| Autor: |
Ghatak A; Division of Engineering and Applied Sciences, Harvard University, Cambridge, 02138 Massachusetts, USA. aghatak@iitk.ac.in, Mahadevan L |
| Jazyk: |
angličtina |
| Zdroj: |
Physical review letters [Phys Rev Lett] 2005 Jul 29; Vol. 95 (5), pp. 057801. Date of Electronic Publication: 2005 Jul 25. |
| DOI: |
10.1103/PhysRevLett.95.057801 |
| Abstrakt: |
We study the behavior of a naturally straight highly extensible elastic filament subjected to large extensional and twisting strains. We find that two different phases can coexist for a range of parameter values: the plectoneme and the solenoid. A simple theory based on a neo-Hookean model for the material of the filament and accounting for the slender geometry suffices to explain these observations, and leads to a phase diagram that is consistent with observations. Extension and relaxation experiments on these phases show the presence of large hysteresis loops and sawtooth-like force-displacement curves which are different for the plectoneme and the solenoid. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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