Relationship between characteristic lengths and effective Saffman length in colloidal monolayers near a water-oil interface

doi:10.1088/1674-1056/28/6/064703

中国物理B ›› 2019, Vol. 28 ›› Issue (6): 64703-064703.doi: 10.1088/1674-1056/28/6/064703

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

Relationship between characteristic lengths and effective Saffman length in colloidal monolayers near a water-oil interface

Na Li(李娜), Wei Zhang(张伟), Wei Chen(陈唯)

1 State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200438, China;
2 School of Physical Science and Technology, China University of Mining and Technology, Xuzhou 221116, China

收稿日期:2019-03-29 修回日期:2019-05-05 出版日期:2019-06-05 发布日期:2019-06-05
通讯作者: Wei Chen E-mail:phchenwei@fudan.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11474054, 11774417, and 11604381) and the Natural Science Foundation of Jiangsu Province, China (Grant No. BK20160238).

Relationship between characteristic lengths and effective Saffman length in colloidal monolayers near a water-oil interface

Na Li(李娜)¹, Wei Zhang(张伟)², Wei Chen(陈唯)¹

1 State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200438, China;
2 School of Physical Science and Technology, China University of Mining and Technology, Xuzhou 221116, China

Received:2019-03-29 Revised:2019-05-05 Online:2019-06-05 Published:2019-06-05
Contact: Wei Chen E-mail:phchenwei@fudan.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11474054, 11774417, and 11604381) and the Natural Science Foundation of Jiangsu Province, China (Grant No. BK20160238).

摘要/Abstract

摘要：

The hydrodynamic interactions (HIs) in colloidal monolayers are strongly influenced by the boundary conditions and can be directly described in terms of the cross-correlated diffusion of the colloid particles. In this work, we experimentally measured the cross-correlated diffusion in colloidal monolayers near a water-oil interface. The characteristic lengths of the system were obtained by introducing an effective Saffman length. The characteristic lengths of a particle monolayer near a water-oil interface were found to be anisotropic in the longitudinal and transverse directions. From these characteristic lengths, the master curves of cross-correlated diffusion are obtained, which universally describe the HIs near a liquid-liquid interface.

关键词: colloidal monolayer, cross-correlated diffusion, hydrodynamic interactions, characteristic length

Abstract:

Key words: colloidal monolayer, cross-correlated diffusion, hydrodynamic interactions, characteristic length

中图分类号: (Colloidal systems)

47.57.J-

47.85.Dh (Hydrodynamics, hydraulics, hydrostatics) 05.40.Jc (Brownian motion) 45.50.-j (Dynamics and kinematics of a particle and a system of particles)

李娜, 张伟, 陈唯. Relationship between characteristic lengths and effective Saffman length in colloidal monolayers near a water-oil interface[J]. 中国物理B, 2019, 28(6): 64703-064703.

Na Li(李娜), Wei Zhang(张伟), Wei Chen(陈唯). Relationship between characteristic lengths and effective Saffman length in colloidal monolayers near a water-oil interface[J]. Chin. Phys. B, 2019, 28(6): 64703-064703.

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Relationship between characteristic lengths and effective Saffman length in colloidal monolayers near a water-oil interface

Relationship between characteristic lengths and effective Saffman length in colloidal monolayers near a water-oil interface

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