Fig. 4.
Normalized translational self-diffusion coefficients (Fig. 3) Dt/Dt(0) (circles) for two different temperatures (red and purple circles denote 280 and 300 K, respectively) after separation of the rotational contributions. The purple line superimposed on the data is a guide to the eye obtained from a polynomial fit indicating the temperature-independent master-curve. The upper and lower dashed purple lines indicate the upper and lower 96% prediction bounds, respectively. The blue lines denotes the colloidal short-time self-diffusion for hard spheres (light blue, solid) and charged spheres (dark blue, dashed). The inset in the upper right corner illustrates the flow field (light blue stream line plot) generated by the movement of three spheres (velocities are denoted by blue arrows) and therefore experiencing a hydrodynamic forces (pink arrows).