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Selective crack suppression during deformation in metal films on polymer substrates using electron beam irradiation

Author

Listed:
  • So-Yeon Lee

    (Seoul National University)

  • Kyung Ryoul Park

    (Seoul National University)

  • Sung-gyu Kang

    (Seoul National University)

  • Ji-Hoon Lee

    (Korea Institute of Materials Science (KIMS))

  • Eun-chae Jeon

    (University of Ulsan)

  • Cheol-Hwee Shim

    (Korea Institute of Science and Technology)

  • Jae-Pyoung Ahn

    (Korea Institute of Science and Technology)

  • Dong-Ik Kim

    (Korea Institute of Science and Technology)

  • Heung Nam Han

    (Seoul National University
    Seoul National University)

  • Young-Chang Joo

    (Seoul National University
    Seoul National University)

  • Changsoon Kim

    (Seoul National University)

  • In-Suk Choi

    (Seoul National University
    Seoul National University)

Abstract

While cracks are usually considered detrimental, crack generation can be harnessed for various applications, for example in ceramic materials, via directing crack propagation and crack opening. Here, we find that electron beam irradiation prompts a crack suppression phenomenon in a copper (Cu) thin film on a polyimide substrate, allowing for the control of crack formation in terms of both location and shape. Under tensile strain, cracks form on the unirradiated region of the Cu film whereas cracks are prevented on the irradiated region. We attribute this to the enhancement of the adhesion at the Cu–polyimide interface by electrons transmitted through the Cu film. Finally, we selectively form conductive regions in a Cu film on a polyimide substrate under tension and fabricate a strain-responsive organic light-emitting device.

Suggested Citation

  • So-Yeon Lee & Kyung Ryoul Park & Sung-gyu Kang & Ji-Hoon Lee & Eun-chae Jeon & Cheol-Hwee Shim & Jae-Pyoung Ahn & Dong-Ik Kim & Heung Nam Han & Young-Chang Joo & Changsoon Kim & In-Suk Choi, 2019. "Selective crack suppression during deformation in metal films on polymer substrates using electron beam irradiation," Nature Communications, Nature, vol. 10(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-12451-8
    DOI: 10.1038/s41467-019-12451-8
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    Cited by:

    1. Shiyuan Liu & Ying Hong & Wang Hong & Yi Zheng & Xiaodan Yang & Xuemu Li & Zhuomin Zhang & Xiaodong Yan & Yao Shan & Weikang Lin & Zehua Peng & Xingqi Zhang & Xi Yao & Zuankai Wang & Zhengbao Yang, 2024. "Stress-eliminated liquid-phase fabrication of colloidal films above the critical crack thickness," Nature Communications, Nature, vol. 15(1), pages 1-11, December.

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