Phenanthrene PolycrystallineFerroelectricBCZT Bismuth Fluoride tip_bias_mode Memory Hysteresys UnivCollegeLondon block_copolymer TappingMode Adhesive PUR FastScan Alloy SiliconCrystal Wonseok TriGlycineSulphate Piezo ItoGlass high_resolution Non-ContactMode INSP NiFe PtfeMembrane Dopped Graphene UTEM Holes BismuthFerrite cannabis CP-AFM membrane single_layer SurfaceOxidation Ferroelectric