Regensburg 2022 – scientific programme
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O: Fachverband Oberflächenphysik
O 13: Nanostructures at Surfaces 2
O 13.4: Talk
Monday, September 5, 2022, 15:45–16:00, S052
DNA origami as reference systems for nano-metrology — •ziba akbarian1,2, birka lalkens1,2, michelle weinert3, ingo busch3, harald bosse3, and uta schlickum1,2 — 1Technische Universität Braunschweig, Braunschweig, Germany — 2Laboratory for Emerging Nanometrology (LENA), Braunschweig, Germany — 3Physikalisch Technische Bundesanstalt (PTB), Braunschweig, Germany
A key aspect of quantitative measurements is the traceability of all measurements to the international system of units (SI). DNA origami is capable of being traced back to SI units thanks to its precisely defined internal structures in 2D and 3D. Here, we will describe the possibilities of building reference systems for calibrating scanning probe instruments with μm resolution only that can be traced back to atomically precise structures. In order to accomplish this goal, we plan to fabricate DNA origami structures that include marks at well-defined positions to obtain measurable protrusions within the internal structures. The controlled fabrication of DNA origami structures that do not distort upon adsorption onto surfaces, in both liquid and air conditions will be surveyed as the first step in this research.