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We successfully prepared the modified M-DNA molecular wires by the insertion of the divalent zinc ions (Zn 2+ ) in every base pair of λ-DNA molecules. We found that the current–voltage (I–V) characteristics of M-DNA are distinctively different from those measured using other types of DNA molecules including λ-DNA: one of the unique features of the modified M-DNA molecular wires was the metallic...
We have studied the current-voltage characteristics of λ- and poly-DNA molecules attached on the gap formed between two Au metal electrodes. Under high humidity condition, all types of deoxyribonucleic acid (DNA) show a similar shape in I-V curves, as well as a comparable magnitude in current level at the given voltage. The conductivity of DNA molecules, however, was drastically changed after minimizing...
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