Abstract: Based on the principle of digital correlation, a digital correlator used for the measurement of dynamic light scattering was developed via the high-speed data acquisition card and the Laboratory of Virtual Instrument Engineering Workbench (LabVIEW). The experimental data were processed with this digital correlator and the autocorrelation function curves of light intensity scattered were presented. A better test result is concluded by comparing the recovered particle size and the known size. 

Key words: dynamic light scattering, particle sizing, virtual instrument