纳米和纳米技术纳米是长度单位,1纳米等于十亿分之一米,相当于45个原子排列起来的长度。人的1根头发就有6万纳米那么粗。20世纪80年代,科学家发明了扫描隧道显微镜,它能放大一亿倍,这样,就能看见纳米级的物体。纳米技术的研究范围为1nm～100nm,这个范围称为纳米级。把铁制成纳 Nanometers and Nanotechnology Nanometers are length units, one nanometer equals one billionth of a meter, which equates to 45 atoms arranged in length. One man’s hair is 60,000 nanometers so thick. In the 1980s, scientists invented a scanning tunneling microscope that magnified 100 million times so that nanoscale objects could be seen. Nanotechnology research range of 1nm ~ 100nm, this range is called nanoscale. Made of iron satisfied