If the double-layer Graphene processed into light-weight (nanobelts), band-gap can further increased.
如果把双层石墨烯加工成细线（纳米带）状，带隙还能进一步扩大。
2
The geometrical structures and electronical properties of BN nanobelts with different width are investigated by first-principles study.
本文采用第一性原理研究了不同带宽下BN纳米带的几何结构与电子性质。
3
The main contents can be summarized as follows: Firstly, the raspite PbWO4 nanobelts with length up to a few millimeters were obtained by a facile composite-salt-mediated synthesis method.