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27 May 2022 | Story Leonie Bolleurs | Photo Charl Devenish
Prof Tomas Vetrik
Prof Tomas Vetrik, Professor in the Department of Mathematics and Applied Mathematics, recently delivered his inaugural lecture on the UFS Bloemfontein Campus.

Prof Tomas Vetrik, Professor in the Department of Mathematics and Applied Mathematics at the University of the Free State (UFS), recently delivered his inaugural lecture on the Bloemfontein Campus.

His research area is graph theory, and he mainly focuses on the degree-diameter problem, graph indices, and metric dimension of graphs.

Research focus

According to Prof Vetrik, mathematics was always his favourite subject in school. He also excelled in maths at university and decided to enrol for a course on graph theory while working on his master’s degree. “I liked it, so I also chose topics from graph theory for my PhD thesis,” he says.

In 2014, at the age of 32, he was appointed Associate Professor at the UFS, after postdoctoral research at the University of KwaZulu-Natal and working at the University of Pretoria. An NRF-rated researcher, he has published close to 75 research papers, a third of that as a single author in some of the most well-known journals in his area. Moreover, he was also research supervisor of three PhD and three master’s students.

International collaborations

In the eight years since his appointment at the UFS, Prof Vetrik has made research visits to universities from 14 different countries that have invited him for research collaborations. 

“I am often overseas. I like working from different places. It is interesting to me, and it helps me to be productive,” says Prof Vetrik, explaining some of the inspiration behind his mathematical ideas.

In the next two years, he would like to study more general mathematical problems beyond his current research area.

He says he is addicted to his research. “It overshadows all my other interests.” 

On the rare occasion when he is not working on his research, Prof Vetrik states that he has to keep himself busy. Unable to relax and do nothing, he likes to do sports of some kind or to travel. 

“I am a simple person. I do not even have a TV at home. I use an old-fashioned mobile phone that cannot access the internet,” he says.


News Archive

Chemistry research group receives international recognition
2016-10-28

Description: Chemistry research group  Tags: Chemistry research group

Dr Carla Pretorius mounts microcrystals with
Dumisani Kama while Pennie Mokolokolo
observe the technique.
Photo: Supplied


Crystals and crystallography form an integrated part of our daily lives, from bones and teeth, to medicines and viruses, new catalysts, jewellery, colour pigments, chocolates, analysing rocks on the moon and Mars, electronics, batteries, metal blades in airplane turbines, panels for solar energy and many more.

In spite of this, not many people know much about X-ray crystallography, although it is probably one of the greatest innovations of the 20th century, spanning the sciences. That is why this discipline is actively researched by a number of tertiary institutions around the globe as well as the Inorganic Chemistry Group of the Department of Chemistry at the University of the Free State (UFS).

Research by the Inorganic Chemistry Group includes:
•    clever design of model medicines to better detect cancer and study heart, bone and brain defects;
•    production of new compounds for making new and better automobile fuels and decrease carbon dioxide in the atmosphere;
•    generation and purification of new South African mineral resources for metals widely used in turbines which use wind energy.

A group of UFS students have received acknowledgement for their research at six international venues in the past few months.

Posters in Cameroon
Twelve postgraduate students, together with Prof André Roodt, Head of the Inorganic Chemistry division at the UFS, delivered three oral presentations, nine posters, one plenary and one keynote lecture abroad.

Four UFS students - Nina Morogoa, Pheello Nkoe, Alebel Bilay, and Mohammed Elmakki - who delivered posters at the First Pan African Conference on Crystallography in Dschang, Cameroon, received prizes for their presentations.

School and conference in Croatia

Students Orbett Alexander and Dumisani Kama were selected to attend the intense and demanding Third European Crystallographic School in Bôl, Croatia. Both Kama, Alexander and Prof Roodt gave oral presentations at the 24th Croatian-Slovenian Crystallographic Meeting at Brac Island, Croatia.

Kama, together with Dr Ferdi Groenewald, Dr Carla Pretorius and Pennie Mokolokolo, also attended the European Synchrotron Radiation Facility (ESRF) in Grenoble, France. The ESRF is a centre of excellence for fundamental and innovation-driven research. The storage ring at this laser facility can generate X-rays 100 billion times brighter than typical medical and laboratory X-ray sources.

Research in Switzerland

Kama and Mokolokolo also spent one month on research visits at the University of Zurich in Switzerland. Both Kama and Alexander were invited to present their research orally to the Institute of Inorganic Chemistry in Zurich, headed by Prof Roger Alberto.

In Basel, Switzerland, Dr Ferdi Groenewald, Dr Renier Koen, and Dr Truidie Venter all presented their research at the 30th European Crystallographic Meeting.

Prof Roodt said: “It is incredibly important that our postgraduate students get the chance to interact, discuss, and be taught by the best in the world and realise that hard work on basic and applied chemistry processes leads to broader recognition. The delegates to these international venues came from more than 60 countries and took note of our students work. With these young researchers, our future at the UFS and at Inorganic Chemistry is in good hands”.

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