Record Details

Effect of hydrodynamic interaction on partially stretched polymers

DSpace at IIT Bombay

View Archive Info
 
 
Field Value
 
Title Effect of hydrodynamic interaction on partially stretched polymers
 
Creator SAIN, A
 
Subject dna-molecules
dynamics
flow
 
Description We compute the effect of hydrodynamic interaction and stretching on the fluctuation properties of a polymer, with its end points held fixed. Computing the preaveraged hydrodynamic tensor exactly for this geometry, we study both flexible and semiflexible polymer chains, such as Zimm, freely jointed chain, and wormlike chain (WLC) models. We compare the spectra of relaxation-time scales for the effective normal modes of these models. The spectra differ across models with respect to the degree of stretch, but their power-law scaling with low mode numbers turns out to be the same. The characteristics of the transverse modes of WLC agree very well with the experimental data on DNA. The crossover scaling function for < 1/r >, the inverse of the distance along the polymer contour, yields a modified formula for the size of a "Pincus blob," appropriate for the fixed-end boundary condition.
 
Publisher AMER PHYSICAL SOC
 
Date 2011-07-16T20:13:23Z
2011-12-26T12:49:56Z
2011-12-27T05:35:47Z
2011-07-16T20:13:23Z
2011-12-26T12:49:56Z
2011-12-27T05:35:47Z
2008
 
Type Article
 
Identifier PHYSICAL REVIEW E, 77(6), -
1539-3755
http://dx.doi.org/10.1103/PhysRevE.77.061919
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4520
http://hdl.handle.net/10054/4520
 
Language en