Engineering and Technology

Geometric phase-encoded stimuli-responsive cholesteric liquid crystals for visualizing real-time remote monitoring: humidity sensing as a proof of concept

S. Li, Z. Chen, et al.

Discover an innovative visual sensing platform designed by Shi-Long Li and colleagues, harnessing the unique properties of cholesteric liquid crystal polymers to create real-time visual patterns. This groundbreaking research showcases how humidity-responsive films can dynamically alter vortex beams, paving the way for advanced remote humidity monitoring solutions.

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Index

Abstract

This study presents a visual sensing platform using geometric phase encoding of stimuli-responsive cholesteric liquid crystal polymers (CLCPs) for real-time visual pattern generation, eliminating the need for frequency change measurements. A humidity-responsive CLCP film encoded with a q-plate pattern demonstrates that humidity changes alter the shape of the vortex beam reflected from the CLCP. A prototype remote humidity monitoring platform is developed, leveraging the directionality and transmission properties of orbital angular momentum-carrying laser beams. This approach offers a novel sensing platform for CLCP-based sensors with promising practical applications.

Publisher

Light: Science & Applications

Published On

Jan 26, 2024

Authors

Shi-Long Li, Zhao-Yi Chen, Peng Chen, Wei Hu, Chaohong Huang, Sen-Sen Li, Xuejia Hu, Yan-Qing Lu, Lu-Jian Chen

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