margarine FailureAnalysis Epoxy kelvin probe force microscopy #EC Potential Piezoelectric cross section CuSubstrate Hafnium_dioxide Ni-FeAlloy ForceVolumeImage Materials NCM Trench PVAP3HT EFMAmplitude mfm_amplitude NiFe AEAPDES EvatecAG Oxidation exfoliate LateralForce TiO2 IVSpectroscopy Regensburg GaN Solar SmalScan LiftMode PpLdpe CntFilm ScanningKelvinProbeMicroscopy CaMnO3