This title appears in the Scientific Report :
2005
Please use the identifier:
http://dx.doi.org/10.1088/1742-5468/2005/01/P01007 in citations.
The coil-globule transition of confined polymers
The coil-globule transition of confined polymers
We study long polymer chains in a poor solvent, confined to the space between two parallel hard walls. The walls are energetically neutral and impose only a geometric constraint which changes the properties of the coil - globule (or 'theta') transition. We. nd that the theta temperature in...
Saved in:
Personal Name(s): | Hsu, H. P. |
---|---|
Grassberger, P. | |
Contributing Institute: |
John von Neumann - Institut für Computing; NIC |
Published in: | Journal of statistical mechanics: theory and experiment, 2005 (2005) S. p01007 |
Imprint: |
Bristol
IOP Publ.
2005
|
Physical Description: |
p01007 |
DOI: |
10.1088/1742-5468/2005/01/P01007 |
Document Type: |
Journal Article |
Research Program: |
Betrieb und Weiterentwicklung des Höchstleistungsrechners |
Series Title: |
Journal of Statistical Mechanics : Theory and Experiment
2 |
Subject (ZB): | |
Publikationsportal JuSER |
We study long polymer chains in a poor solvent, confined to the space between two parallel hard walls. The walls are energetically neutral and impose only a geometric constraint which changes the properties of the coil - globule (or 'theta') transition. We. nd that the theta temperature increases monotonically with the width D between the walls, in contrast to recent claims in the literature. Put in a wider context, the problem can be seen as a dimensional crossover at a tricritical point of a phi(4) model. We roughly verify the main scaling properties expected for such a phenomenon, but we. nd also somewhat unexpected very long transients before the asymptotic scaling regions are reached. In particular, instead of the expected scaling R similar to N-4/7 exactly at the (D-dependent) theta point, we found that R increases less fast than N-1/2, even for extremely long chains. |