Nonlinear Response of Grafted Semiflexible Polymers in Shear Flow

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Using Brownian-hydrodynamic and lattice-Boltzmann simulations, we study the nonlinear response of grafted semiflexible polymers to shear flow as a function of shear rate, grafting density, and chain stiffness. Simulation results for brush height and flow stagnation layer height agree well with a mean-field theory that incorporates the interplay of hydrodynamic screening and drag-induced polymer deformation. Our predictions for the stagnation height show excellent agreement with recent experiments on the nonlinear hydrodynamic drag of DNA-grafted colloids held, in a laser trap.
Publisher
AMER CHEMICAL SOC
Issue Date
2009-05
Language
English
Article Type
Article
Keywords

PARTICLE DYNAMICS SIMULATION; SMART NANOFLUIDIC CHANNELS; NUCLEAR-PORE COMPLEXES; BROWNIAN DYNAMICS; GOOD SOLVENT; BRUSHES; LAYERS; DESORPTION; SURFACES; RHEOLOGY

Citation

MACROMOLECULES, v.42, no.10, pp.3650 - 3655

ISSN
0024-9297
DOI
10.1021/ma900184e
URI
http://hdl.handle.net/10203/98003
Appears in Collection
NT-Journal Papers(저널논문)
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