FIGURE 1.

Illustration of hyaluronan aqueous solutions containing random and mobile mesh structures. The mesh size of the random structure is characterized by ξ assuming the cubic lattice approximation shown in the figure. The normal diffusion of a single particle is expressed by a sphere (displacement sphere) whose radius is the mean-square displacement, (see text). The diffusion over a short distance observed for a short duration corresponds to the small displacement sphere, and long-distance diffusion obtained by long-time observation is expressed by the large displacement sphere. The relation between the size of displacement spheres and random mesh generate the space dependence of D_obs.