更新時間：2021-06-12 03:47:55作者：admin2
A Short History of the development of nanotechnology納米發(fā)展小史
In 1959, the famous physicist, Nobel laureates Richard. Feynman predicted that human beings can use small machines to produce smaller machines, according to the final realization of the wishes of the human order-by-atom, to create products that this is the first on the dream of nanotechnology.1959年，著名物理學(xué)家、諾貝爾獎獲得者理查德。費曼預(yù)言，人類可以用小的機器制作更小的機器，最后實現(xiàn)根據(jù)人類意愿逐個排列原子、制造產(chǎn)品，這是關(guān)于納米科技最早的夢想。
In 1991, American scientists successfully synthesized carbon nanotubes, and found that it was only with the quality of the volume of steel 1 / 6, the intensity is 10 times that of steel, so called super fiber. The nano-materials found signs of human To explore the properties of the material has reached a new height. In 1999, nanotechnology products to achieve an annual turnover of 50,000,000,000 U.S. dollars1991年，美國科學(xué)家成功地合成了碳納米管，并發(fā)現(xiàn)其質(zhì)量僅為同體積鋼的1/6，強度卻是鋼的10倍，因此稱之為超級纖維.這一納米材料的發(fā)現(xiàn)標(biāo)志人類對材料性能的發(fā)掘達(dá)到了新的高度。1999年，納米產(chǎn)品的年營業(yè)額達(dá)到500億美元
What is a nano-materials什么是納米材料
Nanometer (nm) is the length of the unit, a nanometer is 10-9 meters (a billionth of a meter), the macro-material, the nano is a small unit, not as human hair in diameter for the general 7000 -- 8000nm, the diameter of human red blood cells normally 3000-5000nm, the general diameter of the virus are also a few dozen to several hundred nano-size, metal grain size generally Submicron order of magnitude; for microscopic material, such as atoms, molecules, such as before with Egypt to Said an Egyptian equivalent to a hydrogen atom's diameter, a nanometer is 10 Egypt納米（nm）是長度單位，1納米是10-9米（十億分之一米），對宏觀物質(zhì)來說，納米是一個很小的單位，不如，人的頭發(fā)絲的直徑一般為7000-8000nm，人體紅細(xì)胞的直徑一般為3000-5000nm，一般病毒的直徑也在幾十至幾百納米大小，金屬的晶粒尺寸一般在微米量級；對于微觀物質(zhì)如原子、分子等以前用埃來表示，1埃相當(dāng)于1個氫原子的直徑，1納米是10埃
It is generally believed nanomaterials should include two basic conditions: First, the material characteristics of the 1-100nm in size between the two materials at this time is different from conventional size materials have some special physical and chemical properties.一般認(rèn)為納米材料應(yīng)該包括兩個基本條件：一是材料的特征尺寸在1-100nm之間，二是材料此時具有區(qū)別常規(guī)尺寸材料的一些特殊物理化學(xué)特性。
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