fluoroaalkane Piranha Scratch PolyimideFilm multi_layer Varistor HafniumDioxide Croatia Glass gallium_nitride tip_bias_mode Styrene Domain molecular_beam self_healing Polyvinylidene Polyaniline Bmp ThinFilm CrAu LiftMode I-VSpectroscopy suspended_graphene Wonseok VerticalPFM amplitude_modulation PolyvinylAcetate Solution Phase MechanicalProperty doped Magnetic ForceMapping CVD PVA