Starostin, EL; van der Heijden, GH; (2008) Tension-induced multistability in inextensible helical ribbons. Phys Rev Lett , 101 (8) 084301 - ?.
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We study the nonmonotonic force-extension behavior of helical ribbons using a new model for inextensible elastic strips. Unlike previous rod models, our model predicts hysteresis behavior for low-pitch ribbons of arbitrary material properties. Associated with it is a first-order transition between two different helical states as observed in experiments with cholesterol ribbons. Numerical solutions show nonuniform uncoiling with hysteresis also occurring under controlled tension. They furthermore reveal a new uncoiling scenario in which a ribbon of very low pitch shears under tension and successively releases a sequence of almost planar loops. Our results may be relevant for nanoscale devices such as force probes.
|Title:||Tension-induced multistability in inextensible helical ribbons.|
|Open access status:||An open access version is available from UCL Discovery|
|Keywords:||Elasticity, Models, Chemical, Models, Theoretical, Molecular Conformation, Thermodynamics|
|UCL classification:||UCL > School of BEAMS > Faculty of Engineering Science > Civil, Environmental and Geomatic Engineering|
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