New Communication in Adv. Mater.

posted Feb 25, 2017, 10:00 PM by Shin-Hyun Kim
Sang Seok Lee, Hyeon Jin Seo,Yun Ho Kim, and Shin-Hyun Kim, "Structural Color Palettes of Core-Shell Photonic Ink Capsules containing Cholesteric Liquid Crystals", Advanced Materials, accepted for publication (2017).

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 colours caused by dual photonic bandgaps, resulting in a rich variety of colour on the optical palette. Moreover, the microcapsules can switch the colours from either core or shell depending on the selection of light-handedness.