Ceramic Lattice Floppy Multiferroic_materials CaMnO3 Polarization Fet optoelectronics SRAM MonoLayer EFM food mono_layer Hexacontane FM-KPFM Co/Cr/Pt frequency_modulation ContactModeDot LateralForceMicroscopy Biofilm PVAC Techcomp fe_nd_b Phenanthrene ShenYang TPU gallium_nitride Mapping CNT Pinpoint Chemical Vapor Deposition PFM Subhajjit HBN SSRM