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Quasi-3-D Au mushrooms with programmable morphology for high-capacity flexible plasmonic encoding

具有可编程形态的准三维金纳米蘑菇用于制备高容量柔性等离激元编码

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Abstract

Plasmonic encoding composed of metallic nanostructures makes a great contribution to the practical application of information encryption. However, most reports have so far shown the preparation of single or binary plasmonic encoding patterns because of the technical difficulty of assembling multiplex nanostructures on a single platform, which cannot satisfy the requirements of high encoding capacity for increasing information security. Herein, we developed a strategy based on plasma etching combined with in-situ growth to fabricate patterned arrays of quasi-three-dimensional (3-D) plasmonic Au nano-mushrooms with controlled morphologies, and successfully realized ideal high-capacity plasmonic encoding by arranging Au nano-mushrooms on one platform. On this basis, such multiplex encoding patterns have been transferred to the flexible substrate to realize the triple-mode encryption of the Morse code of “FUNSOM”, indicating great prospects in the applications of information encryption and data storage.

摘要

由金属纳米结构组成的等离激元编码在信息加密的实际应用中做出了巨大贡献. 然而, 由于在单一平台上排列集成水平较高的多元纳米结构的技术难度较大, 目前大多数报道只展示了单一或二元等离激元编码的制备, 这无法满足日益提高的信息安全性对于高编码容量的要求. 在此, 我们开发了一种基于等离子体刻蚀-生长的策略, 制备了具有可控形态的准三维等离激元金纳米蘑菇的图案阵列, 并通过将这些纳米蘑菇排列在一个基底上, 成功实现了理想的高容量等离激元编码. 在此基础上, 将这种多元编码转移到柔性基板上, 实现了对代表“FUNSOM”的摩斯密码的三模态加密, 展示了开发的等离激元编码在信息加密和数据存储等领域的广阔应用前景.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (21822202, 22072104), the National Key R&D Program of China (International Collaboration program) granted by Chinese Ministry of Science and Technology (2018YFE0200700). This is also a project funded by Suzhou Key Laboratory of Functional Nano & Soft Materials, Collaborative Innovation Center of Suzhou Nano Science & Technology, the 111 Project, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices.

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Author notes

  1. These authors contributed equally to this work.

Authors and Affiliations

  1. Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Soochow University, Suzhou, 215123, China

    Dong Li  (李东), Yawen Wang  (王雅雯), Bo Zhao  (赵博), Wenkai Liang  (梁文凯), Yuanlan Liu  (刘远兰), Heng Gao  (高恒) & Lin Jiang  (江林)

  2. College of Energy, Soochow Institute for Energy and Materials Innovations and Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou, 215006, China

    Yinghui Sun  (孙迎辉), Yaqi Ye  (叶雅奇) & Jiating Li  (李嘉婷)

Authors
  1. Dong Li  (李东)
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  2. Yinghui Sun  (孙迎辉)
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  4. Bo Zhao  (赵博)
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  10. Lin Jiang  (江林)
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Contributions

Author contributions Li D and Jiang L designed and engineered the samples; Li D, Liang W, Liu Y, Gao H, Ye Y and Li J performed the experiments; Zhao B provided the schematics; Li D wrote the paper with support from Sun Y, Wang Y, and Jiang L. All authors contributed to the general discussion.

Corresponding author

Correspondence to Lin Jiang  (江林).

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Conflict of interest The authors declare that they have no conflict of interest.

Additional information

Supplementary information Experimental details and supporting data are available in the online version of the paper.

Dong Li is currently a doctor candidate under the supervision of Prof. Lin Jiang at Soochow University. His current research interests focus on the preparation and application of plasmonic nanostructures.

Yinghui Sun is currently a professor at Soochow University. He earned his PhD degree in organic chemistry from Jilin University, and completed postdoctoral research at Muenster University and Nanyang Technological University. His research focuses on the development of advanced functional nanomaterials for energy conversion.

Yawen Wang is currently a laboratory technician in Prof. Lin Jiang’s group. Her research interests include the synthesis, fabrication, and application of plasmonic metal nanostructures.

Lin Jiang is currently a professor at Soochow University. She received her doctorate from Jilin University in 2005, and became a professor at Soochow University in 2012. Her research interests include controllable assembly, property regulation, and application exploration of functional nanomaterials.

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Li, D., Sun, Y., Wang, Y. et al. Quasi-3-D Au mushrooms with programmable morphology for high-capacity flexible plasmonic encoding. Sci. China Mater. 65, 2227–2234 (2022). https://doi.org/10.1007/s40843-022-2090-1

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  • DOI: https://doi.org/10.1007/s40843-022-2090-1

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