title: Shape anisotropy of polymers in disordered environment.
abstract: We study the influence of structural obstacles in a disordered environment on the size and shape characteristics of long flexible polymer macromolecules. We use the model of self-avoiding random walks on diluted regular lattices at the percolation threshold in space dimensions d=2 and d=3. Applying the pruned-enriched Rosenbluth method, we numerically estimate rotationally invariant universal quantities such as the averaged asphericity <A(d)> and prolateness <S> of polymer chain configurations. Our results quantitatively reveal the extent of anisotropy of macromolecules due to the presence of structural defects.
authors.affiliation: Institut für Theoretische Physik and Centre for Theoretical Sciences (NTZ), Universität Leipzig, Postfach 100920, D-04009 Leipzig, Germany. viktoria.blavatska@itp.uni-leipzig.de
authors.forename: Viktoria
authors.initials: V
authors.lastname: Blavatska
authors.forename: Wolfhard
authors.initials: W
authors.lastname: Janke
mesh_terms: D016880:Anisotropy; D046911:Macromolecular Substances / Q000737:chemistry; D008956:Models, Chemical; D015394:Molecular Structure; D010316:Particle Size; D011108:Polymers / Q000737:chemistry*
chemical_list: D046911:Macromolecular Substances; D011108:Polymers