Stretching self-interacting, partially directed, flexible and semi-flexible polymers by an external force - Condensed Matter > Statistical MechanicsReport as inadecuate




Stretching self-interacting, partially directed, flexible and semi-flexible polymers by an external force - Condensed Matter > Statistical Mechanics - Download this document for free, or read online. Document in PDF available to download.

Abstract: We study the model of a partially directed flexible or semi-flexiblehomopolymer on a square lattice, subject to an externally applied force, in adirection either parallel to, or perpendicular to the preferred direction. Thepolymer is self-interacting and can therefore undergo a collapse transition. Weshow that this model can be solved and we obtain the force-temperature phasediagrams which, for the case of flexible polymers, agree with that of Brak etal obtained using a different method. At sufficiently low temperatures, thepolymer conformation changes from compact to coil state as the force isincreased beyond a critical value. This transition is second or first order forthe completely flexible or semi-flexible polymer, respectively.



Author: Pui-Man Lam, Yi Zhen

Source: https://arxiv.org/







Related documents