| AVS 54th International Symposium | |
| Advanced Surface Engineering | Monday Sessions |
| Session SE-MoM |
| Session: | Hard and Nanocomposite Coatings: Synthesis, Structure, and Properties |
| Presenter: | A.N. Ranade, Northwestern University |
| Authors: | A.N. Ranade, Northwestern University M.E. Graham, Northwestern University Y.W. Chung, Northwestern University |
| Correspondent: | Click to Email |
The heating of vehicles such as cars and planes is directly dependent on the absorption of solar radiation. Approximately half of the energy that is incident upon vehicles can be attributed to near infrared (IR) radiation of wavelengths in the range of 800-1600 nm. Reflecting instead of absorbing IR radiation would lower cabin temperatures considerably, thereby improving passenger comfort and fuel economy. An inorganic coating that is transparent to visible, absorbing to UV, and reflecting to IR radiation is desired to meet these goals. Doping a TiO2 matrix with well-dispersed metal atoms produces a film that acts as a plasma with specific electromagnetic properties. By controlling the metal atom concentration, one can tune the wavelength at which electromagnetic radiation is reflected. This paper discusses the properties of TiO2 films doped with varying metal atom concentrations. The films are made by reactive magnetron sputtering and evaluated by AFM (surface roughness), XRD (structure), and UV-VIS-IR spectroscopy (optical properties).