Wang Zhenzhi, Meng Fantao, Kong Miao, Guo Xiaoyu, Zhang Shufen, Zhang Yuang, Tang Bingtao
State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116024, P. R. China.
Small. 2024 Jan;20(3):e2305825. doi: 10.1002/smll.202305825. Epub 2023 Sep 12.
Information security has become a major global problem in recent years. Thus, people continue to exert much effort in developing new information security technologies based on encryption and storage. In this study, a 2D information security technology based on polyurethane optical devices with inverse photonic glass structure (PU-IPG) is introduced. Based on 1) the swelling and plasticizing effects of various solvents on PU-IPG and 2) the capillary force that can produce geometric deformation on micro/nanostructures when solvents evaporate, a 2D information security system with two modules of decryption (structural color information display) and anticounterfeiting (structural color transformation) is successfully constructed. The spraying method adopted can be simple and fast and can provide a large area to build photonic glass templates, which greatly improves the capacity and category of information in the encryption system. The prepared PU-IPG optical devices can produce large-area multicolor output capability of information. These devices also have excellent mechanical properties, strong cycle stability, environmental friendliness, and low price. Therefore, the preparation strategy has great reference value and application prospects in the field of information security.
近年来，信息安全已成为一个重大的全球性问题。因此，人们继续在基于加密和存储开发新的信息安全技术方面付出巨大努力。在本研究中，介绍了一种基于具有反光子玻璃结构的聚氨酯光学器件（PU-IPG）的二维信息安全技术。基于1）各种溶剂对PU-IPG的溶胀和增塑作用以及2）溶剂蒸发时可在微/纳米结构上产生几何变形的毛细力，成功构建了一个具有解密（结构颜色信息显示）和防伪（结构颜色转变）两个模块的二维信息安全系统。所采用的喷涂方法简单快速，可为构建光子玻璃模板提供大面积，极大地提高了加密系统中信息的容量和种类。制备的PU-IPG光学器件可产生大面积的多色信息输出能力。这些器件还具有优异的机械性能、强大的循环稳定性、环境友好性和低价格。因此，该制备策略在信息安全领域具有很大的参考价值和应用前景。
