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Updated: Jan 27, 2026

An Electrochemical Cholesteric Liquid Crystalline Device for Quick and Low-Voltage Color Modulation
Published on: February 27, 2019
Patterned Full-Color Reflective Coatings Based on Photonic Cholesteric Liquid-Crystalline Particles
Alberto Belmonte1,2, Tom Bus1,2, Dirk J Broer1,3,2
1Stimuli-Responsive Functional Materials and Devices, Department of Chemical Engineering , Eindhoven University of Technology , P.O. Box 513, 5600 MB Eindhoven , The Netherlands.
Abstract:
An easy approach to pattern angular-independent, multicolor reflective coatings based on cholesteric liquid-crystalline (CLC) particles is presented. CLC particles are fabricated by emulsification, which is a scalable, cost-effective, and environmentally friendly synthesis process. The photonic particles can be easily dispersed in a binder to produce reflective coatings. Furthermore, a simple strategy to remove the photonic cross-communication between the particles has been developed. By incorporating a reactive blue/green absorbing dye into the network structure of the CLC particles the cross-communication is absorbed by the dye, leading to well-defined structural colors. Moreover, we demonstrate the possibility of producing patterned multicolor images by controlled swelling of the particles by the binder.
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