These functional inks contain nanoparticles of different compounds such as lithium for batteries and silver for wires. They get printed at room temperature as a liquid, but become a solid after printing. It also means that electronics and batteries can be manufactured together and in configurations that have not been possible before.
Lewis printed a battery that is just 1mm square with an accuracy of 100nm and the reliability of a commercial battery. Functional inks, nozzles and extruders was first introduced back in June and is still at the early stages. However, Lewis has reached a point now where patents exist covering how they function, and the tech is starting to be licensed.
She wants to get them into the hands of manufacturers, but also doesnâ€™t see a reason why a 3D printer couldnâ€™t be offered for home users.