Adsorption of finite polymers in different thermodynamic ensembles
Abstract
We investigate the cooperative effects of a single finite chain of monomers near an attractive substrate by first constructing a conformational pseudo-phase diagram based on the thermal fluctuations of energetic and structural quantities. Then, the adsorption transition is analyzed in more detail. This is conveniently done by a microcanonical analysis of densities of states obtained by extensive multicanonical Monte Carlo simulations. For short chains and strong surface attraction, the microcanonical entropy turns out to be a convex function of energy in the transition regime. This is a characteristic physical effect and deserves a careful consideration in analyses of cooperative macrostate transitions in finite systems.
Keywords
Cite
@article{arxiv.1106.6216,
title = {Adsorption of finite polymers in different thermodynamic ensembles},
author = {Monika Möddel and Wolfhard Janke and Michael Bachmann},
journal= {arXiv preprint arXiv:1106.6216},
year = {2011}
}
Comments
5 pages, 5 figures, Computer Physics Communications Special Edition for Conference on Computational Physics Trondheim, Norway, June 23-26, 2010