An international team of scientists has produced an electrically conductive metallic glass out of concrete. The process involves using a carbon dioxide laser to melt the components, in an oxygen controlled, levitated state. This prevents the material from forming crystals, which leaves the electrons suspended in the cage like molecule featured in the picture.
The result rivals the stories of alchemists of old. From one of the most ubiquitous building materials known, an extremely strong new glass like material that has the conductive properties of metal, without the corrosive tendencies. The incredible opportuntities for applications are astounding. However production at scale is likely a decade away.