2004/07/01 by Yong Sun, Sun, Yong
Medicine · Physics and Astronomy · #Biological Physics (physics.bio-ph) #Chemical Physics (physics.chem-ph) #FOS: Physical sciences #Optical Imaging and Spectroscopy Techniques #physics.bio-ph #physics.chem-ph
paper · pdf · doi:10.48550/arxiv.physics/0407001
openalex publication_date 2004/07/01 · arxiv created 2004/12/08 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Detailed investigation of static light scattering (SLS) has been attempted in this work using dilute water dispersions of homogenous spherical particles, poly(N-isopropylacrylamide) microgels and simulated data. When Rayleigh-Gan-Debye approximation is valid, for large particles, the simple size information, the static radius Rs and distribution G(Rs) , can be accurately obtained from SLS. For small particles, the root mean-square radius of gyration < Rg2>Zimm1/2 and the molar mass of particles measured using the Zimm plot are discussed. The results show that the molar mass measured using the Zimm plot over the average molar mass of particles is a function of the size distribution. With the assistance of simulated data, the effects of the reflected light and noises have been investigated in detail. Measuring the static radius from the SLS data provides one method to avoid the stringent requirements for the sample quantity and the instrument capability at small scattering angles.