Ultrasoft colloids

Remarkably, MCT describes well the key glassy features around the fi -relaxation for both G and G" without essentially any adjustable parameters the plateau Gp and minimum G values are taken from the experiments, whereas the additional mode coupling parameters (usually referred to as a, b, and B) assume constant values for all test systems [225,256]. It is also worth noting that MCT describes the pre-transitional approach to the glass for hard spheres [238], and it was successfully applied well within the glassy state for ultrasoft colloids [225]. 

The dynamical behavior of macromolecules in solution is strongly affected or even dominated by hydrodynamic interactions [6,104,105]. Erom a theoretical point of view, scaling relations predicted by the Zimm model for, e.g., the dependencies of dynamical quantities on the length of the polymer are, in general, accepted and confirmed [106]. Recent advances in experimental single-molecule techniques provide insight into the dynamics of individual polymers, and raise the need for a quantitative theoretical description in order to determine molecular parameters such as diffusion coefficients and relaxation times. Mesoscale hydrodynamic simulations can be used to verify the validity of theoretical models. Even more, such simulations are especially valuable when analytical methods fail, as for more complicated molecules such as polymer brushes, stars, ultrasoft colloids, or semidilute solutions, where hydrodynamic interactions are screened to a certain degree. Here, mesoscale simulations still provide a full characterization of the polymer dynamics. 

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