AAO frequency_modulation Multiferroic_materials Scratch Magnets F14H20 UnivCollegeLondon AM-KPFM Polyimide BismuthFerrite Tungsten Photovoltaics TungstenDeposition SoftSample C60H122 Sic PetruPoni_Institute self-assembly DomainSwitching Mechanical&nanotechnology MolybdenumDisulfide Cancer Leakage Calcium optoelectronics blended polymers FAFailureAnlaysis Polystyrene Treatment Tape MfmAmplitude Thermal CntFilm C_AFM DeoxyribonucleicAcid