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Tracer diffusion inside fibrinogen layers
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DOI：10.1063/1.4862170.png)
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摘要
En 中文
We investigate the obstructed motion of tracer (test) particles in crowded environments by carrying simulations of two-dimensional Gaussian random walk in model fibrinogen monolayers of different orientational ordering. The fibrinogen molecules are significantly anisotropic and therefore they can form structures where orientational ordering, similar to the one observed in nematic liquid crystals, appears. The work focuses on the dependence between level of the orientational order (degree of environmental crowding) of fibrinogen molecules inside a layer and non-Fickian character of the diffusion process of spherical tracer particles moving within the domain. It is shown that in general particles motion is subdiffusive and strongly anisotropic, and its characteristic features significantly change with the orientational order parameter, concentration of fibrinogens, and radius of a diffusing probe. (C) 2014 AIP Publishing LLC.
Keyword:
ANISOTROPIC DIFFUSION
ANOMALOUS DIFFUSION
SPHERES
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期刊
IF:
3.1
论文数:
7.2W
被引数:
23.2W
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