Abstract
We evaluate the force-length relation for short model chains. It is shown that this relation is markedly different when evaluated for static and dynamic model chains with rigid segments. The relation also differs for chains with rigid segments when they are isolated and coupled to a canonical heatbath, respectively. Furthermore, it is derived that the variation of the masses along the chain only has a small influence on the force-length relation. On the other hand, restricting the motion of the chain by walls perpendicular to the chain extension has a pronounced effect. We especially find that in this situation the chain has a finite equilibrium length.
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Dedicated to Professor W. Pechhold on the occasion of his 60th birthday
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Reineker, P., Siegert, G.R. & Winkler, R.G. Force-length relation for a short freely jointed chain: mass and volume dependence. Colloid Polym Sci 269, 1090–1098 (1991). https://doi.org/10.1007/BF00654116
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DOI: https://doi.org/10.1007/BF00654116