Inside back cover of Advanced Materials

Post date: Jul 29, 2020 11:05:01 AM

Sang Seok Lee, Shin‐Hyun Kim, and Sihun Park design onion‐like photonic multishells with distinct photonic bandgaps. The multilayered structure is spontaneously created in emulsion drops by consecutive steps of phase separation between cholesteric liquid crystals (CLCs) and hydrophilic liquid, triggered by material exchange with the continuous phase. During the phase separation, a chiral dopant is unevenly partitioned in the CLC shells, resulting in multiple stopbands. The photonic multishells provide multi‐wavelength lasing and advanced optical barcoding.