Moiré-Tile Manipulation-Induced Friction Switch of Graphene on a Platinum Surface

Liu, Zhao and Vilhena, J. G. and Hinaut, Antoine and Scherb, Sebastian and Luo, Feng and Zhang, Junyan and Glatzel, Thilo and Gnecco, Enrico and Meyer, Ernst. (2023) Moiré-Tile Manipulation-Induced Friction Switch of Graphene on a Platinum Surface. Nano Letters, 23 (10). pp. 4693-4697.

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Official URL: https://edoc.unibas.ch/94138/

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Friction control and technological advancement are intimately intertwined. Concomitantly, two-dimensional materials occupy a unique position for realizing quasi-frictionless contacts. However, the question arises of how to tune superlubric sliding. Drawing inspiration from twistronics, we propose to control superlubricity via moiré patterning. Friction force microscopy and molecular dynamics simulations unequivocally demonstrate a transition from a superlubric to dissipative sliding regime for different twist angles of graphene moirés on a Pt(111) surface triggered by the normal force. This follows from a novel mechanism at superlattice level where, beyond a critical load, moiré tiles are manipulated in a highly dissipative shear process connected to the twist angle. Importantly, the atomic detail of the dissipation associated with the moiré tile manipulation─i.e., enduring forced registry beyond a critical normal load─allows the bridging of disparate sliding regimes in a reversible manner, thus paving the road for a subtly intrinsic control of superlubricity.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Nanomechanik (Meyer)
UniBasel Contributors:Hinaut, Antoine and Glatzel, Thilo and Meyer, Ernst
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Chemical Society
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:21 Jun 2023 06:01
Deposited On:21 Jun 2023 06:01

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