Abstract

There are many factors that change the structure of DNA, and at the end, will affect electronic transport in DNA molecules. From the previous study, we know that electrical current will increase for the higher electric field. The study is focused particularly on electric field influence for charge transport properties of poly(dG)-poly(dC) DNA molecules that are presented in terms of transmission probabilities of electron flow. We calculate transmission probabilities using transfer matrix and scattering matrix method with varying voltages and twisting motion frequencies. The result shows that the extended states shift to lower energy and the extended state band widen as voltage increasing.

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