2d_materials FloppyDisk India AM_SKPM #EC BTO PVA silicon_oxide Phenanthrene PhaseImaging Foil Permalloy ThermalDetectors Organic Blend Galfenol Granada TemperatureControlledAFM Gallium_Arsenide LateralPFM Corrosion Filter ring shape FFM Self-assembledMonolayer Conductive AFM heterojunctions PECurve CntFilm semifluorinated alkane Temasek_Lab Chromium Al2O3 PhaseChange Composition