Dependence of static friction force on stiffness in a confined chain with the incommensurate and commensurate structrue

Abstract

Abstract It is used that a series of interacting atoms. They are confined between two sinusoidal substrate potentials. When the top substrate is driven by the external driving force, its velocity changes from zero to non-zero. The dependence of the static friction force on the strength is presented for the incommensurate(the spiral mean and the golden mean ) and commensurate structrue. It is found that incommensurate structures is more likely to produce superlubricate phenomenon more than commensurate structures under different stiffness coefficients.