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Micro-rheology near fluid interfaces

Wang, Genmiao; Prabhakar, R; Gao, Yongxiang; Sevick, Edith M

Description

Using optical trapping, we have measured anisotropic and distance-dependent mobility of a colloidal particle near high surface tension fluid-fluid interfaces. These experimental results show that the parallel mobility is enhanced near a high surface tension liquid-gas surface, which is consistent with hydrodynamic predictions for a surface that does not support a stress, and that the parallel mobility is suppressed near a high surface tension liquid-liquid surface, consistent with a no-slip...[Show more]

CollectionsANU Research Publications
Date published: 2011
Type: Journal article
URI: http://hdl.handle.net/1885/68459
Source: Journal of Optics
DOI: 10.1088/2040-8978/13/4/044009

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