Strain dependent twist-stretch elasticity in chiral filaments

Details Strain dependent twist-stretch elasticity in chiral filaments Strain dependent twist-stretch elasticity in chiral filaments

2007-09-05

arxiv.org/abs/0709.0558v1

Physics

Condensed Matter

Materials Science

Accepted for publication in Journal of Royal Society Interface

Scientific paper

Coupling between axial and torsional degrees of freedom often modifies the conformation and expression of natural and synthetic filamentous aggregates. Recent studies on chiral single-walled carbon nanotubes and B-DNA reveal a reversal in the sign of the twist-stretch coupling at large strains. The similarity in the response in these two distinct supramolecular assemblies and at high strains suggests a fundamental, chirality dependent non-linear elastic behaviour. Here, we seek the link between the microscopic origin of the non-linearities and the effective twist-stretch coupling using energy based theoretical frameworks and model simulations. Our analysis reveals a sensitive interplay between the deformation energetics and the sign of the coupling, highlighting robust design principles that determine both the sign and extent of these couplings. These design principles have been already exploited by Nature to dynamically engineer such couplings, and have broad implications in mechanically coupled actuation, propulsion and transport in biology and technology.

Affiliated with

Also associated with

No associations

Rating

Strain dependent twist-stretch elasticity in chiral filaments 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 Strain dependent twist-stretch elasticity in chiral filaments, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Strain dependent twist-stretch elasticity in chiral filaments will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-469887