法国皇帝拿破仑曾经说过:“笔比剑更有威力”,然而他绝对不会想到铅笔中竟然包含着地球上强度最高的物质!美国哥伦比亚大学两名华裔科学家最近研究发现,铅笔石墨中有一种叫做石墨烯的二维碳原子晶体,竟然比钻石还坚硬,强度比世界上最好的钢铁还要高上100倍。这种物质不仅可以用 The French emperor Napoleon once said: “A pen is more powerful than a sword.” However, he would never have imagined that the pencil contained even the most intense substance on earth! Two Chinese scientists at Columbia University recently discovered that there is a pencil graphite The two-dimensional carbon atom crystal, called graphene, is even harder than diamonds and is 100 times more intense than the best steel in the world. This material can not only be used