| Autor: |
Razbin M; Department of Energy Engineering and Physics, Amirkabir University of Technology, Tehran 14588, Iran., Benetatos P; Department of Physics, Kyungpook National University, 80 Daehakro, Bukgu, Daegu 41566, Republic of Korea. |
| Jazyk: |
angličtina |
| Zdroj: |
Polymers [Polymers (Basel)] 2022 Dec 22; Vol. 15 (1). Date of Electronic Publication: 2022 Dec 22. |
| DOI: |
10.3390/polym15010044 |
| Abstrakt: |
Kinks can appear along the contour of semiflexible polymers (biopolymers or synthetic ones), and they affect their elasticity and function. A regular sequence of alternating kink defects can form a semiflexible nanospring. In this article, we theoretically analyze the elastic behavior of such a nanospring with a point magnetic dipole attached to one end while the other end is assumed to be grafted to a rigid substrate. The rod-like segments of the nanospring are treated as weakly bending wormlike chains, and the propagator (Green's function) method is used in order to calculate the conformational and elastic properties of this system. We analytically calculate the distribution of orientational and positional fluctuations of the free end, the force-extension relation, as well as the compressional force that such a spring can exert on a planar wall. Our results show how the magnetic interaction affects the elasticity of the semiflexible nanospring. This sensitivity, which is based on the interplay of positional and orientational degrees of freedom, may prove useful in magnetometry or other applications. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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