Accurate statistics of a flexible polymer chain in shear flow

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/3723

Title:	Accurate statistics of a flexible polymer chain in shear flow
Authors:	Das, Dibyendu Sabhapandit, Sanjib
Issue Date:	Oct-2008
Publisher:	American Physical Society
Citation:	Physical Review Letters, 2008, Vol.101, 188301
Abstract:	We present exact and analytically accurate results for the problem of a flexible polymer chain in shear flow. Under such a flow the polymer tumbles, and the probability distribution of the tumbling times tau of the polymer decays exponentially as ~exp(-alphatau/tau0) (where tau0 is the longest relaxation time). We show that for a Rouse chain this nontrivial constant alpha can be calculated in the limit of a large Weissenberg number (high shear rate) and is in excellent agreement with our simulation result of alpha~=0.324. We also derive exactly the distribution functions for the length and the orientational angles of the end-to-end vector R of the polymer.
Description:	Open Access
URI:	http://hdl.handle.net/2289/3723
ISSN:	E-ISSN: 1079-7114 P-ISSN: 0031-9007
Alternative Location:	http://arxiv.org/abs/0809.2131 http://dx.doi.org/10.1103/PhysRevLett.101.188301
Copyright:	2008 The American Physical Society
Appears in Collections:	Research Papers (TP)

Files in This Item:

File	Description	Size	Format
2008 PRL_V101_188301.pdf	Restricted Access	230.72 kB	Adobe PDF	View/Open