W₁₈O₄₉ is a kind of non-stoichiometric tungsten oxide (WO_3-x). At present, the researches on the preparation of W₁₈O₄₉ at home and abroad mostly focus on the preparation methods of W₁₈O₄₉ nanowires and nanorods. W₁₈O₄₉ nanorod can be successfully prepared by sputtering method.

W₁₈O₄₉/PDMS coated insulating glass can be widely used in the future. It not only has fine visible light transmission, but good near-infrared shielding ability. This kind of glass can modulate the solar energy intake effectively, so as to save energy to the greatest extent.

As an oxide of tungsten, W₁₈O₄₉ not only has fine visible light transmittance, but good near-infrared shielding ability. Therefore, it can be used to prepare heat insulation film for building window and automobile window.

As glass coating of W₁₈O₄₉ can guarantee high visible light transmissivity and good thermal insulating property of the glass at the same time, it has high application value in architectural windows. This kind of glass coating can effectively control the energy exchange through the window.