| 초록 |
In this study, we developed a fluidic photonic crystal reflective display. The photonic crystal was made up of anionically charged acrylic colloidal polymer dispersed in non-aqueous medium. In a dispersion, colloidal particles self-assembled into face centered cubic structure by electrostatic repulsive interaction between particles. With DC voltage biasing, the colloidal lattice spacing was changed and the diffracted color was also changed by Bragg’s law. Such electrical tuning of color was utilized as a full color display device. When the display cell was operating with DC voltage, there was no electrochemical reactions which are inevitable in aqueous system. To overcome the aggregation of particles in oil, the surface charge of colloidal system was controlled by using a specific charging agent. |
