Dynamic photoprogramming of paintable liquid crystal photonic devices with multi-stability shows practical application in smart soft materials and responsive optics.However,there exist three key challenges that limit ...Dynamic photoprogramming of paintable liquid crystal photonic devices with multi-stability shows practical application in smart soft materials and responsive optics.However,there exist three key challenges that limit their development:achieving precise paintability with controllable viscosity and resolution,maintaining well-ordered liquid crystal photonic structures,and enabling multi-stable photoresponsive behavior.Here,we address these limitations by incorporating an intrinsic photoswitch into a cellulose-based liquid crystal system,further constructing a unique paintable helical photonic architecture featuring both multi-stability and dynamic light-actuation.The intrinsic chiral photoswitch enables multi-stable modulation of helical pitch,while optimized viscosity restrains the remarkable fluidity of traditional liquid crystal systems and matches proper surface anchoring,thereby allowing for paintability and programming of a photonic device.The cutting-edge single-step painting enables highly efficient,large-area and welldefined patterning of helical architectures on diverse flexible substrates,thereby promoting prospective applications in anti-counterfeiting,information encryption,and smart window-film.This strategy establishes a robust and versatile foundation that integrates practical explorations in soft matter photonics with state-of-the-art engineering applications,such as multifunctional interactive optical information systems and advanced intelligent flexible sensors.展开更多
基金supported by National Key Research and Development Program of China(2022YFA1203700)Basic Science Center of National Natural Science Foundation(T2488302)+5 种基金National Natural Science Foundation of China(22305079,2233000296,92356301,22338006,61822504,22108076,62275081 and 62505085)Innovation Program of Shanghai Municipal Education Commission,Scientific Committee of Shanghai(15XD1501400 and 2021-01-07-00-02-E00107)Shanghai Municipal Science and Technology Major Project(21JC1401700)“Shuguang Program”of Shanghai Education Development Foundation and Shanghai Municipal Education Commission(21SG29)Fellowship of China National Postdoctoral Program for Innovative Talents(BX20230125)Chenguang Program of Shanghai Education Development Foundation and Shanghai Municipal Education Commission(24CGA29),Shanghai Sailing Program(23YF1409000,24YF2709100),Postdoctoral Fellowship Program of CPSF(GZB20240218).
文摘Dynamic photoprogramming of paintable liquid crystal photonic devices with multi-stability shows practical application in smart soft materials and responsive optics.However,there exist three key challenges that limit their development:achieving precise paintability with controllable viscosity and resolution,maintaining well-ordered liquid crystal photonic structures,and enabling multi-stable photoresponsive behavior.Here,we address these limitations by incorporating an intrinsic photoswitch into a cellulose-based liquid crystal system,further constructing a unique paintable helical photonic architecture featuring both multi-stability and dynamic light-actuation.The intrinsic chiral photoswitch enables multi-stable modulation of helical pitch,while optimized viscosity restrains the remarkable fluidity of traditional liquid crystal systems and matches proper surface anchoring,thereby allowing for paintability and programming of a photonic device.The cutting-edge single-step painting enables highly efficient,large-area and welldefined patterning of helical architectures on diverse flexible substrates,thereby promoting prospective applications in anti-counterfeiting,information encryption,and smart window-film.This strategy establishes a robust and versatile foundation that integrates practical explorations in soft matter photonics with state-of-the-art engineering applications,such as multifunctional interactive optical information systems and advanced intelligent flexible sensors.
