Printing Convertible Microstructures into Elastomer Matrix for Multiliquids Adaptive Information Encryption. Issue 2 (7th October 2022)

• Record Type: Journal Article
• Authors: Li, Boya; Ni, Haisong; Cai, Gao; Sha, Wenjing; Wang, Yangxin; Zhao, Huaixia; Cui, Jiaxi
• Is Part Of: Advanced materials technologies. Volume 8:Issue 2(2023)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-10-07
• Subjects: convertible microstructures -- information encryption -- printing -- multiliquids adaptivity; Materials science -- Periodicals; Technological innovations -- Periodicals; Materials science; Technological innovations; Periodicals; 620.1105
• DOI: 10.1002/admt.202201122
• Languages: English
• ISSNs: 2365-709X

Abstract

Abstract: Adaptive optical performance based on convertible microstructures is very useful for information encryption. However, the facile patterning of microstructures in reliable manner and the unclonable coding are still major challenges. The direct 3D printing of water droplets is reported as templates to polydimethylsiloxane (PDMS) precursor, followed by water evaporation in curing, which introduces convertible microcrease in the elastomeric matrix. The samples show optical response to liquids with the conversion of inner creases to ponds or cavities. The stochastic array of the resulted microstructures ensures the unclonability of the codes. Water‐responsive fluorescence emission is observed when a hydrosoluble dye is added to the microstructures, further enhancing the encryption safe level. Besides, the high stability of the PDMS matrix to ultraviolet irradiation and extreme temperature environment endows the material large application potentials in varied fields. This research provides a potential solution for facile, tough, and fundamentally safe information encryption. Abstract : A multiliquid adaptive elastomer with 3D‐printed convertible microstructures is fabricated for facile, tough, and fundamentally safe information encryption. The encryption pattern has optical response to liquids exposure, along with naked eye identification in macrolevel and complete unclonability in microlevel. The samples show high stability to both UV and extreme temperatures.