DNA stretching in entangling media with oscillating electric fields is useful in DNA sequencing. We propose that stretching occurs around hairpin loops at the chain ends, caused by interactions with the medium. Brownian dynamics simulations show that this mechanism explains several experimental observations, including a resonance with varying field frequency.
R. S. Graham and R. G. Larson, Chem. Commun., 2011, 47, 337 DOI: 10.1039/C0CC02090G
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