The increasing significance of data security promotes the development of multilevel information encryption and decryption techniques. However, the realization of logical outputs modulated by multiple stimuli is challenging in the design of advanced functional materials. Herein, a multilevel information decryption system with a combination of visual and digital outputs that responds to dual-optical inputs is developed based on a hydrogel-based synaptic device. ammonium molybdate nanoparticles and calcium alginate supramolecular networks is incorporated into a polyacrylamide hydrogel to enable optically regulated color change and ionic conductivity. Under UV irradiation, the reduction of the nanoparticles allows the hydrogel to change color as visual outputs. Meanwhile, the ionic conductivity of the hydrogel can be modulated by near-infrared (NIR) optical pulses to emulate the synaptic plasticity of biological synapses, producing NIR-mediated digital outputs. As a demonstration, a multilevel decryption strategy is provided using a hydrogel array that combines digital information decoding with visual information camouflage. Moreover, the short-term plasticity of the hydrogel synapse endows the system with time-dependent decryption, which improves information security and reduces the risk of data leakage. This study contributes to advancing multilevel decryption systems by providing an effective technique for integrating digital and visual decryption in hydrogel materials.
Jianan Niu,Xue Bai,Jiangwen Wang,Yingyi Chen,Bingqi Zhao,Wei Sha,Yong Long,Zhonglin Wang,Weiguo Hu
Visualization is a cornerstone in human–computer interaction, evolving from large screens to mobile devices and now to wearable display technology. However, conventional batteries and displays lack the softness and stretchability inherent to human skin. Here, a fully flexible, all-in-one electronic display skin by integrating a flexible microLED display, a stretchable circuit, and a Zn|PAM|V 2 O 5 hydrogel battery pack is developed. Vapor-phase bulk transfer is used to efficiently and accurately transfer 10 000 microLEDs onto a flexible substrate, ensuring high flexibility and ultra-thin (240 µm). The flexible hydrogel battery pack provides sustainable energy, with a high specific capacity of 331.3 mAh g −1 . Additionally, a transparent stretchable circuit board (maximum stretch 40%) is made by 3D printing technology. The skin display exhibited exceptional stretchability and biocompatibility, conforming to movements while maintaining high-resolution dynamic visual outputs. These innovations pave the way for advanced skin-implanted displays, promising transformative applications in information interaction, healthcare, and artificial intelligence.
危险品化学品经营许可证（带存储）