Department of Chemical and Biomolecular Engineering (BK21+ Program), KAIST, Daejeon, 305-701, Republic of Korea.
Advanced Functional Materials Research Group, Korea Research Institute of Chemical Technology, Daejeon, 305-600, Republic of Korea.
Adv Mater. 2017 Jun;29(23). doi: 10.1002/adma.201606894. Epub 2017 Apr 3.
Photonic microcapsules with onion-like topology are microfluidically designed to have cholesteric liquid crystals with opposite handedness in their core and shell. The microcapsules exhibit structural colors caused by dual photonic bandgaps, resulting in a rich variety of color on the optical palette. Moreover, the microcapsules can switch the colors from either core or shell depending on the selection of light-handedness.
具有洋葱状拓扑结构的光子微胶囊采用微流控设计，在其核心和壳层中具有相反手性的胆甾相液晶。微胶囊表现出由双光子带隙引起的结构色，从而在光学调色板上产生丰富多样的颜色。此外，根据手性的选择，微胶囊可以从核心或壳层切换颜色。
