The magic of cobalt green

We are reaching the physical limits of miniaturisation of micro-electronic components, but a new technology called spintronics may be coming to the rescue. Spintronics involves manipulating the magnetic properties of electrons to do the work of computers.
A major advance in this development is the use of something called cobalt green. Cobalt green is a mixture of zinc oxide and cobalt originally developed by the Swedish chemist Sven Rinmann in 1780.
Sound like science fiction? Well, check it out here.