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

DOI number:10.1088/1674-1056/28/6/064703
Journal:Chinese Physics B
Abstract: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.
Indexed by:Journal paper
Document Code:064703
Volume:28
Issue:6
Page Number:064703
Translation or Not:no
Date of Publication:2019-06-27
Included Journals:SCI
Links to published journals:https://iopscience.iop.org/article/10.1088/1674-1056/28/6/064703