从宏观世界到微观世界 C6o0.7nm衫 Foo中a(22cm to6007am 10m 10m (=1cm 10'm (=1mm) 10m 10m 10*m (=1um 10m(.100m 10'm 10'm (=1nm) 10m 单壁碳管 1.4nm Pet fea(lmm unde of single-walled bon na 14n 100nm 90nm 80nm 20nm 10nm inm 多90 20 nm Figure 2.1.Length scale showing the nanometre in context.The length scale at the top d2mwan anges from 1m to 10-10m,and illustrates the size of a football compared to a carbon 60 Each etter in the ogo (C molecule.also known as a buckyball,For comparison the world is approximately one is about 5nm from top hundred million times larger than a football,which is in turn one hundred million times larg- DNA er than a buckyball.The section from 10-7m (100nm)to 10-9m (1nm)is expanded below. oscience and nanotechnologies is from 100nm down to 2nm the atomic scale-approximately 0.2nm. Pt/TiO2催化剂 跳蚤 头发 红细胞 病毒 从宏观世界到微观世界 Pt/TiO2 催化剂 DNA 2 nm 单壁碳管 1.4 nm C60 0.7 nm