Compression and stretching of a self-avoiding chain in cylindrical nanopores

Details Compression and stretching of a self-avoiding chain in cylindrical nanopores Compression and stretching of a self-avoiding chain in cylindrical nanopores

2008-08-23

arxiv.org/abs/0808.3205v1

Physics

Condensed Matter

Soft Condensed Matter

4 + epsilon pages, 3 figures. To appear in Physical Review Letters

Scientific paper

10.1103/PhysRevLett.101.138101

Force-induced deformations of a self-avoiding chain confined inside a cylindrical cavity, with diameter $D$, are probed using molecular dynamics simulations, scaling analysis, and analytical calculations. We obtain and confirm a simple scaling relation $-f \cdot D \sim R^{-9/4}$ in the strong-compression regime, while for weak deformations we find $f \cdot D = -A(R/R_0) + B (R/R_0)^{-2}$, where $A$ and $B$ are constants, $f$ the external force, and $R$ the chain extension (with $R_0$ its unperturbed value). For a strong stretch, we present a universal, analytical force-extension relation. Our results can be used to analyze the behavior of biomolecules in confinement.

Affiliated with

Also associated with

No associations

Rating

Compression and stretching of a self-avoiding chain in cylindrical nanopores 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 Compression and stretching of a self-avoiding chain in cylindrical nanopores, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Compression and stretching of a self-avoiding chain in cylindrical nanopores will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-129210