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Regensburg 2022 – scientific programme

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O: Fachverband Oberflächenphysik

O 29: Metal substrates 1

O 29.1: Talk

Tuesday, September 6, 2022, 10:30–10:45, S052

Controlling the translation of a single molecule — •Grant J. Simpson1, Mats Persson2, and Leonhard Grill11University of Graz, Graz, Austria — 2University of Liverpool, Liverpool, UK

Controlling both of the orientation and the direction of translation of a single molecule is crucial to the understanding of molecular machines [1,2]. In addition, overcoming microscopic reversibility and realising unidirectional motion is a major criterion if a molecular machine is to do any meaningful work. Here, we report how single molecules can be translated in a directional manner over a metallic surface using voltage pulses from the tip of a scanning tunnelling microscope. Directionality of motion is possible due to translations occurring via an asymmetrically accessible intermediate state. The reaction pathway is discussed as well as how this molecular motion can be coupled to the motion of surface adsorbates.

[1] G. J. Simpson, V. García-López, A. D. Boese, J. Tour, L. Grill, Nat. Commun., 10, 4631 (2019) [2] G. J. Simpson, V. García-López, P. Petermeier, L. Grill, J. Tour, Nat. Nanotechnol., 12, 604 (2017)

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