编者按碳是一种神奇的元素.除了大家熟知的钻石,还可以呈现从零维(富勒烯)、一维(碳纳米管)到二维(石墨烯)的稳定结构.这些结构的核心是二维单层石墨片结构,对其基本电子态结构的理论可以追溯到20世纪40年代(Wallace P R 1947 Phys.Rev.71 622).单层石墨片或石墨烯的应用也至少可以追溯到20世纪70年代.单层石墨片作为电镜样品的完美支撑膜,对20世纪七八十年 Editor’s note Carbon is a magical element that, in addition to well-known diamonds, can exhibit stable structures from zero-dimensional (fullerene), one-dimensional (carbon nanotubes) to two-dimensional (graphene) Is a two-dimensional, monolayer graphite sheet structure whose theory of the basic electronic state structure dates back to the 1940s (Wallace PR 1947 Phys. Rev. 71 622). The application of monolayer graphite sheets or graphene has also been traced back to, at least, 70s of the 20th century, monolithic graphite film as the perfect support film electron microscopy samples of the seventies and eighties of the 20th century