Polyvinylidene_fluoride FAPbI3 molecule FM_KPFM ForceVolumeMapping IMT_Bucharest Yeditepe_University Step Mapping Monisha LFM SmallScan Conductivity Polarization CeNSE_IISc Cell semifluorinated alkane ShenYang Vanadate Dimethicone ReflexLens fluoroalkane Aggregated_molecules TemperatureControl Adhesion Pipette phase_change HydroGel pinpoint mode Magnets layers temperature controller AFM EvatecAG frequency_modulation YttriaStabilizedZirconia