Germanene: topological 2D germanium insulator switches between on and off states is comparable to transistors

https://phys.org/news/2023-05-material-paves-efficient-electronics.html

"melted germanium with platinum... germanium atoms arranged honeycomb lattice on top... switch off applying electric field. This property is unique for a topological insulator. "The possibility to switch between 'on' and 'off' states adds an exciting application case for germanene," says Bampoulis. It paves the way for designing topological field-effect transistors. These transistors could replace traditional transistors in electronic devices. Resulting in electronics that no longer heat up"