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10 June 2024 | Story Precious Shamase | Photo Supplied
Prof Richard Ocaya
Prof Richard Ocaya, Associate Professor from the Physics Department.

Prof Richard Ocaya from the Faculty of Natural and Agricultural Sciences at the University of the Free State (UFS) Qwaqwa  Campus has achieved a significant milestone with a newly patented invention. This patent, developed in collaboration with researchers from Turkey and Saudi Arabia, is the result of work that began in 2017, focusing on a special material known as graphitic carbon nitride.

This breakthrough in temperature measurement technology aligns perfectly with the university's Vision 130 commitment to innovation and addressing global challenges. The new device offers a unique solution to a longstanding issue in the field, providing accurate temperature measurements across an extremely wide range. Existing solutions often require multiple devices, leading to increased costs and reduced accuracy, but this invention simplifies the process.

The device, based on a combination of graphitic carbon nitride and silicon, can measure temperatures from -250°C to 250°C with exceptional consistency and linearity. This range and accuracy set it apart from current technologies, making it suitable for various applications, from standard temperature measurement to specialized settings involving extreme temperatures. It could be especially valuable in deep-space exploration, where equipment faces drastic temperature fluctuations.

The patent underscores the university's commitment to fostering collaborative research, a key aspect of Vision 130. Prof Ocaya attributes the success of the invention to the robust nature of the team, established in 2015. The team is now seeking to commercialize the technology by licensing it to a suitable partner, with organizations like NASA expected to show significant interest.

Prof Ocaya advises other academics considering patenting their inventions to ensure the patent solves a real problem uniquely and is based on sound principles. This makes the invention reproducible and protects it from being copied, assigning exclusive rights to the patent holder. Patenting allows for either manufacturing the devices or licensing them to third parties for royalties and profit. He notes that the main consideration is that the innovation must be practical and solve a specific problem in a novel and commercially viable way. He also acknowledges the challenge many academics face, as the "publish or perish" mentality often leads to choosing scientific articles over patents.

Despite securing the patent, Prof Ocaya and his team continue their research efforts, exploring new possibilities while balancing practical research with academic pursuits. He believes the invention will significantly impact the field of temperature measurement, being integrated into many new designs requiring such measurements.

The university proudly supports this innovative research and anticipates its real-world impact, furthering Vision 130's commitment to increasing UFS's research capacity and capability.

News Archive

An astrophysics pioneer at Kovsies
2014-01-05

Prof Pieter Meintjes

Over the last decade Prof Pieter Meintjes’ strong background in astrophysics led to the development of a course of excellence at the University of the Free State.

Today we present an Astrophysics degree at our university, from first-year courses to PhDs.

Meintjes matriculated at the Sybrand van Niekerk High School in Sabie and completed a BSc in Physics and Mathematics at the North-West University in 1988. In 1990 and 1993 he respectively obtained his MSc and PhD in Physics from the same university.

Hereafter he spent a post-doctoral year at the Max Planck Institute for Space Science near München in Germany. In January 1997, Meintjes was appointed as a senior lecturer at our university’s Department of Physics. He was promoted to Professor in Physics in 2008.

Prof Meintjes is a member of the South African Institute for Physics (SAIP) and during 2002-2004 he was also co-chair of the astrophysics and space science group of SAIP. He serves on the executive committee of the National Astrophysics and Space Science Programme (NASSP) and is often a visiting lecturer at the University of Cape Town. He is a NRF-supported researcher and author and co-author of 70 publications in high-profile international journals and published conference issues.

During 2011-2013 he successfully delivered three PhD students along with one MSc student. His PhD students also delivered addresses at international conferences in Champery (Switzerland), Heidelberg (Germany), Paris (France), Barcelona (Spain) and Milan (Italy), Cape Town and the Kruger Game Reserve.

Over the last two years he has also been the author and co-author of six publications in Monthly Notices of the Royal Astronomical Society (MNRAS), as well as various publications in the Astrophysical Journal in support of the international planet search programme. A further 12 publications also came forth from Meintjes’ international conference contributions.

During the recent H.E.S.S. meeting in Namibia, Meintjes was appointed as the latest member of the highly-regarded international cooperation with H.E.S.S.

His membership of the H.E.S.S. group is due to his knowledge on gamma rays, which entails research on high-energy astrophysics.

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