Statistics of polymer adsorption under shear flow

Details Statistics of polymer adsorption under shear flow Statistics of polymer adsorption under shear flow

2009-10-09

arxiv.org/abs/0910.1752v1

Physics

Condensed Matter

Soft Condensed Matter

10 figures

Scientific paper

Using non-equilibrium Brownian dynamics computer simulations, we have investigated the steady state statistics of a polymer chain under three different shear environments: i) linear shear flow in the bulk (no walls), ii) shear vorticity normal to the adsorbing wall, iii) shear gradient normal to the adsorbing wall. The statistical distribution of the chain end-to-end distance and its orientational angles are calculated within our monomer-resolved computer simulations. Over a wide range of shear rates, this distribution can be mapped onto a simple theoretical finite-extensible-nonlinear-elastic dumbbell model with fitted anisotropic effective spring constants. The tails of the angular distribution functions are consistent with scaling predictions borrowed from the bulk dumbbell model. Finally, the frequency of the characteristic periodic tumbling motion has been investigated by simulation as well and was found to be sublinear with the shear rate for the three set-ups, which extends earlier results done in experiments and simulations for free and tethered polymer molecules without adsorption.

Affiliated with

Also associated with

No associations

Rating

Statistics of polymer adsorption under shear flow does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Statistics of polymer adsorption under shear flow, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Statistics of polymer adsorption under shear flow will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-51591