Thermal fluctuations of elastic filaments with spontaneous curvature and torsion.
نویسندگان
چکیده
We study the effects of thermal fluctuations on thin elastic filaments with spontaneous curvature and torsion. We derive analytical expressions for the orientational correlation functions and for the persistence length of helices and find that this length varies nonmonotonically with the strength of thermal fluctuations. In the weak fluctuation regime, the persistence length of a spontaneously twisted helix has three resonance peaks as a function of the twist rate. In the limit of strong fluctuations, all memory of the helical shape is lost.
منابع مشابه
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We examine the effects of thermal fluctuations on thin elastic filaments with non– circular cross–section and arbitrary spontaneous curvature and torsion. Analytical expressions for orientational correlation functions and for the persistence length of helices are derived, and it is found that this length varies non–monotonically with the strength of thermal fluctuations. In the weak fluctuation...
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عنوان ژورنال:
- Physical review letters
دوره 85 11 شماره
صفحات -
تاریخ انتشار 2000