title: Torque and twist against superlubricity.
abstract: Superlubricity between incommensurate surfaces provides a desired low-friction state essential for the function of small-scale machines. Here we demonstrate experimentally and theoretically that superlubricity in contacts lubricated by lamellar solids might be eliminated due to torque-induced reorientation coupled to lateral motion. We find that the possibility of reorientation always leads to stabilization of a high frictional state which corresponds to a commensurate configuration.
authors: Donetsk Institute for Physics and Engineering of NASU, 83144, Donetsk, Ukraine.
authors: Alexander E
authors: AE
authors: Filippov
authors: Martin
authors: M
authors: Dienwiebel
authors: Joost W M
authors: JW
authors: Frenken
authors: Joseph
authors: J
authors: Klafter
authors: Michael
authors: M
authors: Urbakh