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Fractured diamond can heal itself at room temperature

Self-healing behaviour in a nanotwinned diamond composite, at room temperature, has been quantitatively evaluated through tensile testing. The phenomenon is shown to arise from a transition of atomic interactions from repulsion to attraction and the formation of nanoscale diamond ‘osteoblasts’, in analogy to the process of bone healing in living organisms.

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Fig. 1: Self-healing in ntDC nanobeams.


  1. Huang, Q. et al. Nanotwinned diamond with unprecedented hardness and stability. Nature 510, 250–253 (2014). This paper reports that nanotwinned diamond with an average twin thickness of approximately 5 nm has unprecedented hardness (approximately 200 GPa) and thermal stability.

    Article  CAS  Google Scholar 

  2. Yue, Y. et al. Hierarchically structured diamond composite with exceptional toughness. Nature 582, 370–374 (2020). This paper presents our previous results on hierarchically structured ntDC.

    Article  CAS  Google Scholar 

  3. Field, J. E. & Freeman, C. J. Strength and fracture properties of diamond. Philos. Mag. A 43, 595–618 (1981). A review article covering the strength, fracture and frictional properties of diamond.

    Article  CAS  Google Scholar 

  4. Li, F. et al. Dual-phase super-strong and elastic ceramic. ACS Nano 13, 4191–4198 (2019). This paper provides details of the in situ tensile test equipment we used here for scanning electron microscopy.

    Article  CAS  Google Scholar 

  5. Hu, K. & Olsen, B. R. Osteoblast-derived VEGF regulates osteoblast differentiation and bone formation during bone repair. J. Clin. Invest. 126, 509–526 (2016). This paper reports on the function of osteoblast-derived vascular endothelial growth factor (VEGF) in healing a bone defect.

    Article  Google Scholar 

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This is a summary of: Qiu, K. et al. Self-healing of fractured diamond. Nat. Mater. (2023).

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Fractured diamond can heal itself at room temperature. Nat. Mater. 22, 1292–1293 (2023).

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