We’re surrounded by electrically powered devices these days. From our lights, to our kettles, and of course our phones! Electricity flows through copper or aluminium wire to power or charge all ...

Topological insulators are strange stuff – the bulk of this material is insulating and cannot carry an electrical current, yet the surfaces of the same material are conducting. This means that charged ...

Some materials let electricity pass through them easily. These materials are known as electrical conductors. Metal is used in plugs to allow electricity to transfer from the wall socket, through ...