Collapse Transition of Two-Dimensional Flexible and Semiflexible Polymers

Details Collapse Transition of Two-Dimensional Flexible and Semiflexible Polymers Collapse Transition of Two-Dimensional Flexible and Semiflexible Polymers

2007-01-18

arxiv.org/abs/cond-mat/0701434v1

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.97.158302

The nature of the globule-coil transition of surface-confined polymers has been an issue of debate. Here this 2D collapse transition is studied through a partially directed lattice model. In the general case of polymers with positive bending stiffness ($\Delta>0$), the collapse transition is {\em first-order}; it becomes {\em second-order} only in the limiting case of zero bending stiffness ($\Delta\equiv 0$). These analytical results are confirmed by Monte Carlo simulations. We also suggest some possible future experiments.

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