CopperFoil SiliconCrystal Ferroelectric TipBiasMode FAPbI3 MagneticArray CP-AFM Fluoride Optic temp_control Temasek_Lab Potential AM_KPFM PVA Terrace plastic University_of_Regensburg SiliconeOxide DIWafer LiIonBattery doped LateralForceMicroscopy BTO PinPointMode FrictionalForceMicroscopy dielectric trench PiezoelectricForceMicroscopy PpLdpe IRDetector Indent Led INSP blended polymers Sic sputter