Tungsten nanowires and their field electron emission properties

摘要

The paper "Tungsten nanowires and their field electron emission properties" introduces a simple fabrication method of tungsten nanowires and further describes their promising field emission properties. The authors of this paper did beautiful works. We only feel that their result on the "field enhancement factor," which is as large as 38 256, can be submitted to some further discussion. Since field emission of nanometer-scale materials has become a very important topic, we strongly suggest that the researchers in this area have a unique definition for this often-used parameter.