CORE-Facility Shop

At the core-facility SUSDIAM many operations of synthesis and/or processing of diamond in various forms (thin layers, suspensions, powders) are performed. The production line at the Gdańsk University of Technology enables the following processes:

• Deposition of thin electrode layers of micro- and nanocrystalline diamond doped with boron and/or nitrogen on a number of substrates (silicon, glassy carbon, titanium, quartz glass) for optoelectronic, sensory and electrochemical applications. Such electrodes are suitable for subsequent modification enabling selective sensing of a desired substance. The electrodes have already proven useful as detectors of toxins, DNA, proteins, viruses, and more.
• Preparation of suspensions of nanodiamonds. The team at the Gdańsk University of Technology specializes in creating suspensions of various nanodiamonds:
  
  • detonation nanodiamonds without color centers: size range 5-50 nm; mean size 5 nm;
  • high-pressure, high-temperature (HPHT) nanodiamonds: size range 50-1000 nm;
  • conductive CVD nanodiamond powders doped by boron;
  • deagglomerated HPHTor CVD nanodiamonds with nitrogen-vacancy-nitrogen centers: size range 300 nm – 1400 nm;
  • Surface termination of the nanodiamonds may be controlled (oxidized, hydrogenated, carboxylated, graphitized) depending on the pre-processing performed. The range of solvents used as dispersion media includes, but is not limited to: deionized water, dimethyl sulfoxide (DMSO), isopropanol, toluene, ethanol. The concentration of the particles in the suspensions may be tuned from 100 ppm to single percents.
• Optical characterization of nanodiamond suspensions (fluorescence, particle size distributions, zeta potentia