Researchers developed a graphene device that switches from a superconducting material that conducts electricity without losing any energy, to an insulator that resists the flow of electric current, and back again to a superconductor — all with a simple flip of a switch. https://newscenter.lbl.gov/2019/07/17/a-graphene-superconductor-that-plays-more-than-one-tune/
January 2019 – July 2022
