atomic_layer FM_KPFM HDD Lateral AdhesionForce PECurve DiffractiveOpticalElements Copper Aluminium_Oxide Polymer PolyvinylAcetate MultiferroicMaterials PiezoelectricForceMicroscopy hard_disk_media PDMS PvdfBead PatternedSapphireSubstrat Spain gallium_nitride Beads IIT-chennai Zagreb Forevision India SThM Optical DeflectionOptics doped PtfeFilter Hysteresys LiquidCrystal dichalcogenide MfmPhase WS2 MagneticForceMicroscopy