Photonic Shells: Photonic Spring‐Like Shell Templated from Cholesteric Liquid Crystal Prepared by Microfluidics (Advanced Optical Materials 13/2017)

A solid-state photonic shell templated from cholesteric liquid crystal (CLC) is prepared using a microfluidic method with a reactive chiral mesogen mixture after UV curing and chiral dopant extraction. The resultant shells, presented by Soo-Young Park and Jong-Gyu Kum in article number 1700243, which can encapsulate/release materials by opening/closing pores, show a photonic crystal-like structure responding to changes of temperature and solvent quality by color change in reflection and cross communication between the CLC shells.