1. The easiest way to chop, we found, is to use sellotape.
将其削碎的最简单方法是用透明胶
2. We looked at what is left on the sellotape in a microscope, and found, to our great surprise, films of graphite which were in the range which we wanted to achieve.
我们通过显微镜观察透明胶上的残留物 然后惊奇地发现 石墨薄膜已经达到了 我们所期望的尺寸