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Five-Nanometer Diamond with Luminescent Nitrogen-Vacancy Defect Centers


  • We would like to thank Prof. John Drennan, Prof. G. Hanson, and Dr. M. Ridgway for facilities and assistance, and Dr. H. C. Chang for valuable discussions. Financial support was provided by the FABLS network, UQ Enabling grant, and ARC grant DP0771676.


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Colored diamonds: Despite concerns that photostable luminescent nitrogen-vacancy (NV) centers do not exist in 5-nm diamonds, time-resolved luminescence experiments on weakly bound clusters of such diamonds show that NV centers can be embedded (see picture). The efficiency of NV formation scales as the fifth power of the crystal radius.