| Diffusion of spheres in crowded suspensions of rods (2005) | |||||||||||
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| THE JOURNAL CHEMICAL PHYSICS Diffusion spheres crowded suspensions rods Kyongok Kang Forschungszentrum Julich Institute fur Festkorper Forschung IFF Weiche Materie Julich Germany Gapinski Institute Physics Mickiewicz University Umultowska Poznan Poland Lettinga Buitenhuis and Meier Forschungszentrum Julich Institute fur Festkorper Forschung IFF Weiche Materie Julich Germany Ratajczyk Institute Physics Mickiewicz University Umultowska Poznan Poland Jan Dhont Forschungszentrum Julich Institute fur Festkorper Forschung IFF Weiche Materie Julich Germany Patkowski Institute Physics Mickiewicz University Umultowska Poznan Poland Received July accepted October published online January Translational tracer diffusion spherical macromolecules crowded suspensions rodlike colloids investigated Experiments are done using several kinds spherical tracers virus suspensions wide range size ratios the length the rods and the diameter the tracer sphere covered combining several experimental methods uorescence correlation spectroscopy for small tracer spheres dynamic light scattering for intermediate sized spheres and video microscopy for large spheres Fluorescence correlation spectroscopy shown measure long time diffusion only for relatively small tracer spheres Scaling diffusion coef cients with predicted for static networks not found for our dynamical network rods with the mesh size the network Self diffusion tracer spheres the dynamical network freely suspended rods thus fundamentally differ | |||||||||||
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