Volume 81, Number 5, March 2008
|Number of page(s)||6|
|Section||Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics|
|Published online||19 February 2008|
Shear-induced repulsion of a semiflexible polymer from a wall
Physics Department, Technical University Munich - 85748 Garching, Germany
Accepted: 18 January 2008
We consider the shear-induced repulsion of a single polymer from a no-slip boundary at finite temperature and zero Reynolds number. Extending the asymptotic Fokker-Planck analysis for a dumbbell model to a rod of finite length L, the repulsive force is found to scale as with shear rate , temperature T, and surface separation Z. This prediction is confirmed by hydrodynamic simulations for stiff polymers and also found to be approximately valid for semiflexible and (for high enough shear rates) even flexible polymers.
PACS: 47.57.Ng – Polymers and polymer solutions / 47.15.G- – Low-Reynolds-number (creeping) flows / 83.10.Mj – Molecular dynamics, Brownian dynamics
© EPLA, 2008
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.