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Hooshmand Ziafi S H, Dashtdar M, Shokri Moghaddam M. Analytical and experimental study of Double-Exponential (DE) method in particle sizing of colloidal bimodal samples . ICOP & ICPET _ INPC _ ICOFS 2017; 23 :701-704
URL: http://opsi.ir/article-1-1327-en.html
URL: http://opsi.ir/article-1-1327-en.html
Abstract: (3366 Views)
Dynamic light scattering (DLS) is a method for determining the size of particles in colloidal samples. One of the methods for analysis of DLS data from bimodal samples is the double-exponential method (DE). This method assumes a model field-autocorrelation function given by the sum of two exponentials. In this article we have presented that despite some researches, fitting the autocorrelation function into the sum of two exponentials, does not always show the existence of two different particle-sizes in sample, but it is true only under some conditions. For accuracy of our analysis, we also used the experimental data of DLS setup
Keywords: Dynamic light scattering (DLS), bimodal sample, field autocorrelation function, double-exponential method.
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