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O: Fachverband Oberflächenphysik
O 63: Focus Session: Functional Molecules at Surfaces III
O 63.6: Vortrag
Mittwoch, 18. März 2020, 12:00–12:15, TRE Ma
Mechanical transmission of rotational motion between molecular-scale gears — •Huang-Hsiang Lin1,2, Alexander Croy1, Rafael Gutiérrez1, Christian Joachim3, and Gianaurelio Cuniberti1,4 — 1Institute for Materials Science and Max Bergmann Center of Biomaterials, TU Dresden, 01069 Dresden, Germany — 2Max Planck Institute for the Physics of Complex Systems, 01187 Dresden, Germany — 3GNS and MANA Satellite, CEMES-CNRS, 29 rue J. Marvig, 31055 Toulouse Cedex, France — 4Dresden Center for Computational Materials Science, TU Dresden, 01062 Dresden, Germany
Manipulating and coupling molecule gears is the first step towards realizing molecular-scale mechanical machines[1]. Here, we theoretically investigate the behavior of such gears using molecular dynamics simulations[2]. Specifically, for a single hexa (4-tert-butylphenyl) benzene molecule, we show that the rotational-angle dynamics corresponds to the one of a Brownian rotor. For two such coupled gears, we extract the effective interaction potential and find that it is strongly dependent on the center of mass distance. Finally, we study the collective motion of a train of gears.
[1]W.-H. Soe, S. Srivastava and C. Joachim, J. Phys. Chem. Lett., 6462 (2019)
[2]H.-H. Lin, A. Croy, R. Gutierrez, C. Joachim and G. Cuniberti, arXiv:1910.06644 (2019)