Adsorption of polymers anchored to membranes

Polymers, which are attached to a membrane at one of their ends, exert an e ntropic pressure, which curves the membrane away from the polymers. It is s hown that adsorption which arises from a short-ranged potential between the polymer and the membrane has a large influence on the curvature of the mem brane, leading to a decrease of the entropically induced curvature. If one ignores the finite size of the anchor segment, the polymer-induced curvatur e does not change sign and vanishes in the limit of strong adsorption and a pure contact potential. If one includes the finite size of the anchor segm ent, the membrane beads towards the polymer for sufficiently strung adsorpt ion.