Once the sapphire was covered with nanotubes, they could place the metal electrodes of the transistors wherever they wanted and remove the unwanted nanotubes with highly ionized oxygen gas.

• 蓝宝石上覆盖奈米管后，就可在任意的位置安装电晶体的金属电极，再以高度离子化的氧气除去不需要的奈米管。