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所谓纳米 ,是一种长度单位 ,1纳米等于十亿分之一米 ,大约相当于一个中等原子直径的十几倍。纳米材料是指晶粒尺寸为纳米级的超细材料。它的微粒尺寸大于原子簇 ,小于通常的微粒 ,一般为 10 0— 10 2ｎｍ (纳米 )。 1984年德国萨尔兰大学的Ｇｌｅｉｔｅｒ以及美国阿贡实验室的
The so-called nano, is a unit of length, 1 nanometer is equal to one billionth of a meter, equivalent to about a dozen times the diameter of a medium atom. Nanomaterials refer to ultra-fine materials with a grain size of nanometers. Its particle size is larger than clusters of atoms, smaller than the usual particles, typically 10 0-10 2 nm (nanometers). Gleiter, University of Saarland, Germany, 1984; and Agon Laboratories, USA