SKM 2023 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 42: Quantum dots: Growth
HL 42.3: Vortrag
Donnerstag, 30. März 2023, 15:30–15:45, POT 151
1D Nanowires on DNA mold-based template — •Madhuri Chennur1, Borja Rodriguez-Barea1, Jazavandi-Ghamsari Shima1, Archa Jain1, Türkan Bayrak1, Ulrich Kemper2, Jingjing Ye2, Christoph Hadlich2, Ralf Seidel2, and Artur Erbe1 — 1Institute of Ion Beam PhysicsundMaterial Science, HZDR — 2Peter Debye Institute for Soft MatterPhysics, Universität Leipzig, Germany
Sensors have a fundamental role in improving the world around us. For increasing sensitivity and faster response, new bottom-up approaches are required. DNA nanotechnology allows the creation of nanostructure arrays that can serve the purpose.
We study the controlled growth of 1D metallic nanostructures using DNA origami templates. The DNA nanomolds are folded via staples to obtain the desired conformation. The functionalized template provides the active site for a localized seed nanoparticle attachment, thus allowing metallization by electroless plating. We report continuous Pd and Au 1D nanowires based on this method.
The conductance of the assembled nanostructures through two-probe measurements was investigated. Different origami templates lead to diverse metal morphologies, which influence electronic properties. Temperature-dependent measurements determined the transport mechanism of these nanowires, proving the first step toward an electronic nanosensor.