Rajeev Kapri — IISER Mohali #
Dynamic Transitions in DNA Unzipping: Scaling of Hysteresis Loop Area #
We study the unzipping of a double stranded DNA whose ends are subjected
to a time dependent periodic force with frequency \(\omega\) and amplitude
\(G\). By varying the frequency of the applied force it is possible to bring
the DNA from the zipped or and unzipped state to a dynamic state showing
hysteresis. We found that the area of the hystresis loop scales as
\(1/\omega\) in high frequencies whereas, it scales as \(G^{\alpha}
\omega^{\beta}\) with exponents \(\alpha = 1\) and \(\beta = 5/4\) at low
frequencies.