A superconducting ink made through a simple process called chemical exfoliation could be used to print the cold circuits inside quantum computers and MRI machinesA render of a quantum computerShutterstock / Bartlomiej K. When the layered material is placed into diluted sulphuric acid, it is similar to dunking a crepe cake in water: the potassium dissolves away, and only the thin layers of tungsten disulfide remain. In the future, the researchers hope that this method could be used to create inks that are superconductive at higher temperatures