Berlin 2018 – scientific programme
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BP: Fachverband Biologische Physik
BP 9: Postersession I
BP 9.19: Poster
Monday, March 12, 2018, 17:30–19:30, Poster A
DNA origami mold-based wires: Synthesis long metallic wires and its temperature dependent charge transport mechanism — •Türkan Bayrak1,2, Seham Helmi3, Jingjing Ye2,3, Jeffrey Kelling1, Tommy Schönherr1, Artur Erbe1,2, and Ralf Seidel2,3 — 1Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, 01328 Dresden,Germany. — 2Technische Universität Dresden, cfaed, 01062 Dresden, Germany. — 3Universität Leipzig, Ritterstraße 26, 04109 Leipzig, Germany
The DNA origami method provides a programmable bottom up approach for creating nanostructures of any desired shape, which can be used as scaffolds for nanoelectronics and nanophotonics device fabrications. This technique enables the precise positioning of metallic and semiconducting nanoparticles along the DNA nanostructures. In this study, DNA origami nanoMOLDS are used for the fabrication of nanoelectronic devices. To this end, electroless gold deposition is used to grow the AuNPs within the DNA origami nanoMOLDS and create eventually continues nanowires. In order to contact the fabricated nanostructues electrically, a method using electron-beam lithography was developed. Temperature-dependent characterizations for four wires exhibiting different conductance at RT were performed in order to understand the dominant conductance mechanisms from RT to 4.2K. Two of these nanowires showed metallic conductance. The other two wires deviated from pure metallic behavior and they showed thermionic, hopping and tunnelling conductance.