The edge of such a topological insulator has perfect electron transport: no electrons travel backward, no energy is lost as heat, and the number of conducting pathways can even be controlled.

这种拓扑绝缘体的边缘具有完美的电子传输：没有电子向后移动，没有能量作为热量损失，甚至可以控制导电通路的数量。