Topological insulators are a game-changing class of materials; charged particles can flow freely on their edges and route themselves around defects, but can’t pass through their interiors. This perfect surface conduction holds promise for fast and efficient electronic circuits, though engineers must contend with the fact that the interiors of such materials are effectively wasted space.
Click here for original story, New topological insulator reroutes photonic ‘traffic’ on the fly
Source: Phys.org