| 초록 |
Colloidal crystals possess photonic bandgap properties; the regular arrays of colloids diffract a light with wavelength of bandgap and do not allow its propagation. This bandgap effect in visible range appears iridescent reflection color, which provides great potential of colloidal crystals as photonic raw materials. However, preparation of colloidal photonic crystals in practical manner still remains a challenge. In this talk, we report a facile method for the creation of colloidal photonic crystals with controlled shape and optical properties using photocurable colloidal suspensions. The repulsive colloidal particles dispersed in a photocurable resin spontaneously form face-centered cubic lattices, and UV-induced photopolymerization enable the rapid solidification. By combining these materials with microfluidics or photolithography techniques, photonic crystals are tailored to have desired shape, size and optical properties, thereby providing a practical platform for colloidal photonic crystals. |
