Heat chemical_compound Multiferroic_materials Blend I-VSpectroscopy Ni-FeAlloy atomic_steps Pvdf Heating Beads Nanostructure SThM EPFL BismuthVanadate graphene_hybrid Phenanthrene ContactModeDot nanomechanical Scanning_Thermal_Microscopy Magnets Water Reduction Protein single_layer fe_nd_b InorganicCompound Wang Laser CuSubstrate PDMS DeoxyribonucleicAcid LDPE Stiffness HexagonalBN WPlug