| abstract |
The present invention relates to a method of coating a device comprising the steps of forming an inner coating layer on an article and forming an outer coating layer in contact with the inner coating layer. A first solution comprising metal oxide nanoparticles and a first solvent is applied to the article. The first solvent is removed to form the inner coating layer having the metal oxide nanoparticles on the article. A second solution comprising cerium oxide nanoparticles and a second solvent is applied to the article. The second solvent is removed to form the outer coating layer having the cerium oxide nanoparticles. Strengthening the bonding force between the metal oxide nano particles and the cerium oxide nano particles, for example, by coating a third solution on the inner coating layer and the outer coating layer, the third solution may be, for example, Water, ethanol, or a mixture thereof. |