| 초록 |
Monodisperse colloidal particles have an ability to form a crystalline array by self-assembly. These colloidal crystals diffract a selected wavelength in the visible range, so that show structural colors. In order to meet the practical demand, it is required to pattern them with a high-resolution. Herein, we demonstrate a single-step colloidal crystallization accompanying with the direct patterning by the regioselective epitaxial growth without any further processes. In the presence of macromolecules served as depletants as well as the 2D-patterned dimple structures on the substrates, a particle-dimple attraction overcomes interparticle and particle-plane attractions. Thus, a colloidal monolayer is deposited first along with the dimple patterns followed by further growth on the monolayer to form the multilayered colloidal crystals, that results in micropatterned structural colors. This method will suggest a novel means to fabricate structural color patterns for practical use. |
