Stellenbosch University gets first X-ray microscopy scanner in Africa
X-ray computed tomography (CT), also called X-ray microscopy, is a non-destructive technique for visualising interior features within solid objects and for obtaining digital information on their 3-D geometries and properties. The first nanoCT scanner in Africa will be officially launched during a cocktail event on 15 September 2014 at Stellenbosch University's Central Analytical Facilities. [video]
This makes the X-ray computed tomography (CT) scanner facility at SU one of only a few facilities worldwide to have both micro and nanoCT capabilities at one facility.
The launch will be followed by a four-day workshop for postgraduate students on X-ray Cape Town, coupled with hands-on training in NIR spectroscopy and chemometric techniques. Two internationally renowned leaders in the field, Prof Pierre Dardenne and Prof Juan-Antonio Fernandez Pierna will lead the training sessions.
Dr Anton du Plessis, manager of the CT scanner facility at SU, says they are now able to analyse small samples, such as microchips or a maize kernel, at a very high resolution (500 nanometres), thereby enabling scientists and engineers to visualise the inner structure of an intact object.
"The nanoCT scanner is an emerging technology that is set to grow exponentially in the next few years, as industry and scientists realise the possibilities it offers and as computers and software improve to analyse the huge data sets.
"In Europe and the US it is already standard practice for high value manufacturing factories to check parts with this technology. Within the hour, it can give you a full porosity size distribution visual and data information from a sample, telling you if the part is good or not. Some mining companies are using it to investigate ore bodies in 3D to better analyse their deposits in 3D slice images.
"We are of course very excited to be in a position to offer this type of high-end testing and thereby supporting local research and industry."
Scientific speakers
During the event, scientists from various fields - from food sciences to ancient studies - will provide a brief overview of what they will be able to achieve with the new technology.
Prof Marena Manley, a food scientist at Stellenbosch University, says that without direct access to this kind of analytical equipment, food scientists in Africa have become 'sample collectors' for the West. "This equipment will ensure that highly complex and high resolution submicron CT analyses will now be done by African scientists in Africa, building capacity and enhancing our international research stature."
The other speakers are Dr Jodie Miller (geosciences), Dr Kris Carlson (archaeology), Prof Owe Lindgren (wood science) and Dr Ruhan Slabbert (ancient studies).
The nanoCT scanner was acquired through the National Research Foundation's National Equipment Programme. For more information, go to www.sun.ac.za/ctscanner.
