Alessandro Fiasconaro, Fernando falo
We present a phenomenological dynamical model able to describe the stretching features of a length \textit{vs} applied force DNA curve. As concerning the chain, the model grounds on the discrete worm-like chain model with the elastic modifications, which properly describes the elongation features at low and intermediate forces. At high forces the dynamics, developed under a double well potential with a cubic term, accounts for the narrow transition present in the DNA elongation (overstretching). An good agreement between simulation and experiment is obtained.
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http://arxiv.org/abs/1205.6126
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