GaN PANI Current ContactModeDot Calcite piezoelectric force microscopy SKKU CuFoil FailureAnlaysis high_resolution Battery HACrystal Tin disulfide align Celebration LightEmiting Inorganic DIWafer Hole Chloroform Formamidinium_lead_iodide dichalcogenide VerticalPFM Lateral_Force_Microscopy LateralForceMicroscopy Step Phenanthrene Defects AdhesionForce domain_switching electrospinning KelvinProbeForceMicroscopy FrictionalForce light_emitting BismuthVanadate