Superlubricity of graphene nanoribbons on gold surfaces

Kawai, S.; Benassi, A.; Gnecco, E.; Sode, H.; Pawlak, R.; Feng, X.; Mullen, K.; Passerone, D.; Pignedoli, C. A.; Ruffieux, P.; Fasel, Roman; Meyer, E. (2016). Superlubricity of graphene nanoribbons on gold surfaces. Science, 351(6276), pp. 957-961. American Association for the Advancement of Science 10.1126/science.aad3569

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The state of vanishing friction known as superlubricity has important applications for energy saving and increasing the lifetime of devices. Superlubricity, as detected with atomic force microscopy, appears when sliding large graphite flakes or gold nanoclusters across surfaces, for example. However, the origin of the behavior is poorly understood because of the lack of a controllable nanocontact. We demonstrated the superlubricity of graphene nanoribbons when sliding on gold with a joint experimental and computational approach. The atomically well-defined contact allows us to trace the origin of superlubricity, unraveling the role played by ribbon size and elasticity, as well as by surface reconstruction. Our results pave the way to the scale-up of superlubricity and thus to the realization of frictionless coatings.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Departement of Chemistry and Biochemistry

UniBE Contributor:

Fasel, Roman

Subjects:

500 Science > 570 Life sciences; biology
500 Science > 540 Chemistry
500 Science > 530 Physics

ISSN:

0036-8075

Publisher:

American Association for the Advancement of Science

Language:

English

Submitter:

Roman Fasel

Date Deposited:

05 Jan 2017 11:23

Last Modified:

06 Jan 2017 22:27

Publisher DOI:

10.1126/science.aad3569

BORIS DOI:

10.7892/boris.90576

URI:

https://boris.unibe.ch/id/eprint/90576

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