Researchers may have spotted an elusive 'superhard' material between the layers of an atomic-scale sandwich, Philip Ball reports.
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References
Wu,M. L. et al. Formation of carbon nitride with sp3-bonded carbon in CNx/ZrN superlattice coatings. Applied Physics Letters 76 2692 - 2694 2000.
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Ball, P. Crunchy filling. Nature (2000). https://doi.org/10.1038/news000511-1
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DOI: https://doi.org/10.1038/news000511-1