multi_layer membrane PhaseChange Phosphide ItoGlass EFM SicMosfet PolyvinylAcetate PFM CopperFoil PVAC Liquid Granada Optoelectronic HfO2 blended polymers EFMAmplitude ReflexLens SSRM Melt STM ULCA aluminum_nitride Current C_AFM Strontium GranadaUniv CP-AFM BFO DataStorage FM-KPFM Titanate MetalCompound IIT-chennai Force-distance