Dresden 2017 – wissenschaftliches Programm
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BP: Fachverband Biologische Physik
BP 22: Posters - Biomaterials and Biopolymers
BP 22.5: Poster
Dienstag, 21. März 2017, 14:00–16:00, P1A
functionalized DNA origami nanostructures for molecular electronics — •Türkan Bayrak1,2, Bezu Teschome1,2, Tommy Schonherr1, and Artur Erbe1 — 11 Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, 01328 Dresden,Germany. — 2Technische Universität Dresden, cfaed, 01062 Dresden, 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 devices. (1,2,3) This technique enables the precise positioning of metallic and semiconducting nanoparticles along the DNA structures.(4) In this study, two nanostructures, i.e. DNA origami nanotube and DNA origami molds (5), are used for the fabrication of nanoelectronic devices. To this end, the DNA origami nanotubes are modified to assemble 14 gold nanoparticles (AuNPs) along them. Then electroless gold deposition is used to selectively grow the AuNPs and create eventually continues nanowires. Similarly, AuNPs are also grown within the DNA origami molds. In order to investigate the transport properties of the so-fabricated nanostructures, a method is developed by electron beam lithography. Additionally, the assembly of heterogeneous nanostructures, i.e. AuNPs and quantum dots (QDs), on a single DNA origami nanotube is demonstrated and further metallized, thus representing a first step toward the fabrication of DNA origami-templated quantum dot transistors. 1Rothemund , Nature 440.7082 (2006) 2Teschome, et al. Langmuir 32.40 (2016) 3Samanta, et al. Nanoscale 7.6 (2015) 4Teschome, et al. Langmuir 31.46 (2015) 5Helmi, et al. Nano letters 14.11 (2014)