whether the volume fraction is large or small, both the depletion potential and depletion force are affected by the presence of the two plates; the closer the two large spheres are to the plate, the larger the effects of the unsymmetrical confinements.

关键词: depletion interactions, colloidal, acceptance ratio method

Abstract: The depletion interactions between two large-spheres immersed in a fluid of small spheres under unsymmetrical geometrical confinement are studied through the acceptance ratio method. The numerical results show that no matter whether the volume fraction is large or small, both the depletion potential and depletion force are affected by the presence of the two plates; the closer the two large spheres are to the plate, the larger the effects of the unsymmetrical confinements.

Key words: depletion interactions, colloidal, acceptance ratio method

中图分类号:  (Colloids)

  • 82.70.Dd
47.57.E- (Suspensions) 47.57.J- (Colloidal systems) 82.70.Kj (Emulsions and suspensions)