中国物理B ›› 2025, Vol. 34 ›› Issue (1): 16401-016401.doi: 10.1088/1674-1056/ad9300

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Interparticle-friction-induced anomalous colloid structure

Fuzhou Liu(刘福洲)1,2,†, Yu Ding(丁宇)1,2, Longfei Li(黎龙飞)1,2, Ke Cheng(程可)1,2, Fangfu Ye(叶方富)1,2,3,4,5,‡, and Mingcheng Yang(杨明成)1,2,5,†   

  1. 1 Beijing National Laboratory for Condensed Matter Physics and CAS Key Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences (CAS), Beijing 100190, China;
    2 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;
    3 Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China;
    4 Oujiang Laboratory (Zhejiang Laboratory for Regenerative Medicine, Vision and Brain Health), Wenzhou 325000, China;
    5 Songshan Lake Materials Laboratory, Dongguan 523808, China
  • 收稿日期:2024-10-11 修回日期:2024-11-04 接受日期:2024-11-15 发布日期:2024-12-31
  • 通讯作者: Fuzhou Liu, Fangfu Ye, Mingcheng Yang E-mail:liufuzhou16@mails.ucas.edu.cn;fye@iphy.ac.cn;mcyang@iphy.ac.cn
  • 基金资助:
    We acknowledge the support of the National Natural Science Foundation of China (Grant Nos. 12274448, 12325405, and 12174390) and the National Key R&D Program of China (Grant No. 2022YFF0503504).

Interparticle-friction-induced anomalous colloid structure

Fuzhou Liu(刘福洲)1,2,†, Yu Ding(丁宇)1,2, Longfei Li(黎龙飞)1,2, Ke Cheng(程可)1,2, Fangfu Ye(叶方富)1,2,3,4,5,‡, and Mingcheng Yang(杨明成)1,2,5,†   

  1. 1 Beijing National Laboratory for Condensed Matter Physics and CAS Key Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences (CAS), Beijing 100190, China;
    2 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;
    3 Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China;
    4 Oujiang Laboratory (Zhejiang Laboratory for Regenerative Medicine, Vision and Brain Health), Wenzhou 325000, China;
    5 Songshan Lake Materials Laboratory, Dongguan 523808, China
  • Received:2024-10-11 Revised:2024-11-04 Accepted:2024-11-15 Published:2024-12-31
  • Contact: Fuzhou Liu, Fangfu Ye, Mingcheng Yang E-mail:liufuzhou16@mails.ucas.edu.cn;fye@iphy.ac.cn;mcyang@iphy.ac.cn
  • Supported by:
    We acknowledge the support of the National Natural Science Foundation of China (Grant Nos. 12274448, 12325405, and 12174390) and the National Key R&D Program of China (Grant No. 2022YFF0503504).

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摘要： Interparticle frictional interactions are ubiquitous in colloidal systems, exerting a profound influence on their structural and physical attributes. In this study, we employed Brownian dynamics simulations to explore the non-equilibrium dynamics in colloidal systems, focusing particularly on the role of tangential friction and its influence on the macroscopic physical properties of colloids. We found that the disruption of instantaneous time-reversal symmetry by tangential frictional interactions can trigger the self-assembly of colloidal systems into intricate network configurations, and these novel structures exhibit unique depletion force and rheological properties that set them apart from traditional colloidal gel systems. These findings not only help deepen our comprehension of the self-assembly phenomena in non-equilibrium colloidal systems but also offer fresh insights for the development of colloidal materials with tailored characteristics.

关键词: colloids, networks, self-assembly, Brownian dynamics

Abstract: Interparticle frictional interactions are ubiquitous in colloidal systems, exerting a profound influence on their structural and physical attributes. In this study, we employed Brownian dynamics simulations to explore the non-equilibrium dynamics in colloidal systems, focusing particularly on the role of tangential friction and its influence on the macroscopic physical properties of colloids. We found that the disruption of instantaneous time-reversal symmetry by tangential frictional interactions can trigger the self-assembly of colloidal systems into intricate network configurations, and these novel structures exhibit unique depletion force and rheological properties that set them apart from traditional colloidal gel systems. These findings not only help deepen our comprehension of the self-assembly phenomena in non-equilibrium colloidal systems but also offer fresh insights for the development of colloidal materials with tailored characteristics.

Key words: colloids, networks, self-assembly, Brownian dynamics

中图分类号:  (Colloids)

  • 64.70.pv
64.60.aq (Networks) 64.75.Yz (Self-assembly) 83.10.Mj (Molecular dynamics, Brownian dynamics)