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Proceedings Paper

Wall-drag effect of dense Brownian particles close to solid-liquid interface in low-coherence dynamic light scattering
Author(s): Hui Xia; Fushi Li; Zhiquan Chen
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Paper Abstract

The wall-drag effect on diffusion of colloidal particles close to the interface wall is investigated by using a low-coherence dynamic light scattering (Low-Coherence DLS). The low-coherence DLS provides a path-lengthresolved measurement in concentrated suspensions and allows us to study the constrained diffusion of the colloidal particles. It is experimentally illustrated that the reduction of the diffusion coefficient close to the interface wall is contributed by the wall-drag effect from the low-coherence DLS measurements. The availability of low-coherence DLS for studies of interactions between particles and interfaces is discussed.

Paper Details

Date Published: 11 October 2010
PDF: 6 pages
Proc. SPIE 7656, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 76561B (11 October 2010); doi: 10.1117/12.866674
Show Author Affiliations
Hui Xia, Central South Univ. (China)
Fushi Li, Central South Univ. (China)
Zhiquan Chen, Central South Univ. (China)


Published in SPIE Proceedings Vol. 7656:
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Yudong Zhang; Jose M. Sasian; Libin Xiang; Sandy To, Editor(s)

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