title: Robust microfluidic encapsulation of cholesteric liquid crystals toward photonic ink capsules.
abstract: Robust photonic microcapsules are created by microfluidic encapsulation of cholesteric liquid crystals with a hydrogel membrane. The membrane encloses the cholesteric core without leakage in water and the core exhibits pronounced structural colors. The photonic ink capsules, which have a precisely controlled bandgap position and size, provide new opportunities in colorimetric micro-thermometers and optoelectric applications.
authors.affiliation: Department of Chemical and Biomolecular Engineering (BK21+ Program), KAIST, Daejeon, 305-701, Korea.
authors.forename: Sang Seok
authors.initials: SS
authors.lastname: Lee
authors.forename: Bomi
authors.initials: B
authors.lastname: Kim
authors.forename: Su Kyung
authors.initials: SK
authors.lastname: Kim
authors.forename: Jong Chan
authors.initials: JC
authors.lastname: Won
authors.forename: Yun Ho
authors.initials: YH
authors.lastname: Kim
authors.forename: Shin-Hyun
authors.initials: SH
authors.lastname: Kim
keywords: double-emulsion drops; liquid crystals; microcapsules; microfluidics; photonic crystals