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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
ISSN: E-ISSN: 1079-7114
P-ISSN: 0031-9007
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Copyright: 2008 The American Physical Society
Appears in Collections:Research Papers (TP)

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