A team of researchers at the University of Sussex may have discovered a solution to the persistent problem of fragile screens of smart phones. Alan Dalton, a Professor at the University of Sussex, and his team have created a new method to make touch screens of smart phones less fragile, much cheaper, and more eco-friendly. Apart from this, the novel approach also assures devices that utilize less power, are quick to respond and do not smudge in the air. The issue is with indium tin oxide, currently utilized to manufacture smart phone screens, which is extremely brittle and highly expensive.
Indium, the primary constituent, is also an atypical metal, which is environmentally destructive to extract. The best substitute to indium tin oxide, Silver is also very costly. The breakthrough from scientists at the University of Sussex has been to unite graphene, a 2D carbon material and silver nanowires. This novel hybrid material complements the performance of the current technologies at a fraction of the original price.
Particularly, the method in which these materials are accumulated is innovative. Structurally, Graphene is single layer of atoms, owing to which, it and can float on the water surface. By making a stamp, researchers can lift up the layer of atoms and put it over the silver nanowire film in a specific pattern. The stamp itself will be created from poly dimethyl siloxane; the same silicone rubber, which in utilized in medical implants and kitchen utensils.