Optical encryption,exploiting degrees of freedom of light as parameters to encode and decode information,plays an indispensable role in our daily life.Responsive structural color materials can give real-time visible f...Optical encryption,exploiting degrees of freedom of light as parameters to encode and decode information,plays an indispensable role in our daily life.Responsive structural color materials can give real-time visible feedback to external stimuli and provide ideal candidates for optical encryption.However,the development of existing responsive structural color materials is hindered by poor repeatability and long feedback time.Meanwhile,there are only few strategies to exploit structural colors in multichannel information encryption.Herein,bioinspired by the structural color variation due to a change in angle arising from the movement of animal’s scales or feathers,we developed a general multichannel information encryption strategy using a two-dimensional deformable kirigami arranging orientations of the grating arrays by design.The kirigami grating sheet shows rapid,repeatable,and programmable color change.This strategy utilizes the topological space deformation to guide the change of optical property,which suggests new possibilities for spatial and spectral encryption as well as mechano-sensing and camouflage.展开更多
In the realm of modern cryptography and anti-counterfeiting,innovative approaches are crucial to encode sensitive information securely.Tailored responsive structural colors have garnered significant interest due to th...In the realm of modern cryptography and anti-counterfeiting,innovative approaches are crucial to encode sensitive information securely.Tailored responsive structural colors have garnered significant interest due to their feature-rich spectra and high sensitivity to external stimuli.However,high costs and complex processing involved in integrating the various delicate microstructures have impeded their widespread development.In this study,we present a straightforward multilevel chromatic encryption scheme utilizing direct-writing gradient-crosslinked microdomes.The solvent-responsive structural color of each microdome,arising from the synergistic effect of total internal reflections and interference,is adjusted independently across the entire visible region.Each microdome functions as a signal recording unit,enabling multilevel color variations through a solventdependent development step.This approach facilitates the encoding of enhanced information into a single pixel.To demonstrate the efficacy of our method for advanced applications,we have prepared a collection of solvent-dependent multilevel codes for algorithm cryptography,showcasing its potential for high-level anti-counterfeiting and high-density optical data storage.展开更多
基金supported by the National Key R&D Program of China(2022YFE0202000 and 2018YFA0208500)the National Science Fund for Distinguished Young Scholars(22225502)+3 种基金the National Natural Science Foundation of China(22073107,21522308,and 22150410331)Bureau of International Cooperation,Chinese Academy of Sciences(027GJHZ2022044MI)K.C.Wong Education Foundation,National Key R&D Program of China(2018YFA0208501)Youth Innovation Promotion Association,Chinese Academy of Sciences.
文摘Optical encryption,exploiting degrees of freedom of light as parameters to encode and decode information,plays an indispensable role in our daily life.Responsive structural color materials can give real-time visible feedback to external stimuli and provide ideal candidates for optical encryption.However,the development of existing responsive structural color materials is hindered by poor repeatability and long feedback time.Meanwhile,there are only few strategies to exploit structural colors in multichannel information encryption.Herein,bioinspired by the structural color variation due to a change in angle arising from the movement of animal’s scales or feathers,we developed a general multichannel information encryption strategy using a two-dimensional deformable kirigami arranging orientations of the grating arrays by design.The kirigami grating sheet shows rapid,repeatable,and programmable color change.This strategy utilizes the topological space deformation to guide the change of optical property,which suggests new possibilities for spatial and spectral encryption as well as mechano-sensing and camouflage.
基金supported by the National Key Research and Development Program of China (2022YFE0202000,2018YFA0208500)the National Science Fund for Distinguished Young Scholars (22225502)+2 种基金the National Natural Science Foundation of China (22073107,51573192)NSFC Research Fund for International Young Scientists (22150410331)the External Co-operation Program of Chinese Academy of Sciences (027GJHZ2022044MI)。
文摘In the realm of modern cryptography and anti-counterfeiting,innovative approaches are crucial to encode sensitive information securely.Tailored responsive structural colors have garnered significant interest due to their feature-rich spectra and high sensitivity to external stimuli.However,high costs and complex processing involved in integrating the various delicate microstructures have impeded their widespread development.In this study,we present a straightforward multilevel chromatic encryption scheme utilizing direct-writing gradient-crosslinked microdomes.The solvent-responsive structural color of each microdome,arising from the synergistic effect of total internal reflections and interference,is adjusted independently across the entire visible region.Each microdome functions as a signal recording unit,enabling multilevel color variations through a solventdependent development step.This approach facilitates the encoding of enhanced information into a single pixel.To demonstrate the efficacy of our method for advanced applications,we have prepared a collection of solvent-dependent multilevel codes for algorithm cryptography,showcasing its potential for high-level anti-counterfeiting and high-density optical data storage.
