Photovoltaics Butterfly Indent SPMLabs NtuEee MolybdenumDisulfide Self-assembledMonolayer Conductive AFM Metal-organicComplex MultiferroicMaterials Protein Scratch 2dMaterials Ceramics VinylAlcohol blended polymers SetpointMode Wildtype Anneal UnivMaryland AnodizedAluminumOxide molecular_beam gallium_nitride HBN AM-KPFM light_emission multi_layer ScratchMode TransitionMetal VerticalPFM CarbonNanotube Ferroelectric fluoroaalkane StrontiumTitanate LateralPFM