MESA structure Vortex VerticalPFM Croatia Solution Indent UnivCollegeLondon membrane SolarCell mechanical property Aluminium_Oxide Chemical_Vapor_Deposition EPFL NusEce EFM Neodymium mfm_amplitude Hafnium_dioxide semifluorinated alkane AtomicLayer Hair LateralPFM LiquidImaging Bmp Film Tin disulfide NanoLithography PolyvinylAcetate CompactDisk AM_SKPM Implant piezoelectric force microscopy Sapphire MolybdenumDisulfide pinpoint mode