ARUA CoE in Materials, Energy & Nanotechnology Research. Under the theme of Energy, Materials Development and Nanotechnology, ARUA CoE-MEN will use materials and nanotechnology to develop energy solutions for Africa, as well as materials development for efficiency and sustainability, and also develop personnel. The main aim is to develop materials and new technologies to benefit Africa, in both infrastructure and human development, to enable global competition. There will be a range of projects around the technological use of materials, from fundamental to devices up to prototype level and application. The projects should help to identify, and later develop, new opportunities in an African context. This is necessary because often solutions from more temperate climates cannot withstand the harsher conditions in Africa (higher temperatures and humidity), and so are not suitable. This will facilitate the development of new opportunities in an African context (e.g. sustainable manufacturing, off-grid energy technologies, improved materials, and materials recycling - obtaining more useful materials, as well as removing waste), developing the people to do it, and to help Africa become more competitive. ARUA CoE-MEN will investigate barriers to upscaling and uptake of sustainable technologies in Africa. As well as improving materials, strategies for creating and encouraging new technological pathways to facilitate transitions to sustainability in emerging water and energy technologies will be explored. Improved energy security will help the economies develop, leading to more stability with jobs, facilite people to become entrepreneurs, and help to improve the welfare and the wealth of citizens in the different countries. Some of projects target efficiency of materials and hence safety, e.g. by improving buildings and infrastructure (recent flood damage in southern Africa has shown that houses need to be more robust). Improved materials could have even larger long-term benefits on the environment, and help to improve other living conditions, e.g. improving water storage efficiency and cleanliness by combatting corrosion. The potential benefit to the African countries is improved development, improved environments and better education, for researchers and more widely, for the public, by outreach. ARUA CoE-MEN will also try to support more part-time higher degree students, who struggle to balance work, family and their research. This is an untapped source of students, and is an opportunity to increase the skills and work more closely with industry, and possibly entrepreneurs. The benefit to the UK is the strengthening of ties with the different African countries involved, and the potential to enter into business relationships for manufacturing in the future. The hub will be at the University of the Witwatersrand, which has a long-term history of running very successful networks and groups in materials science, and also provides world-class equipment and infrastructure to be shared. The Global Challenges Research Fund (GCRF) supports cutting-edge research to address challenges faced by developing countries. The fund addresses the UN sustainable development goals. It aims to maximise the impact of research and innovation to improve lives and opportunity in the developing world.