Tennis-ball state of a self-avoiding wormlike polymer on a spherical surface
Department of Physics and Astronomy, University of Waterloo - Waterloo, Ontario, Canada, N2L 3G1
Accepted: 8 April 2011
Using Monte Carlo simulations of a wormlike chain that contains the excluded-volume interaction, we demonstrate that a directionally anisotropic state exists at high surface coverage, when the chain is confined to a spherical surface. The isotropic-anisotropic transition has first-order characteristics and can be compared with the isotropic-nematic transition observed in lyotropic polymer systems, both driven by the excluded-volume interaction. Unlike a nematic state, the anisotropic state observed here displays the so-called tennis-ball conformation, coupling the polymer-segment orientation preference with positional order.
PACS: 36.20.Ey – Conformation (statistics and dynamics) / 68.47.Pe – Langmuir-Blodgett films on solids; polymers on surfaces; biological molecules on surfaces / 87.15.ak – Monte Carlo simulations
© EPLA, 2011