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21 September 2022 | Story Leonie Bolleurs | Photo Johané Odendaal and Edward Lee
UFS Solar car
Team UFS entered the Sasol Solar Challenge for the very first time this year, competing with seven other teams and showcasing their technological input and innovation.

Excitement. Nervousness. A thousand thoughts going through our minds, but primarily “Are we really ready for the challenges that lie ahead?” and “What did we get ourselves into?” In the moments leading up to this year’s Sasol Solar Challenge, these were the thoughts and emotions of Team UFS, who entered their solar car, Lengau.

“But I had confidence in the team,” says Dr Hendrik van Heerden from the UFS Department of Physics at the University of the Free State (UFS) and project manager of Team UFS who entered the challenge for the very first time this year.

Testing perseverance

Entering the Sasol Solar Challenge – a biennial competition that has been running since 2008 – Team UFS competed against seven other teams (representing local and international universities, high schools, and engineering teams), sharing the public roads of South Africa with trucks and regular traffic, sometimes experiencing steep mountain climbs, testing not only their technological input and innovation, but also their perseverance over an eight-day period. 

“One of our main challenges was the long time on the road, to which the heavy weight of the solar car, efficiency of the solar panels, and the effective charging of the battery contributed,” says Dr Van Heerden, stating that these problems were difficult to tackle with the small budget they had. “We, however, stayed positive and was determined to pull through.” 

“We were also open for learning from the other teams, the scrutineers, and observers regarding the mechanical, electrical, and body of competing solar cars. Thus, building knowledge and collaborating is a success we celebrate,” he adds.

In the end it paid off, as Team UFS completed the race, covering a distance of more than 500 km and ending in seventh place overall. The team that finished with the greatest distance covered within the allotted time won the challenge, in this instance the Brunel Solar Team, covering 4 228,2 km.

Dr Van Heerden believes that they did exceptionally well for a debut team, proving themselves against the best. “I am of the opinion that this challenge made us stronger and gave each of us a new perspective on how we should approach life,” he adds.

“As we are all enthusiastic about science and engineering, this challenge inspired us to build towards a future where renewable energy could be an important source of energy in South Africa.”
For a debut team, we did exceptionally well, proving ourselves against the best. – Dr Hendrik van Heerden.

Learning the ropes

The teams left Carnival City in Johannesburg on 9 September 2022 and arrived at the finish line at the V&A Waterfront in Cape Town on Friday 16 September 2022.

Talking about the next race, Dr Van Heerden says he wants to build a better, more effective solar car. “We strive to continuously improve the design, technology, and science going into our car,” he says. 

“For this challenge, we were interested in learning about the mechanical, electrical, and overall body of a solar car. Hence, our solar vehicle was designed well enough to participate and reliable enough to succeed.”

According to him, their focus will shift to competing against the other teams for the next Sasol Solar Challenge. “We will also be more prepared, since we now know what to expect from the challenge. It was our first time participating in the Sasol Solar Challenge, and we’ve learnt so much from the past two weeks – we will carry that forward to the next challenge.

 

News Archive

State-of-the-art physics equipment and investment in students result in academic success
2017-09-26

Description: State-of-the-art physics equipment 1 Tags: State-of-the-art physics equipment 1 

At the recent nanotechnology facility tour at the UFS,
were, from the left, Dr Mthuthuzeli Zamxaka, SAASTA;
Prof Hendrik Swart, Sarchi Chair in the Department of Physics;
and Xolani Makhoba, Department of Science and Technology.
Photo: Leonie Bolleurs

Nanoscience, which is revealing new properties of very small arrangements of atoms, called nanoparticles, is opening a new world of possibilities. The Department of Physics at the University of the Free State is undertaking fundamental research with potential commercial applications. Its equipment and expertise is giving solid state physics research the edge in South Africa.

The UFS team of researchers and students are passionate about studying planets and atoms, all under one roof. Recently, the department, in collaboration with the South African Agency for Science and Technology Advancement (SAASTA), hosted a nanotechnology facility tour to give the public, learners and the media the opportunity to familiarise themselves with the science of nanotechnology, its origins, potential applications and risks.

Successes of the department
According to Prof Hendrik Swart, Senior Professor in the Department of Physics, the increase in resources since 2008 is playing a big role in the success rate of its research outputs. The Sarchi Chair awarded to Prof Swart in 2012 (bringing with it funding for equipment and bursaries) also contributed to the successes in the department.

The UFS Directorate Research Development also availed funding that was used for bursaries. These bursaries made it possible for the department to appoint 10 post-doctoral fellows, not one of them originally from South Africa.

The investment in people and equipment resulted in researchers and students publishing some 80 articles in 2016. Their work was also cited more than 900 times by other researchers in that year.

Another highlight in terms of the department’s growth in the past 10 years is the new wing of the Physics Building. Physics at the UFS is the only place in sub-Saharan Africa where state-of-the art equipment is found under one roof.

Description: State-of-the-art physics equipment 2  Tags: State-of-the-art physics equipment 2  

Antonie Fourie, Junior Lecturer in the UFS Department of
Physics, explained to a group of delegates and
members of the media the workings of an electron beam
evaporation system.
Photo: Leonie Bolleurs

Application of research
The department is a unique research facility with equipment that includes the X-ray Photoelectron Spectrometer (for the study of atoms), the Scanning Auger Microscope, as well as the Ion Time-of-Flight Secondary Ion Mass Spectrometer (revealing the chemical bonds in a sample, and drawing maps of the positions of atoms).

One of the areas on which the department is focusing its research, is phosphors. Researchers are exploring light emitting diodes (LEDs) which use less energy, are brighter and provide a wider viewing field. They are also looking into LED displays (LCDs) which are used in flat screens – the phosphors create the different colours and backlighting.

The research on solar cells reveals that phosphors can increase their efficiency by increasing the range of light frequencies which can be converted into electricity. Glow-in-the-dark coatings absorb light in the day and emit it later so cells can charge at night. As glow-in-the-dark phosphors become cheaper and more effective, they can be used as a lighting substitute on the walls of houses, street numbers and stop signs.

Video production of the Department of Physics research and equipment

 

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