Abstract
Direct conductivity measurements of thin uniform gold-coated DNA nanowires are presented. Gold-coated DNA conductive wires deposited on a mica surface are visualized by SEM and conductivity of the wires are measured using nanomanipulators built inside the microscope. The measurements show that the conductivity is limited by defects, and the thicker the coating the higher the conductivity of the wires. These gold-coated DNA nanowires are promising candidates for molecular electronics. DNA-base nanomaterial to be used in new DNA-based molecular electronics.
Highlights
DNA is considered to be one of the most promising candidates for future molecular electronics
In this work we present direct conductivity measurements of such gold-coated DNA wires
The ascorbic acid and the gold solutions were inserted into a mixing chamber by two peristaltic pumps, such that the mixture flushed the surface ≈1 s after the mixing
Summary
1 Introduction DNA is considered to be one of the most promising candidates for future molecular electronics. Several types of DNA-based metalized nanowires have been recently reported. Among them are: new metalized form of DNA, E-DNA [1], and thin gold nanoparticlescoated DNA wires [2].
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