Multidimensional Encryption by Chip-Integrated Metasurfaces

IF 15.8 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY
ACS Nano Pub Date : 2024-07-03 DOI:10.1021/acsnano.4c05724
Shuai Wan, Kening Qu, Yangyang Shi, Zhe Li, Zejing Wang, Chenjie Dai, Jiao Tang and Zhongyang Li*, 
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Abstract

Facing the challenge of information security in the current era of information technology, optical encryption based on metasurfaces presents a promising solution to this issue. However, most metasurface-based encryption techniques rely on limited decoding keys and struggle to achieve multidimensional complex encryption. It hinders the progress of optical storage capacity and puts encryption security at a disclosing risk. Here, we propose and experimentally demonstrate a multidimensional encryption system based on chip-integrated metasurfaces that successfully incorporates the simultaneous manipulation of three-dimensional optical parameters, including wavelength, direction, and polarization. Hence, up to eight-channel augmented reality (AR) holograms are concealed by near- and far-field fused encryption, which can only be extracted by correctly providing the three-dimensional decoding keys and then vividly exhibit to the authorizer with low crosstalk, high definition, and no zero-order speckle noise. We envision that the miniature chip-integrated metasurface strategy for multidimensional encryption functionalities promises a feasible route toward the encryption capacity and information security enhancement of the anticounterfeiting performance and optically cryptographic storage.

Abstract Image

Abstract Image

芯片集成元表面的多维加密。
面对当今信息技术时代的信息安全挑战,基于元表面的光加密技术为这一问题提供了一种前景广阔的解决方案。然而,大多数基于元表面的加密技术依赖于有限的解码密钥,难以实现多维复杂加密。这阻碍了光存储容量的进步,并使加密安全面临泄露风险。在这里,我们提出并通过实验演示了一种基于芯片集成元表面的多维加密系统,该系统成功地将三维光学参数(包括波长、方向和偏振)的同步操作结合在一起。因此,通过近场和远场融合加密,最多可隐藏八通道增强现实(AR)全息图,只有正确提供三维解码密钥才能提取全息图,然后以低串扰、高清晰度和无零阶斑点噪声的方式生动地展示给授权者。我们认为,多维加密功能的微型芯片集成元表面策略有望为提高加密能力和信息安全提供一条可行的防伪性能和光密码存储的途径。
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来源期刊
ACS Nano
ACS Nano 工程技术-材料科学:综合
CiteScore
26.00
自引率
4.10%
发文量
1627
审稿时长
1.7 months
期刊介绍: ACS Nano, published monthly, serves as an international forum for comprehensive articles on nanoscience and nanotechnology research at the intersections of chemistry, biology, materials science, physics, and engineering. The journal fosters communication among scientists in these communities, facilitating collaboration, new research opportunities, and advancements through discoveries. ACS Nano covers synthesis, assembly, characterization, theory, and simulation of nanostructures, nanobiotechnology, nanofabrication, methods and tools for nanoscience and nanotechnology, and self- and directed-assembly. Alongside original research articles, it offers thorough reviews, perspectives on cutting-edge research, and discussions envisioning the future of nanoscience and nanotechnology.
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