Surface evolution caused by curvature driven forces based on natural exponential pair potential

摘要

Based on the natural exponential pair potential U (R) =Ce-R/λ0,the interaction potential between curved surface body and on surface particle is studied.Firstly,the interaction potential is written as a function of curvatures through the differential geometry.Secondly,idealized numerical experiments are designed to test the accuracy of curvature-based potential.Then,the driving forces induced by curvatures are analyzed,which confirms that micro/nano-curved surface bodies can induce driving forces;curvatures and the gradient of curvatures are the essential elements forming the driving forces.Finally,by combining with the curvature-based potential and driving forces,the movements on surface particles and the evolution of surface morphology of curved surface bodies are predicted.