Smart hydrogel with color responsiveness is envisioned as one of the most promising materials for advanced information encryption and decryption platform,but the illumination-dependent way of decrypt-ing and reading i...Smart hydrogel with color responsiveness is envisioned as one of the most promising materials for advanced information encryption and decryption platform,but the illumination-dependent way of decrypt-ing and reading information leads to the worrying of concealment in some particular scenarios.Herein,we proposed a smart hydrogel information platform with dual imaging modes by utilizing the accom-panying behaviors in transparency change and heat releasing after crystallization of supercooled solution.For this smart hydrogel informa-tion platform,the hidden information could be written and decrypted by ink of ethylene glycol and decryption tool of seed crystal,respec-tively.Furthermore,in addition to the traditional optical imaging mode with the assistance of light illumination,the decrypted information on dual-imaging-mode hydrogel platform also could be read by thermal imaging mode in dark environment owing to the exothermic crystal-lization.The illumination-independent read mode based on heat radia-tion helps to improve the secrecy and safety of the decryption and read process.This investigation provides a facile and feasible strategy to design illumination-independent information platform that enables reading the encrypted information in secret.展开更多
基金This work was supported by the China Postdoctoral Science Foundation[2021M690157,2022T150668]National Natural Science Foundation of China[52103152]Ningbo Natural Science Foundation[2121J206].
文摘Smart hydrogel with color responsiveness is envisioned as one of the most promising materials for advanced information encryption and decryption platform,but the illumination-dependent way of decrypt-ing and reading information leads to the worrying of concealment in some particular scenarios.Herein,we proposed a smart hydrogel information platform with dual imaging modes by utilizing the accom-panying behaviors in transparency change and heat releasing after crystallization of supercooled solution.For this smart hydrogel informa-tion platform,the hidden information could be written and decrypted by ink of ethylene glycol and decryption tool of seed crystal,respec-tively.Furthermore,in addition to the traditional optical imaging mode with the assistance of light illumination,the decrypted information on dual-imaging-mode hydrogel platform also could be read by thermal imaging mode in dark environment owing to the exothermic crystal-lization.The illumination-independent read mode based on heat radia-tion helps to improve the secrecy and safety of the decryption and read process.This investigation provides a facile and feasible strategy to design illumination-independent information platform that enables reading the encrypted information in secret.
