头发丝直径 血红细胞直径 可见光波长 集成电路线宽 ＝ 70,000 ＝ 8,000 nm nm
＝ 380～780 nm ～ ＝ 130 nm
纳米技术 0.1 ~ 100 nm ?
氢原子直径 ＝ 0.10 nm
Definition
纳米技术：是指在0.1-100nm的 纳米技术：是指在0.1-100nm的尺度 范围内研究和应用物质的 范围内研究和应用物质的 行为、特性以及相互作用 的交叉学科及高新技术。 交叉学科及高新技术。
iron 1937
Max Knoll and Ernst Ruska -1931
electron microscopy
费曼(Feynman): 人类总有一天可排列原子 人类总有一天可排列原子(1959) 费曼
"There is plenty room at the bottom"
Moore’ Moore’s law
中国开始在纳米技术领域占一席之地 (1993)
The Nanometer Age: Challenge and Chance
H.Rohrer
Microelectronic Engineering,27(1995) 3-15 3-
The new player in the emerging nano-world are nanoindividual, selected objects of the size of some 50 nm down to molecules and atoms. The new aspect atoms. of science and technology on the nanometer scale is that these objects are treated as individuals, not as individuals, ensemble members. To a great extent, this requires realreal-space methods. Local probe methods, such as methods, scanning tunneling microcopy and its derivates, are therefore a key to the nano-word. Major challenges nano-word. of the new nanometer world are to….. to…
