Uchenna Godwin Azubuike is a GES researcher in the Department of Mechanical Engineering Sciences, University of Johannesburg, South Africa. He is a registered Engineer with the Council for the Regulation of Engineering in Nigeria (COREN). Dr. Azubuike earned his PhD from the University of Nigeria Nsukka in the Department of Mechanical Engineering, specializing in Energy and Power Technology, and he has published numerous peer-reviewed papers on energy systems analysis in well-regarded research journals. Currently, his focus is on Computational Fluid Dynamics in relation to hydrogen generation and storage in the Atomic Layer Deposition Research Group of the Department of Engineering Science, University of Johannesburg.Kingsley Ukoba is a lecturer and researcher in the Department of Mechanical Engineering Sciences, University of Johannesburg, South Africa. He obtained a doctoral degree in Mechanical Engineering from the University of KwaZulu-Natal, Durban, South Africa. Dr. Ukoba has won several individual and group grants, awards, and fellowships. including the one million South Africa Rands grant by SASOL/NRF Collaborative Research grant for water treatment using Atomic Layer deposition in 2021. He is also a 2022 Engineering for Change (E4C) fellow sponsored by the American Society of Mechanical Engineers (ASME) to support an Impact Project around Climate Action. He has authored four books, numerous book chapters, and over 70 journal articles.Tien-Chien Jen is the South Africa Research Chair (SARCHI) of Green Hydrogen in the whole of South Africa. He received his Ph.D. in Mechanical and Aerospace Engineering from University of California, Los Angeles (UCLA), USA specializing in thermal aspects of grinding. He has received several competitive grants for his research, including those from the US National Science Foundation, the US Department of Energy, and the EPA. Prof. Jen is the Director of the newly established Atomic Layer Deposition Research Centre of the University of Johannesburg, South Africa, and he is currently leading the drive for the application of Atomic Layer deposition equipment (first of its kind in Africa) for various applications (hydrogen, renewable energy, thin films, etc.). Prof. Jen has authored over 360 peer-reviewed articles, 16 book chapters, and 7 books.