ElectroChemical PolyimideFilm Piezoresponse Regensburg plastic ULCA DeoxyribonucleicAcid medical Fe_film Resistance IISCBangalore KPFM Chungnam_National_University LFM rubber Sidewall solar_cell ForceVolumeImage CeramicCapacitor ConductingPolymer MechanicalProperties ElectrostaticForceMicroscopy Mechanical&nanotechnology HumanHair Zhi Ito UnivCollegeLondon Optoelectronic pinpoint mode Polystyrene LiftHeight C_AFM LiquidCrystal Boundary PhthalocyaninePraseodymium