Workfunction Polyvinylidene_fluoride Patterns CeNSE_IISc Tin sulfide LFM Edwin HfO2 KelvinProbeForceMicroscopy Defect HafniumDioxide semifluorinated_alkane BaTiO3 Corrosion CalciumHydroxide Deposition F14H20 Beads ChemicalCompound temp_control Al2O3 oxide_layer IISCBangalore Thermal HardDisk MagneticForceMicroscopy PatternedSapphireSubstrat hetero_structure Pattern PinpointPFM MolybdenumDisulfide Defects polymeric_arrays hard_disk_media HardDiskMedia