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Feng, Dengchong; Guo, Qi; Huang, Zhenjie; Zhou, Baiyang; Gong, Li; Lu, Shaolin; Yang, Yuzhao; Yu, Dingshan; Zheng, Zhikun; Chen, Xudong
Advanced materials (Weinheim), 06/2024, Letnik: 36, Številka: 23Journal Article
As counterfeit techniques continue to evolve, ensuring the security of conventional “static” encryption methods becomes increasingly challenging. Here, the viscoelasticity‐controlled relaxation is introduced for the first time in a bilayer wrinkling system by regulating the density of hydrogen bond networks in polymer to construct a “dynamic” encryption material. The wrinkling surface can manipulate light during the dynamic relaxation process, exhibiting three stages with frosted glass, structural color, and mirror reflection. By regulating the viscoelasticity of skin layer through UV irradiation, the wavelength and the relaxation rate of the wrinkles can be controlled. As a result, dynamic wrinkling anti‐counterfeiting patterns and time‐resolved multistage information encryption are achieved. Crucially, the encryption material is developed as an anti‐counterfeiting label for packing boxes in daily applications, allowing the encrypted information to be activated manually and identified by naked eyes, surpassing the existing time‐resolved encryption materials in utilization potential. Besides, the dynamic hydrogen bond networks are extended to various dynamic interaction networks, demonstrating the versatility of the dynamic encryption strategy. This work not only provides an additional dimension for dynamic information encryption in daily practical use, but also offers theoretical guidance for the development of advanced optical anti‐counterfeiting and smart display materials in the future. This study reports a “dynamic” wrinkling system with controllable polymer interaction networks. By regulating the viscoelasticity of polymer interaction networks, the wavelength and the relaxation rate of the wrinkles can be controlled. Consequently, dynamic wrinkling anti‐counterfeiting patterns and time‐resolved multistage information encryption are achieved, which can be further utilized to develop a practical encryption label.
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Dostop do baze podatkov JCR je dovoljen samo uporabnikom iz Slovenije. Vaš trenutni IP-naslov ni na seznamu dovoljenih za dostop, zato je potrebna avtentikacija z ustreznim računom AAI.
Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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