Henry Bland demonstrates virus filtration using nanodiamond particles
Cardiff Diamond Foundry demonstrates log6.2 (>99.9999%) removal of virus from water by modifying quartz filters with hydrogenated diamond nanoparticles. The approach is cheap and robust. We are currently assessing the efficacy of the same filter for air filtration of airborn aerosolised viruses.
Dr Cuenca measures and models wafer bow / stress in diamond / III-N membranes
Large tensile stresses in diamond III/V heterostructures are characterised by Raman spectroscopy and profilometry. The stress originates from large differences in thermal expansion coefficients and are modelled with COMSOL. Wafer bow is a key issue in the integration of diamond with III-V semiconductors and this work proposes methods to alleviate this,
Dr Klemencic explains anomalous transport behaviour in superconducting diamond with phase slips
The microstructure of boron doped superconducting nanodiamond leads to arrays of Josephson Junctions and one-dimensional like behaviour. Switching between superconducting states is demonstrated by application of electromagnetic pulses. See paper for details:
CDF awarded EPSRC “New Horizon” grant for high temperature devices fabricated from Ultra High Temperature Ceramics
CDF awarded Ser Cymru Tackling Covid19 funds for “Active Virus Filtration Membranes”
CDF developers new SiC interlayers for the growth of diamond on AlGaN with with University of Bristol, University of Glasgow and University of Cambridge.
Thin crystalline SiC inlayer provide enhanced adhesion and lower thermal barrier resistances between the diamond and AlGaN. See below paper for details:
Interview with BBC Wales “Science Café” on crystals and diamond growth, 18/6/20 18:30, also available on BBC Sounds as podcast.
“Diamond – not all that glitters is gold”, Pint of Science (filmed for BBC Wales & S4C) 16/5/18.
CDF Interview on Sky News about Lab gems, 3/5/18:
Quoted in article in Daily Mail 3/5/18
Quoted in article in Daily Express 3/5/18
Article on Wales online
CDF featured in Financial Times article on lab grown diamonds: “Spot the difference: why DIY diamonds pose a threat to big miners”
CDF work featured in Logitech eBook of case studies
Our diamond polishing work has been featured in Logitech’s eBook of customer case studies, read the full article here . More detail of our Chemical Mechanical Polishing process can be found here .
CDF interview in “Secret History of Jupiter”, Series 2, Episode 6 of “Space’s Deepest Secrets” (Science channel) and “Strip the Cosmos” (Discovery).
kSA MOS installed
We have taken delivery of a k-Space Associates MOS system. The MOS monitors the reflection of multiple parallel laser beams off the growth substrate to measure wafer curvature. We have installed this on our Carat systems CTS6U CVD reactor which allows us to monitor stress in-situ. This is a unique capability of Cardiff Diamond Foundry and can be combined with our Spectroscopic Ellipsometry.
Anton Paar SurPASS 3 aquired
We have installed an Electrokinetic analyser so we are now able to measure the streaming potential of almost any substrate. This allows us to optimise diamond nucleation on novel materials such as GaN as well as study surfaces in solution.
Carat systems CTS6U operational
Our Carat Systems CTS6U deposition system for high purity intrinsic diamond is finally operational. This system is an enhanced 6500 design with conflat sealed windows as well as differentially pumped main seals. It is capable of ppb level nitrogen levels.
Quantum Design PPMS installed
We have recently installed a new Physical Property Measurement System (PPMS) from Quantum design (Evercool II). Funded by our ERC consolidator grant. This system includes a 9T magnet with DC Magnetism, AC Susceptibility, Resistivity, Vibrating Sample Magnetometer etc. This extends our dilution refrigerator (BlueFors 7mK) capabilities for low temperature characterisation of our superconducting diamond. We also operate a unique high frequency VSM designed and built by Sean Giblin.
WASPS Poised to Bring Tunable Sources for Quantum Communications
The European Commission-funded Wavelength-tunable Advanced Single Photon Sources (WASPS) program aims to develop a new generation of triggered single-photon sources based on diamond defects coupled to novel optical resonators. The devices in development promise a range of high specifications including ambient-temperature operation, making them ideal for commercial and industrial settings. The three-year program (running from November 2013 to October 2016) involves a consortium of six European research groups.
The WASPS consortium comprises research groups at Oxford University, Bristol University and Cardiff University in the U.K.; Saarland University in Saarbrücken, Germany and Ludwig Maximilians University in Munich; and the National Center for Scientific Research (CNRS) in Grenoble, France. Construction and testing of the devices are being led by professor Jason Smith in Oxford, professor John Rarity in Bristol, professor Dr. Christoph Becher in Saarbrücken and Dr. David Hunger in Munich. Dr. Oliver Williams leads the Cardiff team, which synthesizes the defect-containing diamond materials by using chemical vapor deposition, and Dr. Alexia Auffèves at CNRS in Grenoble leads the theoretical treatment of the devices.
European Research Council awards Consolidator Grant to CDF
Oliver Williams, Principal Investigator of Cardiff Diamond Foundry has been awarded a Consolidator grant of €2.73M for the development of “Superconducting Diamond Quantum Nano-Electro-Mechanical Systems.
Coherent Anti-Stokes Raman Spectroscopy of Nanodiamond particles
A recent collaboration with Prof Langbein in Physics, Prof Borri’s group and collaborators within Cardiff Biosciences has lead to the development of Coherent Anti-Stokes Raman Spectroscopy of Nanodiamond particles. See here.
New “Nanodiamond” book published by RSC, edited by Oliver Williams
“The exceptional mechanical, optical, surface and biocompatibility properties of nanodiamond have gained it much interest. Exhibiting the outstanding bulk properties of diamond at the nanoscale in the form of a film or small particle makes it an inexpensive alternative for many applications.
Nanodiamond is the first comprehensive book on the subject. The book reviews the state of the art of nanodiamond films and particles covering the fundamentals of growth, purification and spectroscopy and some of its diverse applications such as MEMS, drug delivery and biomarkers and biosensing. Specific chapters include the theory of nanodiamond, diamond nucleation, low temperature growth, diamond nanowires, electrochemistry of nanodiamond, nanodiamond flexible implants, and cell labelling with nanodiamond particles.
Edited by a leading expert in nanodiamonds, this is the perfect resource for those new to, and active in, nanodiamond research and those interested in its applications.”