| 초록 |
Two- (2D) and three-dimensional (3D) colloidal photonic crystals have been intensively studied because of their potential applications in areas such as mask for photolithography, waveguides, lasers, and sensors. In this study, we introduce a new method for the fabrication of thin colloidal films. The contact line shape at the air-water-glass substrate, in vertical deposition, is important because the thickness of the colloidal crystals is influenced by it. In order to fabricate thin colloidal films, the steep contact line that is not affected by the other side is necessary. So we changed the contact line shape at the air-water-glass substrate by varying the tilted angle of a glass substrate dipped into the colloidal suspension and treating the one side of a glass substrate. We could fabricate the thin colloidal films, even mono-layered colloidal crystal through this method. We believe that these 2D and 3D colloidal crystals can be used as a mask for photolithography, a master mold for 2D regular arrays, and 3D photonic bandgap crystal template. |
