Cholesteric Liquid Crystal Polymeric Coatings for Colorful Artificial Muscles and Motile Humidity Sensor Skin Integrated with Magnetic Composites

摘要

Structural colorful cholesterics show impressive susceptibility to externalstimulation, leading to applications in electro/mechano-chromic devices.However, out-of-plane actuation of structural colorful actuators based oncholesterics and the integration with other stimulation remains underdeveloped.Herein, colorful actuators and motile humidity sensors are developedusing humidity-responsive cholesteric liquid crystal networks (CLCNs) andmagnetic composites. The developed colorful actuator can exhibit synergisticout-of-plane shape morphing and color change in response to humidity, withCLCNs as colorful artificial muscles. Through the integration with magneticcontrol, the motile sensor can be navigated to open and confined spaceswith the aid of friction to detect local relative humidity. The integration ofmulti-stimulation actuation of cholesteric magnetic actuators will expandthe research frontier of structural colorful actuators and motile sensors forconfined spaces.