Wall-drag effect of dense Brownian particles close to solid-liquid interface in low-coherence dynamic light scattering

Hui Xia; Fushi Li; Zhiquan Chen

doi:10.1117/12.866674

11 October 2010 Wall-drag effect of dense Brownian particles close to solid-liquid interface in low-coherence dynamic light scattering

Hui Xia, Fushi Li, Zhiquan Chen

Author Affiliations +

Proceedings Volume 7656, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment; 76561B (2010) https://doi.org/10.1117/12.866674
Event: 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies, 2010, Dalian, China

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.

Citation Download Citation

Hui Xia, Fushi Li, and Zhiquan Chen "Wall-drag effect of dense Brownian particles close to solid-liquid interface in low-coherence dynamic light scattering", Proc. SPIE 7656, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 76561B (11 October 2010); https://doi.org/10.1117/12.866674

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