中国物理B ›› 2013, Vol. 22 ›› Issue (12): 128701-128701.doi: 10.1088/1674-1056/22/12/128701

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

Symmetrical adhesion of two cylindrical colloids to a tubular membrane

牛余全, 魏巍, 郑斌, 张彩霞, 孟庆田   

  1. College of Physics and Electronics, Shandong Normal University, Jinan 250014, China
  • 收稿日期:2013-04-18 修回日期:2013-07-09 出版日期:2013-10-25 发布日期:2013-10-25
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 11074151) and the National Key Basic Research and Development Program of China (Grant No. 2011CB808100).

Symmetrical adhesion of two cylindrical colloids to a tubular membrane

Niu Yu-Quan (牛余全), Wei Wei (魏巍), Zheng Bin (郑斌), Zhang Cai-Xia (张彩霞), Meng Qing-Tian (孟庆田)   

  1. College of Physics and Electronics, Shandong Normal University, Jinan 250014, China
  • Received:2013-04-18 Revised:2013-07-09 Online:2013-10-25 Published:2013-10-25
  • Contact: Meng Qing-Tian E-mail:qtmeng@sdnu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 11074151) and the National Key Basic Research and Development Program of China (Grant No. 2011CB808100).

摘要: With the full treatment of the Helfrich model we theoretically study the symmetrical adhesion of two cylindrical colloids to a tubular membrane. The adhesion of the rigid cylinders with different radius from the membrane tube surface can produce both shallow wrapping with relatively small wrapping angle and deep wrapping with big wrapping angle. These significant structural behaviors can be obtained by analyzing the system energy. A second order adhesion transition from the desorbed to weakly adhered states is found, and a first order phase transition where the cylindrical colloids undergo an abrupt transition from weakly adhered to strongly adhered states can be obtained as well.

关键词: Helfrich model, phase transition, free energy, tubular membrane

Abstract: With the full treatment of the Helfrich model we theoretically study the symmetrical adhesion of two cylindrical colloids to a tubular membrane. The adhesion of the rigid cylinders with different radius from the membrane tube surface can produce both shallow wrapping with relatively small wrapping angle and deep wrapping with big wrapping angle. These significant structural behaviors can be obtained by analyzing the system energy. A second order adhesion transition from the desorbed to weakly adhered states is found, and a first order phase transition where the cylindrical colloids undergo an abrupt transition from weakly adhered to strongly adhered states can be obtained as well.

Key words: Helfrich model, phase transition, free energy, tubular membrane

中图分类号:  (Analytical theories)

  • 87.15.ad
87.15.kt (Protein-membrane interactions) 68.35.Np (Adhesion)