The most stable situation of terminally attached soft layers is achieved by covalent bonding of polymer chains at one end to a solid surface. For sufficient high densities siggma (d-2) the distance d between grafted sites is less than the size of the polymer coil end the tethered layer falls into the brush regime. While the static properties e.g. density profile of polymer brushes in good and theta solvents have been extensively investigated both theoretically and experimentally, their dynamics have received much less attention probably due to the paucity of experimental methods.
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