Formamidinium_lead_iodide Multiferroic_materials C60H122 Zagreb Optoelectronic MultiferroicMaterials EFMAmplitude SAM #Materials MoS2 ForceMapping Hysteresys Steps LowDensityPolyethylene Graphene Hafnium_dioxide UTEM Tapping Holes SKKU Pyroelectric Tungsten PinPointMode Genetic MESA structure Layer DLaTGS Workfunction Gold Beads Silver Optical Anneal NtuEee MBE