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A seamless auxetic substrate with a negative Poisson’s ratio of −1

Author

Listed:
  • Yung Lee

    (KAIST
    KAIST)

  • Bongkyun Jang

    (Yuseong-gu)

  • Hyunggwi Song

    (KAIST
    KAIST)

  • Sumin Kim

    (KAIST
    Yonsei University)

  • Yong Won Kwon

    (KAIST
    Yonsei University)

  • Hyun Seok Kang

    (KAIST
    KAIST)

  • Min Seong Kim

    (KAIST)

  • Inkyu Park

    (KAIST)

  • Taek-Soo Kim

    (KAIST
    KAIST)

  • Junho Jang

    (KAIST
    KAIST)

  • Jae-Hyun Kim

    (Yuseong-gu)

  • Jang-Ung Park

    (KAIST
    Yonsei University
    Yonsei University College of Medicine)

  • Byeong-Soo Bae

    (KAIST
    KAIST)

Abstract

Auxetic metamaterials are a unique class of materials or structures with a negative Poisson’s ratio and a wide array of functionalities. However, their inherent porosity presents challenges in practical applications. Filling the inherent perforations while preserving their unique auxeticity is difficult because it demands the seamless integration of components that have highly distinct mechanical characteristics. Here we introduce a seamless auxetic substrate film capable of achieving a negative Poisson’s ratio of −1, the theoretical limit of isotropic materials. This breakthrough is realized by incorporating a highly rigid auxetic structure reinforced by glass-fabric, with surface-flattening soft elastomers. We effectively optimize the mechanical properties of these components by systematic experimental and theoretical investigations into the effects of relative differences in the moduli of the constituents. Using the developed auxetic film we demonstrate an image distortion-free display having 25 PPI resolution of micro-LEDs that is capable of 25% stretching without performance degradation.

Suggested Citation

  • Yung Lee & Bongkyun Jang & Hyunggwi Song & Sumin Kim & Yong Won Kwon & Hyun Seok Kang & Min Seong Kim & Inkyu Park & Taek-Soo Kim & Junho Jang & Jae-Hyun Kim & Jang-Ung Park & Byeong-Soo Bae, 2024. "A seamless auxetic substrate with a negative Poisson’s ratio of −1," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-51516-1
    DOI: 10.1038/s41467-024-51516-1
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    References listed on IDEAS

    as
    1. Yuta Suzuki & Giovanni Cardone & David Restrepo & Pablo D. Zavattieri & Timothy S. Baker & F. Akif Tezcan, 2016. "Self-assembly of coherently dynamic, auxetic, two-dimensional protein crystals," Nature, Nature, vol. 533(7603), pages 369-373, May.
    2. Dae Keun Choi & Dong Hyun Kim & Chang Min Lee & Hassan Hafeez & Subrata Sarker & Jun Su Yang & Hyung Ju Chae & Geon-Woo Jeong & Dong Hyun Choi & Tae Wook Kim & Seunghyup Yoo & Jinouk Song & Boo Soo Ma, 2021. "Author Correction: Highly efficient, heat dissipating, stretchable organic light-emitting diodes based on a MoO3/Au/MoO3 electrode with encapsulation," Nature Communications, Nature, vol. 12(1), pages 1-1, December.
    3. Da Yin & Jing Feng & Rui Ma & Yue-Feng Liu & Yong-Lai Zhang & Xu-Lin Zhang & Yan-Gang Bi & Qi-Dai Chen & Hong-Bo Sun, 2016. "Efficient and mechanically robust stretchable organic light-emitting devices by a laser-programmable buckling process," Nature Communications, Nature, vol. 7(1), pages 1-7, September.
    4. Dae Keun Choi & Dong Hyun Kim & Chang Min Lee & Hassan Hafeez & Subrata Sarker & Jun Su Yang & Hyung Ju Chae & Geon-Woo Jeong & Dong Hyun Choi & Tae Wook Kim & Seunghyup Yoo & Jinouk Song & Boo Soo Ma, 2021. "Highly efficient, heat dissipating, stretchable organic light-emitting diodes based on a MoO3/Au/MoO3 electrode with encapsulation," Nature Communications, Nature, vol. 12(1), pages 1-11, December.
    5. Kyung-In Jang & Sang Youn Han & Sheng Xu & Kyle E. Mathewson & Yihui Zhang & Jae-Woong Jeong & Gwang-Tae Kim & R Chad Webb & Jung Woo Lee & Thomas J. Dawidczyk & Rak Hwan Kim & Young Min Song & Woon-H, 2014. "Rugged and breathable forms of stretchable electronics with adherent composite substrates for transcutaneous monitoring," Nature Communications, Nature, vol. 5(1), pages 1-10, December.
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