| Diffusion of spheres in isotropic and nematic suspensions of rods (2006) | |||||||||||
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| THE JOURNAL CHEMICAL PHYSICS Diffusion spheres isotropic and nematic suspensions rods Kyongok Kang Forschungszentrum lich Institute Festk rper Forschung IFF Weiche Materie Julich Germany Wilk Institute Physics Mickiewicz University Umultowska Poznan Poland Buitenhuis Forschungszentrum lich Institute Festk rper Forschung IFF Weiche Materie Julich Germany Patkowski Institute Physics Mickiewicz University Umultowska Poznan Poland Jan Dhonta Forschungszentrum lich Institute Festk rper Forschung IFF Weiche Materie Julich Germany Received September accepted November published online January Diffusion small tracer sphere apoferritin isotropic and nematic networks virus discussed For tracer sphere that smaller than the mesh size the network screened hydrodynamic interactions between the sphere and the network determine its diffusion coef cient theory developed for such interactions well their relation the long time self diffusion coef cient Fluorescence correlation spectroscopy measurements mixtures apoferritin and virus are presented The long time self diffusion coef cient apoferritin measured function the virus concentration both the isotropic and nematic state directions parallel and perpendicular the nematic director The hydrodynamic screening length the virus network function concentration obtained combining these experimental data with the theory Surprisingly the screening length increases with increasing concentration nematic networks This due the increase the degree alignment | |||||||||||
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