Operational and environmental conditions regulate the frictional behavior of two-dimensional materials.

ABSTRACT: The friction characteristics of single-layer h-BN, MoS2, and graphene were systematically investigated via friction force microscopy measurements at various operational (e.g., normal force and sliding speed) and environmental (e.g., relative humidity and thermal annealing) conditions. The low friction characteristics of these single-layer materials were clearly observed from the normal force-dependent friction results, and their interfacial shear strengths were further estimated using a Hertz-plus-offset model. In addition, speed-dependent friction characteristics clearly demonstrated two regimes of friction as a function of sliding speed - the first is the logarithmic increase in friction with sliding speed regime at sliding speeds smaller than the critical speed and the second is the fri

SUBMITTER: Tran-Khac BC 

PROVIDER: S-EPMC6759862 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature