Skip to content
6CCVD Research

Not All Fluorescent Nanodiamonds Are Created Equal - A Comparative Study

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2019-01-28
JournalParticle & Particle Systems Characterization
AuthorsPhilipp Reineck, Leevan Fremiot Trindade, Jan HavlĆ­k, Jan Å tursa, Ashleigh H. Heffernan
InstitutionsThe University of Melbourne, Czech Academy of Sciences, Institute of Organic Chemistry and Biochemistry
Citations80

Abstract

Section titled ā€œAbstractā€

Abstract Fluorescent nanodiamonds (FNDs) are vital to many emerging nanotechnological applications, from bioimaging and sensing to quantum nanophotonics. Yet, understanding and engineering the properties of fluorescent defects in nanodiamonds remain challenging. The most comprehensive study to date is presented, of the optical and physical properties of five different nanodiamond samples, in which fluorescent nitrogenā€vacancy (NV) centers are created using different fabrication techniques. The FNDsā€™ fluorescence spectra, lifetime, and spin relaxation time ( T 1 ) are investigated via singleā€particle confocal fluorescence microscopy and in ensemble measurements in solution ( T 1 excepted). Particle sizes and shapes are determined using scanning electron microscopy and correlated with the optical results. Statistical tests are used to explore correlations between the properties of individual particles and also analyze average results to directly compare different fabrication techniques. Spectral unmixing is used to quantify the relative NV chargeā€state (NV āˆ’ and NV 0 ) contributions to the overall fluorescence. A strong variation is found and quantified in the properties of individual particles within all analyzed samples and significant differences between the different particle types. This study is an important contribution toward understanding the properties of NV centers in nanodiamonds. It motivates new approaches to the improved engineering of NVā€containing nanodiamonds for future applications.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
  1. 2017 - Nanodiamonds: Advanced Material Analysis, Properties and Applications

Reads Similar to This

Fast Switching NOā‚‚-Doped p-Channel Diamond MOSFETs Surface evolution and stability transition of silicon wafer subjected to nano-diamond grinding Optimization of optical spin readout of the nitrogen-vacancy center in diamond based on spin relaxation model