| 초록 |
Colloidal crystals induced by self-assembly have potential for ink-jet printing due to their optical properties as color pigments. One of the way to generate colloidal crystal is by evaporating the droplet of colloidal dispersion. During the evaporation of colloidal dispersion droplet, monodisperse colloidal nanoparticles follow a radially outward flow caused by evaporative flux difference and reach the contact line of the droplet. Therefore, final deposits of the dispersion droplet show coffee-ring stain and form crystal structure, which limits their uses in color pigments. Herein, we create a relatively uniform deposit pattern, which has a non-iridescent property obtained using polymer additives and dynamic interfacial effects by temperature. Furthermore, by embedding colloidal assembly in the negative photoresist, followed by removing colloidal assembly selectively, inverted nanostructure with enhanced mechanical stability, which exhibits structural color can be obtained. |
