Observation of normal-force-independent superlubricity in mesoscopic graphite contacts
نویسندگان
چکیده
منابع مشابه
Observation of high-speed microscale superlubricity in graphite.
A sheared microscopic graphite mesa retracts spontaneously to minimize interfacial energy. Using an optical knife-edge technique, we report first measurements of the speeds of such self-retracting motion (SRM) from the mm/s range at room temperature to 25 m/s at 235°C [corrected]. This remarkably high speed is comparable with the upper theoretical limit found for sliding interfaces exhibiting s...
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2D or 3D layered materials, such as graphene, graphite, and molybdenum disulfide, usually exhibit superlubricity properties when sliding occurs between the incommensurate interface lattices. This study reports the superlubricity between graphite and silica under ambient conditions, induced by the formation of multiple transferred graphene nanoflakes on the asperities of silica surfaces after th...
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This contribution describes the morphology and energetic stability of different types of nanostructured carbon, including fullerenes, nanotubes, scrolls, peapods, and more complex foams. When structurally perfect, these systems are very stable even under extreme conditions. Specific structural defects offer an unusual, energetically accessible path to an inter-conversion between different isome...
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Robust electrical contact of bulk conductors to two-dimensional (2D) material, such as graphene, is critical to the use of these 2D materials in practical electronic devices. Typical metallic contacts to graphene, whether edge or areal, yield a resistivity of no better than 100 Ω μm but are typically >10 kΩ μm. In this Letter, we employ single-crystal graphite for the bulk contact to graphene i...
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Superlubricity between graphite and silica is achieved under ambient conditions, induced by the formation of multiple transferred graphene nanoflakes (GNFs) on a silica surface. As reported by Jinjin Li and co-workers in article number 1700616, the friction coefficient could be reduced to 0.0003 at a maximal local contact pressure of 700 MPa because of the extremely weak interaction and easy sl...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2016
ISSN: 2469-9950,2469-9969
DOI: 10.1103/physrevb.94.081405