Concentration measurement of particles by number fluctuation in dynamic light backscattering

被引：8
作者：
Yang, Hui [1 ,2 ,3 ]
Yang, Hai-ma [1 ]
Kong, Ping [4 ]
Zhu, Yi-ming [1 ,3 ]
Dai, Shu-guang [1 ]
Zheng, Gang [1 ,3 ]
机构：
[1] Univ Shanghai Sci & Technol, Sch Opt Elect & Comp Engn, Shanghai 200093, Peoples R China
[2] Shanghai Key Lab Comp Software Evaluating & Testi, Shanghai 200093, Peoples R China
[3] Univ Shanghai Sci & Technol, Shanghai Key Lab Modern Opt Syst, Shanghai 200093, Peoples R China
[4] Shanghai Med Instrumentat Coll, Fdn Dept, Shanghai 200093, Peoples R China
来源：
POWDER TECHNOLOGY | 2013年 / 246卷
基金：
中国国家自然科学基金;
关键词：
Dynamic light scattering (DLS); Back-scattering; Measurement of concentration; Autocorrelation function; FLUORESCENCE CORRELATION SPECTROSCOPY; PHOTON-CORRELATION SPECTROSCOPY; SCATTERING; SIZE; VELOCITY;
D O I：
10.1016/j.powtec.2013.06.006
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The noninvasive optical technique of dynamic light scattering (DLS) is routinely applied to the size measurement of particles undergoing Brownian motion. Theoretically, in addition to the mean particle size the concentration of the particles can be measured from an extra decay in the intensity autocorrelation function in the case of very low concentration. To the authors' knowledge, however, the experimental results of the concentration measurements are always unsatisfactory due to the practical difficulty of accurate definition of the scattering volume. In this paper, we propose a concentration measuring method using particle number fluctuation with Dynamic Light Back-Scattering (DLBS) technique. The DLBS technique can define the scattering volume very well. It is therefore promising for the particle concentration measurement. (c) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：499 / 503
页数：5
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