In the Dynamic Light Scattering (DLS) method, the exponential decrease of the autocorrelation function means the Brownian motion of particles in the dispersant. If it does not decrease exponentially (if it follows polynomial, zigzag, or linear manner), then what does it indicate regarding the particle motion?
Hi Kaiser Ahmed Rocky
There are a number of factors and effects that can cause an irregular autocorrelation function to be measured.
In general a non exponential decay is caused by either non brownian motion being detected, or the average scattering intensity changing during the measurement. There are several potential causes for either of these.
The following webinar discusses how to interpret DLS data and may be of interest.
https://www.malvernpanalytical.com/en/learn/events-and-training/live-events/webinar-live/W192201WhenisaParticle
Kaiser Ahmed Rocky , as a general answer there could be three potential scenarios:
If you have any specific data to share, it might be possible to give a better explanation.
Thank you for your answers. I got the point from your answers @ Alexander Malm, @ Ulf Nobbmann
- Badges
- Science topic
- Similar topics
- Biological Science
- Biochemistry
- Enzymology
- Enzymes