A new method for large-scale synthesis of Si nanowires was found, which employed solid Si substrate instead of the external silicon source as the Si source.

• 这种方法不需要外来硅源；首次实现了利用硅衬底自身作为硅源，原位生长纳米线；这种直接生长方法还可望与目前的硅材料工艺兼容；