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Stretching an heteropolymer

D. Bensimon·D. Dohmi·M. Mezard
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Abstract

We study the influence of some quenched disorder in the sequence of monomers on the entropic elasticity of long polymeric chains. Starting from the Kratky-Porod model, we show numerically that some randomness in the favoured angles between successive segments induces a change in the elongation versus force characteristics, and this change can be well described by a simple renormalisation of the elastic constant. The effective coupling constant is computed by an analytic study of the low force regime.

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D. Bensimon, D. Dohmi, M. Mezard. 1997-11-06. Stretching an heteropolymer. https://doi.org/10.1209/epl%2Fi1998-00558-3

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