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

被引：0
|
作者：
Xia, Hui [1 ]
Li, Fushi [1 ]
Chen, Zhiquan [1 ]
Li, Qinglin [1 ]
Xiao, Yuanyuan [1 ]
Lv, Kui [1 ]
机构：
[1] Cent S Univ, Sch Phys Sci & Technol, Changsha 410083, Hunan, Peoples R China
来源：
5TH INTERNATIONAL SYMPOSIUM ON ADVANCED OPTICAL MANUFACTURING AND TESTING TECHNOLOGIES: OPTICAL TEST AND MEASUREMENT TECHNOLOGY AND EQUIPMENT | 2010年 / 7656卷
关键词：
Low-coherence DLS; Interferometer; Hydrodynamic interaction; Wall-drag effect; Brownian motion; RADIATION PRESSURE; SPECTROSCOPY; DIFFUSION; MOTION;
D O I：
10.1117/12.866674
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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-length-resolved 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.
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页数：6
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