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05 June 2019 | Story Leonie Bolleurs | Photo Leonie Bolleurs
Lucas Erasmus and Prof Hendrik Swart
Lucas Erasmus and Prof Hendrik Swart (right) are working on a joint project with Ghent University to find an attractive solution to address the energy demands of buildings, electric motor vehicles, and mobile electronics.

With a constant increase in the price of electricity, any innovation to replace this necessity in our daily lives is welcome. 

The University of the Free State (UFS), whose vision is supported by an element of innovation, welcomes the recent agreement between its Department of Physics and Ghent University.

Attractive solution


Not only will this research – which aims to develop the materials necessary for transparent solar panels – enlarge the international research footprint of the UFS, but it is also an attractive solution to address the energy demands of buildings, electric motor vehicles, and mobile electronics without affecting their appearance.

According to Prof Hendrik Swart, from the UFS Department of Physics, the agreement between the two universities entails a joint doctoral degree in which both universities will supervise the project and the awarding of the doctorate. The student, Lucas Erasmus, will conduct research at both institutions.

Transparent solar panel

The idea with the research is to develop glass that is transparent to visible light, just like the glass you find in the windows of buildings, motor vehicles, and mobile electronic devices. However, by incorporating the right phosphor materials inside the glass, the light from the sun that is invisible to the human eye (ultraviolet and infrared light) can be collected, converted, and concentrated to the sides of the glass panel where solar panels can be mounted. This invisible light can then be used to generate electricity to power these buildings, vehicles, and electronic devices. The invention is therefore a type of transparent solar panel.

Implemented in cellphone screens

This technology can be implemented in the building environment to meet the energy demands of the people inside the buildings. 

The technology is also good news for the 4,7 billion cellphone users in the world, as it can be implemented in the screens of cellphones, where the sun or the ambient light of a room can be used to power the device without affecting its appearance. 

Another possible application is in electric cars, where the windows can be used to help power the vehicle.

Low-income housing

Erasmus added: “We are also looking at implementing this idea into hard, durable plastics that can act as a replacement for zinc roofs.” 

“This will allow visible light to enter housing, and the invisible light can then be used to generate electricity. The device also concentrates the light from a large area to the small area on the sides where the solar panels are placed; therefore, reducing the number of solar panels needed and, in return, reducing the cost.”

The technology will take about a decade to implement.

“This study is currently ongoing, and we are experimenting and testing different materials in order to optimise the device in the laboratory. After this, it needs to be upscaled in order to test it in the field. It is truly the technology of the future,” said Erasmus.

Video: Barend Nagel

News Archive

"Service" needs to return to public service
2010-09-14

At the memorial lecture were, from the left, front: Chris Hendriks, Proff. Liezel Lues, Chris Thornhill and Lyndon du Plessis; middle: Prof. Hendri Kroukamp, Mss Alet Fouche, Lizette Pretorius; and back: Proff. Koos Bekker and Moses Sindane.
– Photo: Stephen Collett.

There is a serious need for the concept of “service” to be reintroduced to the public service. In addition to this, public servants need to behave ethically and honestly if the public service were to achieve its main aim of service delivery to South African citizens and thereby also restore the trust of citizens in the state.

This was the central theme of the JN Boshoff Commemorative Lecture hosted by the Department of Public Administration and Management at the University of the Free State UFS). The lecture by Prof. Chris Thornhill, emeritus professor of Public Administration and Management at the University of Pretoria, focused on “Administrative and Governmental Challenges: Lessons from the Past”. He drew pertinent parallels with the administrative and governmental practices during the times of Pres. JN Boshoff, second president of the Orange Free State in 1855, and the challenges faced in this regard by the current government and public service.

Prof. Thornhill highlighted important aspects such as globalisation, the environment, public service and democratic government in his presentation.
He said the borders between countries have all but vanished and governments therefore have to carefully consider the effects of globalisation on its domestic affairs. The strength of a country’s currency, for example, was not only determined by how that country viewed or perceived it, but also by the international community’s perception of that country’s political and economic stability. This, in turn, could have serious implications for that country’s investment and economic prospects.

Governments are compelled to attend to the utilisation of its natural resources as these resources are finite and therefore irreplaceable. Policy interventions have to be introduced to decrease or regulate the use of certain natural resources or alternative measures need to be introduced. The example of bio-fuel production in various countries was highlighted.

He said the South African public service is characterised by three debilitating factors, namely the prevalence of corruption, the interference of politicians in administrative functions and a lack of appropriate skills and therefore a lack of commitment on the part of officials. In the municipal sector, for example, 46% of municipal managers have less than one year’s experience and this mainly occurs because of the practice of deployment (the appointment of a person based on political affiliation). An amendment to the Local Government: Municipal Systems Act is currently under consideration, in terms of which municipal managers will be disallowed to hold party political positions simultaneously.

According to Prof. Thornhill this is a step in the right direction, but more needs to be done to neutralise the impact of these debilitating factors in order to restore the credibility of the public service.

On democratic government Prof. Thornhill said the fact that the majority of a country’s citizens elect a political party to power does not automatically make the government capable of governing effectively and efficiently. It is therefore important for the rulers to understand their governing role within a democratic context, but more importantly to act accordingly. It is also important not to centralise power unduly as this could be a serious threat to accountable government. The 17th amendment to the Constitution, 1996, currently under consideration, and in terms of which national and provincial government will be allowed to intervene in local government matters, was highlighted as a case in point.

Prof. Thornhill said it was essential for those involved to sincerely and honestly and ethically deal with the above matters for the public service to overcome current challenges.
 

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