Diamond Nanophotonic Circuits Functionalized by Dip-pen Nanolithography
  Nanophotonic circuits based on polished diamond thin films are prepared. These circuits cover a wide wavelength range across the entire visible spectrum. Integrated devices are surface functionalized site-specifically and in parallel using dip-pen nanolithography with a minimum linewidth of 100 nm. Multicolor fluorescence is coupled into the underlying photonic network using microring resonators and grating structures. 
Patrik Rath, Michael Hirtz, Georgia Lewes-Malandrakis, Dietmar Brink,   Christoph Nebel, Wolfram H. P. Pernice
physics.optics