读者朋友一定还记得中学化学课上学到的碳这一奇妙的物质,它的两种同素异形体,性质完全相反:金刚石堪称自然界的“第一硬”,而石墨又是各种矿物中软得不能再软的一种。近年来纳米技术的兴起又为它带来了另一大新奇,这就是碳的另一种同素异形体——碳纳米管(脚注)。 Readers must still remember the wonderful chemistry of carbon in chemistry class at middle school. Its two types of allotropes are exactly the opposite in nature. Diamonds are the “first hard” in nature, and graphite is a kind of soft Can not be a soft kind. In recent years, the rise of nanotechnology has brought another big novelty to it, which is another carbon allotrope - carbon nanotubes (footnotes).