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Updated: Jun 6, 2026

Application of Voltage in Dynamic Light Scattering Particle Size Analysis
Published on: January 24, 2020
Use of dynamic light scattering to determine second virial coefficient in a semidilute concentration regime
Sandeep Yadav1, Thomas M Scherer, Steven J Shire
1Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT 06269, USA.
Abstract:
The present work discusses an alternative procedure to obtain static light scattering (SLS) parameters in a dilute and semidilute concentration regime from a dynamic light scattering (DLS) instrument that uses an avalanche photodiode (APD) for recording the scattered intensity signal. An APD enables one to perform both SLS and DLS measurements by photon counting and photon correlation, respectively. However, due to the associated recovery time, the APDs are susceptible to saturation (above 1000 kcps), which may limit the measurements in systems that scatter too much light. We propose an alternative way of obtaining the SLS parameters with instruments that use APD for recording signal intensities.
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