Robust, directed assembly of fluorescent nanodiamonds
  Arrays of fluorescent nanoparticles are highly sought after for applications in sensing and nanophotonics. Here we present a simple and robust method of assembling fluorescent nanodiamonds into macroscopic arrays. Remarkably, the yield of this directed assembly process is greater than 90% and the assembled patterns withstand ultra-sonication for more than three hours. The assembly process is based on covalent bonding of carboxyl to amine functional carbon seeds and is applicable to any material, and to non-planar surfaces. Our results pave the way to directed assembly of sensing and nanophotonics devices. 
Mehran Kianinia, Andreas W. Schell, Olga Shimoni, Steven J. Randolph,   Milos Toth, Igor Aharonovich and Charlene J. Lobo
physics.optics