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题名: Correlated Diffusion of Colloidal Particles near a Liquid-Liquid Interface
作者: Zhang, W ;  Chen, S ;  Li, N ;  Zhang, JZ ;  Chen, W
刊名: PLOS ONE
出版日期: 2014
卷号: 9, 期号:1, 页码:e85173
关键词: TIME SELF-DIFFUSION ;  QUASI-2-DIMENSIONAL SUSPENSIONS ;  HYDRODYNAMIC INTERACTION ;  WATER-INTERFACE ;  BROWNIAN-MOTION ;  SPHERES ;  MICRORHEOLOGY ;  MEMBRANE ;  SURFACE
学科分类: Physics
DOI: 10.1371/journal.pone.0085173
通讯作者: Zhang, W (reprint author), Fudan Univ, Dept Phys, State Key Lab Surface Phys, Shanghai 200433, Peoples R China.
部门归属: [Zhang, Wei; Chen, Song; Li, Na; Zhang, Jia Zheng; Chen, Wei] Fudan Univ, Dept Phys, State Key Lab Surface Phys, Shanghai 200433, Peoples R China; [Zhang, Wei] Northwestern Polytech Univ, Dept Appl Phys, Xian 710072, Peoples R China; [Zhang, Wei] Jinan Univ, Dept Phys, Guangzhou, Guangdong, Peoples R China; [Chen, Wei] Chinese Acad Sci, Kavli Inst Theoret Phys China, Beijing, Peoples R China
英文摘要: Optical microscopy and multi-particle tracking are used to investigate the cross-correlated diffusion of quasi two-dimensional colloidal particles near an oil-water interface. The behaviors of the correlated diffusion along longitudinal and transverse direction are asymmetric. It is shown that the characteristic length for longitudinal and transverse correlated diffusion are particle diameter d and the distance z from particle center to the interface, respectively, for large particle separation r. The longitudinal and transverse correlated diffusion coefficient D-parallel to(r) and D-perpendicular to(r) are independent of the colloidal area fraction n when n<0.3, which indicates that the hydrodynamic interactions(HIs) among the particles are dominated by HIs through the surrounding fluid for small n. For high area fraction n>0.4, the power law exponent for the spatial decay of D-perpendicular to(r) begins to decrease, which suggests the HIs are more contributed from the 2D particle monolayer self for large n.
资助者: National Science Fund for Talent Trainning in Basic Science [J1103204]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000330240500036
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15507
Appears in Collections:理论物理所2014年知识产出 _期刊论文

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Recommended Citation:
Zhang, W,Chen, S,Li, N,et al. Correlated Diffusion of Colloidal Particles near a Liquid-Liquid Interface[J]. PLOS ONE,2014,9(1):e85173.
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