AdhesionForce lift_mode molecular_self_assembly Roughness suspended_graphene ReflexLens AM-KPFM DomainSwitching BoronNitride Polyvinylidene_fluoride HardDiskMedia BismuthVanadate Pipette StyreneBeads Sidewall Genetic ElectrostaticForceMicroscopy nanomechanical SolarCell UnivCollegeLondon Current Conductive AFM Step Alkane CuParticle MESA structure semifluorinated_alkanes FloppyDisk Fujian AmplitudeModulation Au111 SiWafer self-assembly doped Tapping