2-vinylpyridine Ni81Fe19 ferromagnetic MBE PyroelectricDetector Insulator StrontiuTitanate layers Film Strontium Plug piezoelectric force microscopy Lift Spincast Inorganic biocompatible StyreneBeads Mechinical BiasMode C_AFM Flake ContactModeDots Melt Tin sulfide Crystal PolyvinylideneFluoride AtomicSteps CuFoil Boron Lanthanum_aluminate Tin disulfide PolymerBlend SKPM OrganicCompound Piezo