Regensburg 2022 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 25: Poster 1

HL 25.68: Poster

Mittwoch, 7. September 2022, 18:00–20:00, P2

Metallic nanowires assembled by DNA Origami — •Borja Rodríguez-Barea1, Shima Jazavandi-Ghamsari1, Archa Jain1, Türkan Bayrak1, Jingjing Ye2, Ralf Seide2, Enrique Samano3, and Artur Erbe11Institute of Ion Beam Physics and Material Science, Helmholtz-Zentrum Dresden-Rossendorf, Germany — 2Peter Debye Institute for Soft Matter Physics, Universität Leipzig, Germany — 3Centro de Nanociencias y Nanotecnología-UNAM, Ensenada, B.C., México

In the pursuing to increase the processing power, electronic circuits look for new bottom-up strategies. Namely, (DNA) nanotechnology has shown valuable tools for the creation of nanostructures of arbitrary shape that can be used as templates. Here we demonstrate the formation of 1D Au nanostructures based on DNA Origami templates. DNA nanomolds are employed, inside which gold deposition is employed by site-specific attached seeds. To prove their metallic nature, top-down approach allows us to perform temperature-dependent charge transport measurements along the nanostructures. Transport through these assemblies is strongly nonlinear and shows a decrease in conductance towards low temperatures. Thanks to the converging of both fabrication approaches, the shape of the nanowires can be controlled and measured. We use DNA-origami templates which are functionalized on their surface in order to create desired shapes of the metallic nanostructures and the nanoparticles show temperature dependent charge transport measurements reveal the dominating charge transport mechanisms along these wires.

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