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ZB 10 - Soft Condensed Matter (R. Holyst)

We are different, but we all do great Science; and we have a lot of fun doing it!
We are different, but we all do great Science; and we have a lot of fun doing it!
We are different, but we all do great Science; and we have a lot of fun doing it!
We are different, but we all do great Science; and we have a lot of fun doing it!
We are different, but we all do great Science; and we have a lot of fun doing it!
We are different, but we all do great Science; and we have a lot of fun doing it!
We are different, but we all do great Science; and we have a lot of fun doing it!
We are different, but we all do great Science; and we have a lot of fun doing it!

Publication

The effect of depletion layer on diffusion of nanoparticles in solutions of flexible and polydisperse polymers

Author(s): Ochab-Marcinek, Anna and Wieczorek, Stefan A. and Ziebacz, Natalia and Holyst, Robert
Title: The effect of depletion layer on diffusion of nanoparticles in solutions of flexible and polydisperse polymers
Abstract: We introduce a model of diffusion of nanoparticles in solutions of polydisperse polymers. The model takes into account the effect depletion layer with soft boundaries. The presence of depletion layer to nonlinear dependence of the mean square displacement (MSD) on Our model may be an alternative choice for the study of those systems where the crossover between subdiffusion and normal is observed. Its advantage is mathematical simplicity: it easy identification of the crossover times and distances, which here associated with the depletion layer thickness. The soft of the depletion layer, generated by the flexible and polymers, are here approximated by two shells enclosed one another, which may be interpreted as approximations of polymer profiles around the probe. We show a very good agreement of the with dynamic light scattering (DLS) measurements of diffusion of nanoparticles in solutions of polyethylene glycol (PEG).
Pages: 11173-11179
Journal: SOFT MATTER
Volume: 8
ID: ISI:000310829500020
Year: 2012
DOI: 10.1039/c2sm25925g