GaP Lanthanum_aluminate Pipette Calcite CopperFoil GaN BiFeO3 Sperm MechanicalProperties cross section SiliconCrystal Polymer Pores Foil atomic_layer Tape self-assembled_monolayer H-BN Glass Hafnia semifluorinated_alkane Nickel 2d_materials PatternedSapphireSubstrat LateralForceMicroscopy temperature controller AFM MfmPhase Yeditepe_University FM-KPFM PvdfBead SmalScan HexacontaneFilm PetruPoni_Institute Conduct lithography