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Designed wrinkles for optical encryption and flexible integrated circuit carrier board

Author

Listed:
  • Shilong Zhong

    (Guangdong University of Technology
    Jieyang Branch of Chemistry and Chemical Engineering Guangdong Laboratory
    Sun Yat-sen University)

  • Zhaoxiang Zhu

    (Sun Yat-sen University)

  • Qizheng Huo

    (Unit 66018 of the People’s Liberation Army)

  • Yubo Long

    (Sun Yat-sen University)

  • Li Gong

    (Sun Yat-sen University)

  • Zetong Ma

    (Guangdong University of Technology
    Jieyang Branch of Chemistry and Chemical Engineering Guangdong Laboratory)

  • Dingshan Yu

    (Sun Yat-sen University)

  • Yi Zhang

    (Sun Yat-sen University)

  • Weien Liang

    (Guangdong University of Technology)

  • Wei Liu

    (Sun Yat-sen University)

  • Cheng Wang

    (Guangdong University of Technology
    Jieyang Branch of Chemistry and Chemical Engineering Guangdong Laboratory)

  • Zhongke Yuan

    (Guangdong University of Technology)

  • Yuzhao Yang

    (Guangdong University of Technology)

  • Shaolin Lu

    (Guangdong University of Technology)

  • Yujie Chen

    (Sun Yat-sen University)

  • Zhikun Zheng

    (Guangdong University of Technology
    Jieyang Branch of Chemistry and Chemical Engineering Guangdong Laboratory
    Sun Yat-sen University)

  • Xudong Chen

    (Guangdong University of Technology
    Jieyang Branch of Chemistry and Chemical Engineering Guangdong Laboratory
    Sun Yat-sen University)

Abstract

Patterns on polymers usually have different mechanical properties as those of the substrates, causing deformation or distortion and even detachment of the patterns from the polymer substrates. Herein, we present a wrinkling strategy, which utilizes photolithography to define the area of stress distribution by light-induced physical crosslinking of polymers and controls diffusion of residual solvent to redistribute the stress and then offers the same material for patterns as substrate by thermal polymerization, providing uniform wrinkles without worrying about force relaxation. The strategy allows the recording and hiding of up to eight switchable images in one place that can be read by the naked eye without crosstalk, applying the wrinkled polymer for optical anti-counterfeiting. The wrinkled polyimide film was also utilized to act as a substrate for the creation of fine copper circuit by a full-additive process. It generates flexible integrated circuit (IC) carrier board with copper wire density of 400% higher than that of the state-of-the-art in industry while fulfilling the standards for industrialization.

Suggested Citation

  • Shilong Zhong & Zhaoxiang Zhu & Qizheng Huo & Yubo Long & Li Gong & Zetong Ma & Dingshan Yu & Yi Zhang & Weien Liang & Wei Liu & Cheng Wang & Zhongke Yuan & Yuzhao Yang & Shaolin Lu & Yujie Chen & Zhi, 2024. "Designed wrinkles for optical encryption and flexible integrated circuit carrier board," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
  • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-50069-7
    DOI: 10.1038/s41467-024-50069-7
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    References listed on IDEAS

    as
    1. Ned Bowden & Scott Brittain & Anthony G. Evans & John W. Hutchinson & George M. Whitesides, 1998. "Spontaneous formation of ordered structures in thin films of metals supported on an elastomeric polymer," Nature, Nature, vol. 393(6681), pages 146-149, May.
    2. Tianjiao Ma & Tiantian Li & Liangwei Zhou & Xiaodong Ma & Jie Yin & Xuesong Jiang, 2020. "Dynamic wrinkling pattern exhibiting tunable fluorescence for anticounterfeiting applications," Nature Communications, Nature, vol. 11(1), pages 1-8, December.
    3. Subramanian Sundaram & Petr Kellnhofer & Yunzhu Li & Jun-Yan Zhu & Antonio Torralba & Wojciech Matusik, 2019. "Learning the signatures of the human grasp using a scalable tactile glove," Nature, Nature, vol. 569(7758), pages 698-702, May.
    4. Jie Yin & Mary C. Boyce, 2015. "Unique wrinkles as identity tags," Nature, Nature, vol. 520(7546), pages 164-165, April.
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