TY - JOUR
T1 - Non-Amontons frictional behaviors of grain boundaries at layered material interfaces
AU - Song, Yiming
AU - Gao, Xiang
AU - Pawlak, Rémy
AU - Huang, Shuyu
AU - Hinaut, Antoine
AU - Glatzel, Thilo
AU - Hod, Oded
AU - Urbakh, Michael
AU - Meyer, Ernst
N1 - Publisher Copyright:
© The Author(s) 2024.
PY - 2024/12
Y1 - 2024/12
N2 - Against conventional wisdom, corrugated grain boundaries in polycrystalline graphene, grown on Pt(111) surfaces, are shown to exhibit negative friction coefficients and non-monotonic velocity dependence. Using combined experimental, simulation, and modeling efforts, the underlying energy dissipation mechanism is found to be dominated by dynamic buckling of grain boundary dislocation protrusions. The revealed mechanism is expected to appear in a wide range of polycrystalline two-dimensional material interfaces, thus supporting the design of large-scale dry superlubric contacts.
AB - Against conventional wisdom, corrugated grain boundaries in polycrystalline graphene, grown on Pt(111) surfaces, are shown to exhibit negative friction coefficients and non-monotonic velocity dependence. Using combined experimental, simulation, and modeling efforts, the underlying energy dissipation mechanism is found to be dominated by dynamic buckling of grain boundary dislocation protrusions. The revealed mechanism is expected to appear in a wide range of polycrystalline two-dimensional material interfaces, thus supporting the design of large-scale dry superlubric contacts.
UR - http://www.scopus.com/inward/record.url?scp=85208290685&partnerID=8YFLogxK
U2 - 10.1038/s41467-024-53581-y
DO - 10.1038/s41467-024-53581-y
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
C2 - 39488520
AN - SCOPUS:85208290685
SN - 2041-1723
VL - 15
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 9487
ER -