DYNAMIC LIGHT SCATTERING FOR PARTICLE SIZE DISTRIBUTION MEASUREMENT

摘要

Multispectral or single dynamic light scattering (DLS) may be performed to measure particle size distributions within a multi- or single particle species mixture quickly and accurately. For example, light of a first and second wavelength may be directed simultaneously or sequentially into a mixture comprising a particle species, where the first wavelength may be appreciably absorbed by the particle species and the second wavelength may be appreciably scattered by an entirety of the mixture. A first and second DLS signal detected in response to a scattering of the light of the first and second wavelength by the mixture, respectively, may be used to determine a first and second scattered light intensity of the mixture in order to yield a first and second particle size distribution, respectively. The particle size distribution of the particle species may then be determined based on a difference between the first and second particle size distributions.