China FAPbI3 ConductingPolymer ForceVolumeImage Metal-organicComplex PANI Sio2 SrO tip_bias_mode FM_KPFM Boron GaP Heating HexagonalBN DomainSwitching Worcester_Polytechnic_Institute self_healing ScanningKelvinProbeMicroscopy ContactMode Nickel Jason molecular_self_assembly HafniumDioxide sputter SurfaceChange FailureAnalysis Nanofiber Battery Ucl Aluminium_Oxide NeodymiumMagnets CalciumHydroxide MfmAmplitude Conductive AFM Temasek_Lab