DYNAMICS OF A POLYAMPHOLYTE HOOKED AROUND AN OBSTACLE

Authors
SCHIESSEL H SOKOLOV IM BLUMEN A
Citation
H. Schiessel et al., DYNAMICS OF A POLYAMPHOLYTE HOOKED AROUND AN OBSTACLE, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 56(3), 1997, pp. 2390-2393
Citations number
29
Categorie Soggetti
Physycs, Mathematical","Phsycs, Fluid & Plasmas
Journal title
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics → ACNP
ISSN journal
1063651X
Volume
56
Issue
3
Year of publication
1997
Part
A
Pages
2390 - 2393
Database
ISI
SICI code
1063-651X(1997)56:3<2390:DOAPHA>2.0.ZU;2-V
Abstract
We consider polyampholytes (PAs), which are polymers carrying positive and negative charges. The PAs are submitted to electric fields and co llide with single obstacles. Field separation of PAs depends drastical ly on tau(u), the time to unhook. Our analysis shows tau(u) to be very sensitive to the charge distribution of the chains: Unhooking is diff usional for regular, multiblock PAs, with tau(u) depending on the leng th of the blocks; for random charge distributions tau(u) increases exp onentially with the PAs' length and unhooking is subdiffusive.