Friction Reduction of Suspended Multilayer H-Bn Based on Electrostrain

•Friction reduction of suspended h-BN induced by electrostrain.•Weakening of the interfacial effect on suspended h-BN by electrostrain.•Modified PT model based on out-of-plane strain of two-dimensional materials.•Friction behavior dominated by the interfacial shear strength of suspended h-BN.•An analytical contact model for hemisphere-membrane contact pair.