Simultaneous regularization method for the determination of radius distributions from experimental multiangle correlation functions - art. no. 041404

Dynamic light scattering experiments have become a powerful tool in order t o investigate the dynamical properties of complex fluids. In many applicati ons in both soft matter research and industry so-called "real world" system s are subject of great interest. Here, the dilution of the investigated sys tem often cannot be changed without getting measurement artifacts, so that one often has to deal with highly concentrated and turbid media. The invest igation of such systems requires techniques that suppress the influence of multiple scattering, e.g., cross correlation techniques. However, measureme nts at turbid as well as highly diluted media lead to data with low signal- to-noise ratio, which complicates data analysis and leads to unreliable res ults. In this article a multiangle regularization method is discussed, whic h copes with the difficulties arising from such samples and enhances enormo usly the quality of the estimated solution. In order to demonstrate the eff iciency of this multiangle regularization method we applied it to cross cor relation functions measured at highly turbid samples.