SoftSample Polyvinylidene SurfaceOxidation Growing temp_control non_contact BariumTitanate Piezoresponse contact NUS CrystalGrowing MetalCompound Water Collagen Heat EvatecAG PolycrystallineFerroelectricBCZT lift_mode ScanningSpreadingResistanceMicroscopy CancerCell Ecoli Mfm KPFM light_emission Ni-FeAlloy Composite Co/Cr/Pt 2dMaterials Composition conductive Thermoplastic_polyurethane PVAP3HT food PtfeFilter tip_bias_mode