Magnetic Force Microscopy 2d_materials dielectric trench TCS ScratchMode DNA EFM Fe_film CaMnO3 ferromagnetic molecular_beam Mapping Force-distance tip_bias_mode MLCC small_scan TiO2 single_layer hydrocarbon dichalcogenide Mechinical LightEmiting HafniumDioxide ElectroDeposition HardDiskMedia Silver EvatecAG Pipette Ucl gallium_nitride FailureAnlaysis PvdfBead FM_SKPM Polyurethane BlockCopolymer