F14H20 heterojunctions FastScan KelvinProbeForceMicroscopy HanyangUniv SrO LiquidImaging Ram Hexatriacontane MechanicalProperties Insulator Pinpoint PFM Cancer Austenite CuFoil ElectroDeposition Fet FFM LogAmplifier SiliconOxide Self-assembledMonolayer Tapping UnivCollegeLondon HACrystal YttriaStabilizedZirconia Liquid LeakageCurrent fluoroaalkane CancerCell Forevision nanomechanical RedBloodCell bias_mode Lift Vortex