Conformational transitions of nongrafted polymers near an absorbing substrate.
We have performed multi-canonical chain-growth simulations of a polymer interacting with an adsorbing surface. The polymer, which is not explicitly anchored at the surface, experiences a hierarchy of phase transitions between conformations binding and nonbinding with the substrate. We discuss the phase diagram in the temperature-solubility plane and highlight the transition path through the free-energy landscape.
Bachmann
Michael
M
Institut für Theoretische Physik, Universität Leipzig, Augustusplatz 10/11, D-04109 Leipzig, Germany. Michael.Bachmann@itp.uni-leipzig.de
Janke
Wolfhard
W
D000042:Absorption; D000465:Algorithms; D001665:Binding Sites; D001704:Biopolymers / Q000032:analysis* / Q000737:chemistry*; D003198:Computer Simulation; D004548:Elasticity; D008956:Models, Chemical; D008958:Models, Molecular; D011485:Protein Binding; D011487:Protein Conformation; D011506:Proteins / Q000032:analysis / Q000737:chemistry* / Q000648:ultrastructure*
D001704:Biopolymers; D011506:Proteins