Ananth BiasMode OpticalElement H-BN 2dMaterials PFM BismuthFerrite AIN ConductiveAFM PinpointNanomechanicalMode AlkaneFilm norganic TappingMode HanyangUniv electrospinning Formamidinium_lead_iodide Vanadate SurfaceChange Conductive AFM Graphite EvatecAG PvdfBead PvdfFilm fifber CeramicCapacitor INSP FrictionalForceMicroscopy Dimethicone Vacuum non_contact Pore OpticalWaveguides AdhesionForce ThinFilm NtuEee