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3D printing colloidal crystal microstructures via sacrificial-scaffold-mediated two-photon lithography

Author

Listed:
  • Keliang Liu

    (Southeast University)

  • Haibo Ding

    (Southeast University)

  • Sen Li

    (Southeast University)

  • Yanfang Niu

    (Southeast University)

  • Yi Zeng

    (Southeast University)

  • Junning Zhang

    (Southeast University)

  • Xin Du

    (Southeast University)

  • Zhongze Gu

    (Southeast University)

Abstract

The orderly arrangement of nanomaterials’ tiny units at the nanometer-scale accounts for a substantial part of their remarkable properties. Maintaining this orderness and meanwhile endowing the nanomaterials with highly precise and free-designed 3D micro architectures will open an exciting prospect for various novel applications. In this paper, we developed a sacrificial-scaffold-mediated two-photon lithography (TPL) strategy that enables the fabrication of complex 3D colloidal crystal microstructures with orderly-arranged nanoparticles inside. We show that, with the help of a degradable hydrogel scaffold, the disturbance effect of the femtosecond laser to the nanoparticle self-assembling could be overcome. Therefore, hydrogel-state and solid-state colloidal crystal microstructures with diverse compositions, free-designed geometries and variable structural colors could be easily fabricated. This enables the possibility to create novel colloidal crystal microsensing systems that have not been achieved before.

Suggested Citation

  • Keliang Liu & Haibo Ding & Sen Li & Yanfang Niu & Yi Zeng & Junning Zhang & Xin Du & Zhongze Gu, 2022. "3D printing colloidal crystal microstructures via sacrificial-scaffold-mediated two-photon lithography," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-32317-w
    DOI: 10.1038/s41467-022-32317-w
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    References listed on IDEAS

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    1. Yejing Liu & Hao Wang & Jinfa Ho & Ryan C. Ng & Ray J. H. Ng & Valerian H. Hall-Chen & Eleen H. H. Koay & Zhaogang Dong & Hailong Liu & Cheng-Wei Qiu & Julia R. Greer & Joel K. W. Yang, 2019. "Structural color three-dimensional printing by shrinking photonic crystals," Nature Communications, Nature, vol. 10(1), pages 1-8, December.
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