Fluorescence and spin properties of defects in single digit nanodiamonds. Academic Article uri icon


  • This article reports stable photoluminescence and high-contrast optically detected electron spin resonance (ODESR) from single nitrogen-vacancy (NV) defect centers created within ultrasmall, disperse nanodiamonds of radius less than 4 nm. Unexpectedly, the efficiency for the production of NV fluorescent defects by electron irradiation is found to be independent of the size of the nanocrystals. Fluorescence lifetime imaging shows lifetimes with a mean value of around 17 ns, only slightly longer than the bulk value of the defects. After proper surface cleaning, the dephasing times of the electron spin resonance in the nanocrystals approach values of some microseconds, which is typical for the type Ib diamond from which the nanoparticle is made. We conclude that despite the tiny size of these nanodiamonds the photoactive nitrogen-vacancy color centers retain their bulk properties to the benefit of numerous exciting potential applications in photonics, biomedical labeling, and imaging.

published proceedings

  • ACS Nano

altmetric score

  • 6

author list (cited authors)

  • Tisler, J., Balasubramanian, G., Naydenov, B., Kolesov, R., Grotz, B., Reuter, R., ... Wrachtrup, J.

citation count

  • 291

complete list of authors

  • Tisler, Julia||Balasubramanian, Gopalakrishnan||Naydenov, Boris||Kolesov, Roman||Grotz, Bernhard||Reuter, Rolf||Boudou, Jean-Paul||Curmi, Patrick A||Sennour, Mohamed||Thorel, Alain||Börsch, Michael||Aulenbacher, Kurt||Erdmann, Rainer||Hemmer, Philip R||Jelezko, Fedor||Wrachtrup, Jörg

publication date

  • July 2009