ForceMapping Zhi Styrene Metal Insulator GaP Conductivity Pore AdhesionForce Praseodymium NiFe Polypropylene MESA structure Gong LiftMode Ucl SiliconCrystal single_layer LeakageCurrent HACrystal Fendb Topography Graphene Lanthanum_aluminate Steps HOPG aluminum_nitride dichalcogenide Layer Holes Fujian SurfaceChange Roughness Hair FrictionalForce