Workfunction FrequencyModulation PetruPoni_Institute dichalcogenide phase_change piezoelectric force microscopy MagneticPhase CopperFoil Chemical Vapor Deposition Sadowski fe_nd_b Bismuth BCZT block_copolymer Sulfur CVD Titanate Mechinical OpticalElement SrO BiFeO3 temp_control PyroelectricDetector China Ram HDD Ananth hard_disk_media TemperatureControllerStage IIT-chennai semifluorinated alkane Annealing STO HOPG Friction