Motion of nanoprobes in complex liquids within the framework of the length-scale dependent viscosity model

This paper deals with the recent phenomenological model of the motion of nanoscopic objects (colloidal particles, proteins, nanoparticles, molecules) in complex liquids. We analysed motion in polymer, micellar, colloidal and protein solutions and the cytoplasm of living cells using the length-scale...

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Bibliographic Details
Published in:Advances in colloid and interface science 2015-09, Vol.223, p.55-63
Main Authors: Kalwarczyk, Tomasz, Sozanski, Krzysztof, Ochab-Marcinek, Anna, Szymanski, Jedrzej, Tabaka, Marcin, Hou, Sen, Holyst, Robert
Format: Article
Language:English
Subjects:
Colloids - chemistry
Complex liquids
Diffusion
Length-scale dependence
Models, Chemical
Nanoparticles - chemistry
Proteins - chemistry
Soft matter
Solutions - chemistry
Solvents
Temperature
Viscosity
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Summary:This paper deals with the recent phenomenological model of the motion of nanoscopic objects (colloidal particles, proteins, nanoparticles, molecules) in complex liquids. We analysed motion in polymer, micellar, colloidal and protein solutions and the cytoplasm of living cells using the length-scale dependent viscosity model. Viscosity monotonically approaches macroscopic viscosity as the size of the object increases and thus gives a single, coherent picture of motion at the nano and macro scale. The model includes interparticle interactions (solvent-solute), temperature and the internal structure of a complex liquid. The depletion layer ubiquitously occurring in complex liquids is also incorporated into the model. We also discuss the biological aspects of crowding in terms of the length-scale dependent viscosity model. [Display omitted] •The viscosity is length-scale dependent.•Discussed model is valid in polymers, colloids and living cells.•The model unifies motion at all length-scales.•The model includes interparticle interactions.
ISSN:0001-8686
1873-3727
DOI:10.1016/j.cis.2015.06.007