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Title: Minimizing distortions in dynamic light scattering experiments.
Author: Liu, Suo
ISNI:       0000 0001 3611 282X
Awarding Body: University of Nottingham
Current Institution: University of Nottingham
Date of Award: 2008
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Several methods are discussed and applied for minimizing distortions m dynamic light scattering (DLS). Multiple scattering, a very common phenomenon in DLS experiments, is discussed. Distortions caused by multiple scattering and its influence on correlation data are analyzed in detail. Five different methods are applied in simulations of suppression of multiple scattering in DLS experiments. The effect of foreign large particles, such as larger particles left by previous experiments, fast sinking dust in the sample suspension or agglomerations of the sample particles, are discussed and analyzed. Two 'dust' removal methods are discussed and applied on anticontamination simulations and real experimental data. Investigations are carried out considering samples flowing with velocities and also distortions coming from stray light. An area difference method is introduced in detecting a sample's velocity and stray light. From the results of simulations and real experiment data, the conclusion can be made that the methods discussed in this thesis perform well in minimizing the distortions in DLS experiment.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available