Numerical simulations and experimental results for unimodal and multimodal distributions are presented to demonstrate both the validity of the WIRNNT-PT algorithm and the angular dependence of MDLS and show that the proposed algorithm with a six-angle analysis in the 30-130° range can be satisfactorily applied to retrieve PSDs from MDLS measurements. In this paper, a novel successive updating of the angular weighting (AWSU) method is proposed. However, determining the weighting coefficient is affected by the noise in the measured MDLS data. It is used for determining both the absolute molar mass and the average size of molecules in solution, by detecting how they scatter light. The angular weighting coefficient is key to accurate particle size distribution (PSD) measurement using multiangle dynamic light scattering (MDLS). The dependence of the results on the number and range of measurement angles was analyzed in depth to identify the optimal scattering angle combination. Multiangle light scattering describes a technique for measuring the light scattered by a sample into a plurality of angles. The principle is based on the analysis of the temporal fluctuations of light scattered by the particles at a given scattering angle. In addition, the angular dependence of the MDLS for estimating the PSDs of polymeric latexes is thoroughly analyzed. Dynamic Light Scattering (DLS) is a widely used technique for measuring the size distributions of nano- and micro-particles dispersed in a liquid. Multiangle dynamic light scattering (MDLS) collects DLS data at multiple. This algorithm combines a wavelet multiscale strategy with an appropriate inversion method and could self-adaptively optimize several noteworthy issues containing the choices of the weighting coefficients, the inversion range and the optimal inversion method from two regularization algorithms for estimating the PSD from MDLS measurements. Dynamic light scattering (DLS) is a popular method of particle size measurement. In this paper, we propose a self-adapting regularization method called the wavelet iterative recursion nonnegative Tikhonov-Phillips-Twomey (WIRNNT-PT) algorithm. However, determining the inversion range, angular weighting coefficients, and scattering angle combination is difficult but fundamental to the reconstruction for both unimodal and multimodal distributions. More elaborated multi-angle instruments can.
Simple DLS instruments that measure at a fixed angle can determine the mean particle size in a limited size range. It is used for determining both the absolute molar mass and the average size of molecules in solution, by detecting how they scatter light. The hydrodynamic radius (Stokes radius) as measured by sedimentation velocity or dynamic light scattering is that of an equivalent sphere and contains. The basic principle is simple: The sample is illuminated by a laser beam and the fluctuations of the scattered light are detected at a known scattering angle by a fast photon detector. The multiangle dynamic light scattering (MDLS) technique can better estimate particle size distributions (PSDs) than single-angle dynamic light scattering. Multiangle light scattering (MALS) describes a technique for measuring the light scattered by a sample into a plurality of angles.