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17 April 2019 | Story Leonie Bolleurs
Science ambassadors
Friends Tekano Mbonani and Chaka Mofokeng are pursuing graduate degrees in respectively Physics at the University of the Free State (UFS) and Astronomy at the University of the Western Cape. The two got together and decided to reach out to the high school, Leseding Technical Secondary School, where they came from.

It was a full house as more than 120 learners packed the hall at the Leseding Technical Secondary School in the Free State, where two young Astronomy researchers had come home to tell their younger peers about their studies and career prospects across South Africa.

Chaka Mofokeng and Tekano Mbonani are both former learners at the high school. Currently pursuing graduate degrees – for Mbonani in Physics at the University of the Free State (UFS), and for Mofokeng in Astronomy at the University of the Western Cape – the two friends got together and decided to reach out to the high school where they came from.

The event took place in January before schoolwork, tests, and exam preparations are occupying learners’ minds, inviting them to think about the big picture – the future, and how to be part of it. This is timely, because in July last year, the MeerKAT radio telescope was inaugurated in the Karoo. The MeerKAT is the first step to the international SKA telescope project, but it is already one of the best radio telescopes in the world and has placed South Africa firmly on the world map of radio astronomy and engineering.

Building a bridge
“This project enables us to build a bridge between secondary and tertiary institutions. Currently focused on senior secondary students, we aim to promote science through outreach events and activities. Using science and technology-based activities and events, such as stargazing at an observatory or exploring the universe in a planetarium, we want to attract these future secondary graduates. We also provide mentorship, hoping to help them improve their academic performance in matric,” said Mbonani.

For a whole morning, they spoke about their journeys, about science, about the skills that scientists acquire during their studies and all the opportunities such studies open up in an era where the 4th Industrial Revolution is predicted to reduce the number of jobs in many traditional professions. They addressed their peers in both English and Sesotho.

Astronomy in South Africa contributes to critical-skills development. Investing in the MeerKAT, for example, meant that over a thousand bursaries were made available through the SKA South Africa Human Capacity Development programme. Young scientists like Mofokeng and Mbonani have the opportunity to be part of MeerKAT science projects through their studies, using machine learning and other skills that are high in demand in today’s world. This was one of the messages they brought home.

Gaining new skills

“As an Astronomy research student, I have gained skills such as data analysis, mathematical modelling, communication and writing, programming, and teamwork, among others. These are requirements for most companies and institutions. With the unfolding of the 4th Industrial Revolution, such skills sets make young and aspiring scientists the perfect candidates for making the most of future opportunities,” reflected Mofokeng.

Most of the learners said they have never attended a science-outreach event. They were inspired by the young scientists’ stories and nearly half of them said they could see themselves pursuing a career in science. The learners also expressed a strong interest in more events of this kind, as well as mentorship during Grades 11 and 12 from peers at university. They asked about the salaries earned by astronomers, how long the studies take, and where astronomers are working in South Africa.

This initiative, started by two bright young scientists, hopefully marks the beginning of many more events of this kind. Mofokeng and Mbonani are already planning what to do on their next trip home.

News Archive

Lithium-ion batteries research set to improve ordinary lives
2016-02-11

Description: Dr Lehlohonolo Koao  Tags: Dr Lehlohonolo Koao

Dr Koao is making a much-needed contribution in improving lives of ordinary people through his research on lithium-ion batteries.

The future of relevant and top-notch scientific research at the Qwaqwa Campus is in good hands. Dr Lehlohonolo Koao is one of the five members of the Vice-Chancellor’s Prestige Scholars Programme (PSP) on the Qwaqwa Campus.

The need to improve the efficiency of heating mechanisms in his immediate community in Qwaqwa, and the support he receives from the PSP, have become catalysts for his current research project on lithium-ion batteries. According to Dr Koao, the study will focus on producing batteries that last longer, store more energy, are cheaper to manufacture, and are environmentally friendly when being disposed of. These are key factors in solar energy.

‘’The majority of households in my neighbourhood have benefited from the government’s project of providing households with solar panels to help with lighting, cooking, and heating without worrying about the ever-increasing electricity costs,’’ said Dr Koao.

‘’Since my arrival in the area, I have realized that the heat absorption rate of the batteries used by solar panels is not enough. As a result, these batteries also lack enough power to sustain the supply throughout the day, especially on a cloudy day,’’ he said.

His research project focuses on improving the efficiency of lithium-ion batteries that are now commonly used in portable electronics, such as cell phones and laptops. This kind of battery is rapidly replacing the usual lead-acid batteries. Dr Koao’s determination to contribute towards a safer and more efficient heating absorption system has made him move away completely from his PhD study on lighting material.

‘’My previous study was on reducing the power usage on domestic and industrial lights as they use more electricity. This study, on the other hand, will enhance power retention in the batteries for improved daily life since cell phones, solar panels, and laptops, to mention only a few, are now a way of life,’’ he added.

Dr Koao is a Senior Lecturer in the Department of Physics, where he specializes in solid state materials.

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