Nature 421, 599–600, 2002
In the legend to Fig. 1a of this communication, the diameter of the transparent polycrystalline diamond shown is 1 mm, and not 0.1 mm as published; the scale divisions represent 0.1 mm. Also, the first full paragraph in the second column on page 600 should read: “Recent chemical-vapour deposition techniques provided pure polycrystalline diamonds, but these diamonds are not sintered and have poor intergrain adhesion. Accordingly, they have been reported to have a hardness of ∼80–100 GPa (ref. 10), which is significantly lower than the highest value (∼120 GPa; ref. 4) for single-crystal diamonds.”
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The online version of the original article can be found at 10.1038/421599b
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Irifune, T., Kurio, A., Sakamoto, S. et al. Correction: Ultrahard polycrystalline diamond from graphite. Nature 421, 806 (2003). https://doi.org/10.1038/421806b
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DOI: https://doi.org/10.1038/421806b
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