MBE NeodymiumMagnets Photovoltaics Wang PolyvinylideneFluoride HfO2 Hydroxyapatite molecular_self_assembly Array ContactMode Bismuth TransitionMetal Gold dielectric_trench ScanningKelvinProbeMicroscopy Inorganic BoronNitride NUS FAPbI3 frequency_modulation IRDetector LiIonBattery GranadaUniv Polyimide graphene_hybrid ConductiveAFM Styrene Vacuum Pinpoint PFM Korea ReflexLens single_layer Writing PetruPoni Perovskite