Fet AAO Ferrite IIT-chennai nanobar FAPbI3 IISCBangalore Resistance MfmPhase piezoelectric force microscopy Hole Roughness strontiu_titanate CeNSE_IISc Reading KelvinProbeForceMicroscopy InLiquid Change Pattern Pinpoint PFM Tin disulfide Indium_tin_oxide fifber BoronNitride Anneal Lift Bacteria Butterfly SiliconCrystal C_AFM Polydimethylsiloxane Etch AEAPDES amplitude_modulation Tungsten_disulfide