Robust, Portable, and Specific Water-Response Silk Film with Noniridescent Pattern Encryption for Information Security
- 3 December 2020
- journal article
- research article
- Published by American Chemical Society (ACS) in ACS Applied Materials & Interfaces
- Vol. 12 (50), 56413-56423
- https://doi.org/10.1021/acsami.0c15859
Abstract
In modern days, information is a key resource for accelerating the development of society, economy, and culture. Thus, information security has always been a high priority for any country, business, and department. Herein, a simple and effective strategy for preparing an independent optical device for information security is proposed by using silk fibroin materials with a quasiamorphous inverse structure. Given the reversible hydrogen bonds between silk fibroin materials and water molecules, a multicolor high-resolution pattern with a variable color can be obtained by using a simple spray coating method. Furthermore, a reversible water stimulus–response silk film with a laminated structure that consists of hidden and patterned layers and carries quick response (QR) code information is prepared. This device effectively hides (encryption) the QR code pattern in a normal environment and quickly displays the information (decryption) in water. Simultaneously, the silk film shows good mechanical strength, excellent biocompatibility, long-term structural stability, and a unique response mechanism, which make it a suitable carrier of optical information. Thus, this new preparation strategy of an optical device has a potential application value and is an important reference in the fields of information security and functional materials.Funding Information
- Ministry of Education of the People's Republic of China (DUT18ZD218, IRT_13R06)
- National Natural Science Foundation of China (21421005, 21576039, 21878043, U1608223)
- Shandong?Collaborative?Innovation?Center?of?Eco-Chemical?Engineering, Qingdao University of Science and Technology (XTCXYX04)
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