Fluorescence and spin properties of defects in single digit nanodiamonds

  • Tisler J
  • Balasubramanian G
  • Naydenov B
 et al. 
  • 263


    Mendeley users who have this article in their library.
  • 196


    Citations of this article.


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.

Author-supplied keywords

  • Confocal fluorescence microscopy
  • Defects in diamond
  • Electron spin resonance
  • Fluorescence lifetime imaging
  • Fluorescent nanoparticle
  • Single molecule spectroscopy
  • Single spin manipulation

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document


Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free