One-dimensional (1-D) nanomaterials including nanotubes, naorods, naowires and nanobelts, have been significantly attracted attentions due to their unique electrical, optical, magnetic and mechanical properties. It is important to control the geometry, dimension, composing, crystal structure and properties of the 1-D nanomaterias and investigate the relationship between structure and properties by studying their growth mechanism, which is useful to achieve the goal of synthesizing functional mater...