| 초록 |
Two- (2D) and three-dimensional (3D) photonic bandgap (PBG) crystals of the order of an optical wavelength have been intensively studies over the past decade because of their potential applications in areas such as mask for photolithography, lasers, optical filters, waveguides, and sensors. In this study, 2D and 3D colloidal crystals were successfully fabricated via successive contact line-movement method. The water evaporation assembled the colloidal particles into mono- or multi-layer at the meniscus edge. The lift-up rate of the back glass substrate affected the meniscus-thining rate and thus influenced in the colloidal particles assemble into 2D or 3D. This method was valid on the fabrication of mono-layered colloidal crystals with various sized colloidal particles. In addition, the multi-layered colloidal crystal was successfully fabricated via 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. |
