E-Mail IMAGE: A team of researchers led by Associate Professor Duong Hai-Minh (seated, centre) from the National University of Singapore has developed a simple, cost-effective and eco-friendly technique to upcycle metal waste... view more Credit: National University of Singapore Metals are one of the most widely used materials in the world - they are used in cookware, tools, electric appliances, electric wires, computer chips, jewelry and so on. With the growing demand for metal products, it is crucial to promote sustainable and environmentally-friendly methods of recycling metal ...