Estimation of particle size distribution using photon autocorrelation function from dynamic light scattering considering unknown baseline

被引:10
|
作者
Kim, Jeongtae [1 ]
Ahn, Sohyun [1 ]
Lee, Hyemin [2 ]
Lee, Minyung [2 ]
机构
[1] Ewha Womans Univ, Dept Elect Engn, Seoul 120750, South Korea
[2] Ewha Womans Univ, Dept Chem & Nanosci, Seoul 120750, South Korea
基金
新加坡国家研究基金会;
关键词
INVERSION;
D O I
10.1364/OL.38.001757
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Conventional methods for estimating particle size distribution (PSD) based on the computed field autocorrelation function (ACF) of dynamic light scattering data are prone to baseline error and random measurement errors. To reduce the effects of the errors efficiently and automatically, we propose a penalized nonlinear nonnegative least squares (NNLS) method based on the measured photon ACF that simultaneously determines the PSD and the unknown baseline. In simulations and experiments, the proposed method was able to estimate the PSD more accurately than the existing NNLS method using the computed field ACF. (C) 2013 Optical Society of America
引用
收藏
页码:1757 / 1759
页数:3
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