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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

Crossover regime for the diffusion of nanoparticles in polyethylene glycol solutions: influence of the depletion layer

Author(s): Ziebacz, Natalia and Wieczorek, Stefan A. and Kalwarczyk, Tomasz and Fiakowski, Marcin and Holyst, Robert
Title: Crossover regime for the diffusion of nanoparticles in polyethylene glycol solutions: influence of the depletion layer
Abstract: The viscosity in soft matter systems is a scale dependent quantity. In solutions the viscosity of nanoprobes of size R approaches the viscosity when R exceeds the radius of gyration of the R(g). The nano to macroviscosity crossover occurs for R similar R(g). Here we analyze diffusion in a polymer (polyethylene glycol) of nanoparticles in the crossover regime. We report a scale diffusion coefficient in this regime due to non-uniform in the depletion layer around particles. The phenomenological of the slow diffusion coefficient as a function of probe size is to the same scaling for macroscopic viscosity as a function of polymer size.
Pages: 7181-7186
Journal: SOFT MATTER
Volume: 7
ID: ISI:000293412900006
Year: 2011
DOI: 10.1039/c0sm01357a