Regensburg 2022 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 19: Poster Monday: Scanning Probe Techniques 1

O 19.10: Poster

Montag, 5. September 2022, 18:00–20:00, P4

Surface science with haptic feedback — •Maximilian Koall¹, Denis Heitkamp², Jaccomo Lorenz², Philipp Lensing², and Philipp Rahe¹ — ¹Universität Osnabrück, Barbarastraße 7, 49076 Osnabrück, Germany — ²Hochschule Osnabrück, Albrechtstraße 30, 49076 Osnabrück, Germany

Modern scanning probe microscopy requires intuitive 3D tip positioning and direct access to 3D physical data for interpretation. Still, it is common practice to rely on time-consuming 2D control protocols with only very few approaches involving 3D virtual reality methods [1].

Here, we employ a haptic device for moving the tip at the microscopic scale by hand. An immediate feedback from the measurement signals that reflect the interaction of the tip with the sample is provided, allowing for a quick and intuitive exploration of conductivity landscapes and force fields at surfaces as well as for atom manipulation and tip preparation procedures.

We present the *offline* implementation for recorded data of the well-studied system PTCDA/Ag(111) in a virtual environment (Unity) for improved intuitive understanding of the physical properties. Furthermore, we discuss the approach to interface this system with the scan controller for *online* experiments. The 3D Systems Touch X is used to provide tip control and haptic feedback. The physical observable (tunneling current, frequency shift, damping, force or others) at the tip position in the recorded data is translated into haptic feedback.

[1] Leinen, P.; Green, M. F. B.; Esat, T.; Wagner, C.; Tautz, F. S.; Temirov, R. Beilenstein J. Nanotechnol. 2015, 6, 2148