Cobalt-dopedIronOxide oxide_layer Terrace thermal_conductivity Composite Optic NtuEee WS2 Foil Phenanthrene DNA Nanostructure Molybdenum_disulfide 2d_materials Strontium TempControl heterojunctions blended polymers PolyvinylAcetate ring shape Step PvdfFilm BariumTitanate CVD Graphene Singapore EPFL CopperFoil PVAC IIT-chennai Ananth Litho Water Dopped fluoroalkane