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Geminate labels programmed by two-tone microdroplets combining structural and fluorescent color

Author

Listed:
  • Lang Qin

    (Fudan University)

  • Xiaojun Liu

    (Fudan University)

  • Kunyun He

    (Fudan University)

  • Guodong Yu

    (Fudan University)

  • Hang Yuan

    (Fudan University)

  • Ming Xu

    (Fudan University)

  • Fuyou Li

    (Fudan University)

  • Yanlei Yu

    (Fudan University)

Abstract

Creating a security label that carries entirely distinct information in reflective and fluorescent states would enhance anti-counterfeiting levels to deter counterfeits ranging from currencies to pharmaceuticals, but has proven extremely challenging. Efforts to tune the reflection color of luminescent materials by modifying inherent chemical structures remain outweighed by substantial trade-offs in fluorescence properties, and vice versa, which destroys the information integrity of labels in either reflection or fluorescent color. Here, a strategy is reported to design geminate labels by programming fluorescent cholesteric liquid crystal microdroplets (two-tone inks), where the luminescent material is ‘coated’ with the structural color from helical superstructures. These structurally defined microdroplets fabricated by a capillary microfluidic technique contribute to different but intact messages of both reflective and fluorescent patterns in the geminate labels. Such two-tone inks have enormous potential to provide a platform for encryption and protection of valuable authentic information in anti-counterfeiting technology.

Suggested Citation

  • Lang Qin & Xiaojun Liu & Kunyun He & Guodong Yu & Hang Yuan & Ming Xu & Fuyou Li & Yanlei Yu, 2021. "Geminate labels programmed by two-tone microdroplets combining structural and fluorescent color," Nature Communications, Nature, vol. 12(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-20908-y
    DOI: 10.1038/s41467-021-20908-y
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    Cited by:

    1. Shuang Tong & Jianhong Dai & Jiangman Sun & Yuanyuan Liu & Xiaoli Ma & Zhehong Liu & Teng Ma & Jiao Tan & Zhen Yao & Shanmin Wang & Haiyan Zheng & Kai Wang & Fang Hong & Xiaohui Yu & Chunxiao Gao & Xi, 2022. "Fluorescence-based monitoring of the pressure-induced aggregation microenvironment evolution for an AIEgen under multiple excitation channels," Nature Communications, Nature, vol. 13(1), pages 1-11, December.
    2. Hanwen Huang & Jiamiao Yin & Qianwen Zhou & Huateng Li & Junying Yang & Yaoben Wang & Ming Xu & Changchun Wang, 2024. "Firefly-inspired bipolar information indication system actuated by white light," Nature Communications, Nature, vol. 15(1), pages 1-10, December.

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