▎ 摘　　要

NOVELTY - The heating device (100) has a heating layer (120) formed on a substrate (110) by drying liquid such as ink or paint including graphene nanomaterials applied to the substrate. A direct current power supply (140) is electrically connected to the heating layer. The heating layer produces heat in presence of power. The nanomaterials dissipate electricity in the heating layer in response to application of power to the heating layer. The nanomaterials include graphene or graphene oxide nano-platelets. The substrate is made of glass, dielectric material, or polymer material. USE - Heating device, e.g., for home appliances. Uses include but are not limited to, e.g., furnace, space heater, clothes dryer, coffee makers, water heaters, as well as outdoor applications in cold climate locations such as in defrosting driveways, highways exit/entry ramps, street sideways, and runways of airports. ADVANTAGE - The heating device provides large uniform surface temperature due to the intrinsic high lateral thermal conductivity of graphene nanomaterials, particularly graphene nanoparticles (GNP). The GNP can improve the mechanical properties of the paintable heating device, such as stiffness, strength and surface hardness, and effectively provide barrier properties and serve as excellent electrical and thermal conductors. The ease by which a paint can be applied to diverse substances and surfaces can be used in making efficient heating devices provided that an electric source and electrodes are present. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method of forming a heating device. DESCRIPTION OF DRAWING(S) - The drawing shows the schematic view of a heating device. Heating device (100) Substrate (110) Heating layer (120) Electrodes (130,132) Power supply (140)