Lipowsky, ReinhardSeifert, Udo2011-12-232016-03-312011-12-232016-03-311991364340681http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-69521http://elib.uni-stuttgart.de/handle/11682/7835http://dx.doi.org/10.18419/opus-7818We theoretically study (i) a large membrane segment and (ii) a closed membrane surface or vesicle that adhere to another surface. The membrane segment can undergo unbinding transitions as a result of thermally excited shape fluctuations. These transitions are studied by renormalization group methods and by Monte Carlo simulations. The shape of a bound vesicle is determined by the interplay of bending and adhesion energies. This interplay leads to adhesion transitions from a free to a bound vesicle state even in the absence of shape fluctuations. Our theory helps to clarify the notion of a contact angle for membranes.eninfo:eu-repo/semantics/openAccessBiomembran , Vesikel , Adhäsion530Adhesion of membranes : a theoretical perspectivearticle