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Learners from UFS Creative Clubs Programme shine at Bloemfontein Science Expo

16 August 2023 | Story Angela Stott | Photo Supplied

Participants of the UFS Creative Clubs Programme — 23 grade 10 participants in the UFS Creative Clubs Programme proudly pose with their awards.

All 23 grade 10 learners taking part in the University of the Free State’s (UFS) Creative Clubs Programme were awarded medals at the Bloemfontein regional Eskom Expo for Young Scientists (EYS) competition from 3 to 5 August 2023.

The learners, who attend Bloemfontein township schools, had been working on their projects for over a year as part of the Creative Clubs Programme, which is run by the UFS Faculty of Education. Guided by veteran Expo facilitators Dr Angela Stott and Coretha van den Heever, they attended 30 sessions on the UFS South Campus, with a total of 140 hours of face-to-face contact time, coupled with many hours of individual work at home, to prepare for the competition.

Their hard work paid off handsomely, with all 23 learners (who worked on 21 projects) achieving medals: six bronze, seven silver, and eight gold. Additionally, five of the learners won best-in-category awards, three won SA Youth Water prizes, and three were shortlisted for the international EYS competition.

“As an introvert, I found it difficult to explain my project to people, but I’ve developed communication skills and confidence through Expo,” said 15-year-old Nicolas Hugo, from Kagisho Secondary School, whose project won a gold medal. Nicolas studied water pollution levels at two inflow sites in the Bloudam catchment area, as well as the dam itself and its outflow, showing the astounding cleaning effectiveness of water reeds.

In addition to his gold medal he won the prize for the best project in his category, a special award in the category of water projects, and for the Best Development Project.

The UFS has a strong commitment to community engagement, and has been working with township schools throughout the province via school-university partnerships for over a decade. The 2023 Bloemfontein EYS competition celebrated the legacy of these partnerships not only through the 23 learners who were directly involved in the UFS programme over the past year, but also through the participation of 14 learners from two schools (Senakangwedi and Setjhaba Se Maketse) in Botshabelo as a direct result of the UFS’s work in those schools in the past. Before UFS ended its partnership with these schools, learners who had been involved in Expo programmes conducted by Dr Stott established science clubs in their schools. These clubs have continued to operate years after UFS exited the schools and the founding learners matriculated. This year these clubs yielded the winning project, Solar Power Stand, by Simthembile Hlahliso and Kabelo Sekoere from Senakangwedi High School.

Many of the learners said they have learned important skills through this process. “I didn’t know how to use a computer, but now I’m so good,” said Sylvia Hlangabeza, who won a gold award.

“I’m so proud of her, I cried,” said Sylvia’s proud mother.

News Archive

UFS researcher engineers metal surfaces

2015-03-03

Shaun Cronjé, a PhD student, in a surface characterisation laboratory at the UFS.

It is well known that the surface of a component is much more vulnerable to damage than the interior, and that surface-originated degradation such as wear, corrosion, and fracture will eventually destroy the component.

“Engineering the surface, based on scientific knowledge, is essential to control these damaging processes. It also creates electronic and geometric structures on the surface which opens up a world of new devices, especially considering the properties on the nano-length scale,” said Prof Wiets Roos from the Department of Physics at the University of the Free State (UFS).

At elevated temperatures, atoms are more mobile and can migrate to grain boundaries and surfaces, which have a major influence on material properties. The redistribution of solute atoms between the surface and the bulk of the material is known as segregation. Knowing the behaviour of segregation at the surface/environment interface can be very useful in the development of new materials. As an example materials can be improved higher efficiency and lower fuel consumption, thus reducing environmental pollution.

The main aims of Prof Roos’s research are to understand surface segregation, use it as a tool, and contribute to the various surface engineering fields.

The surface characterisation laboratories at the UFS are well equipped to do high temperature segregation measurements, and have already proven a success, not only in the ability to prepare the specimens for characterisation, but also in developing models and procedures to quantify the segregation parameters.

The most recent results have demonstrated the importance of taking evaporation into account during quantification.” This has laid the foundation for future studies by installing the necessary hardware in a surface characterisation spectrometer, establishing experimental protocols, and improving an existing model (developed in this laboratory) for simulating segregation profiles,” said Prof Roos.

Segregation parameters allow the researcher to predict and utilise the surface concentration behaviour as a function of temperature and time. “This not only contributes to fields involving corrosion, oxidation, sintering, wear, chemical poisoning, powder metallurgy, and lubrication but adds to the development of self-healing devices,” said Prof Roos.

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