十亿分之一米到底有多大?对此,哈佛大学的化学家George Whitesides曾经说过,这取决于人们看问题的角度。对于工程技术人员和材料学家来说,纳米结构是极其微小的,因此在芯片上构造纳米结构需要非常精确的宏观成型技术(macroscopic patterning techniques)。而对于夏幼南这样的化学家来说,一个纳米可以相当大,因为他们已习惯于 In the end, George Whitesides, a chemist at Harvard University, once said it depends on how people view the issue. For engineers and material scientists, nanostructures are extremely small, so constructing macrostructures on the chips requires very precise macroscopic patterning techniques. For chemists such as Xia Younan, a nanometer can be quite large because they are accustomed to