纳未材料简介 An introduction to nanomaterials 李彦 北京大学化学学院材料化学糸
纳米材料简介 An Introduction to Nanomaterials 李 彦 北京大学化学学院 材料化学系
李彦 Tel:62756773 Email:yanli(@chem.pku.edu.cn http://www.chem.pku.edu.cn/liy/
李 彦 Tel: 62756773 Email: yanli@chem.pku.edu.cn http://www.chem.pku.edu.cn/liy/
引言及纳米材料概述 纳米材料的特性 纳米材料的制备 纳米材料的表征 五、纳米材料的应用 六、纳來材料之星—单壁碳纳米管
一、引言及纳米材料概述 二、纳米材料的特性 三、纳米材料的制备 四、纳米材料的表征 五、纳米材料的应用 六、纳米材料之星 —单壁碳纳米管
引言及纳米材料概述 1.纳米科技研究的重要性 2.什么是纳米材料 3.纳米科技发畏历史回顾 4.自然界的纳米材料 5.纳未材料的分类 6.纳米材料的组装体及超晶格和阵列
一、引言及纳米材料概述 1. 纳米科技研究的重要性 2. 什么是纳米材料 3. 纳米科技发展历史回顾 4. 自然界的纳米材料 5. 纳米材料的分类 6. 纳米材料的组装体及超晶格和阵列
Why moving into nanoworld AIntellectual drive . Miniaturization is of interest Less space, faster, less materials, less energy .More important Novel properties/phenomena/process New structure and functions Engineering beyond nature Unity and generality -At the building blocks of all natural/artificial things, systems Most efficient length scale for manufacturing Less energy than for subatomic or macroscopic Transcendent effects at the confluence of steams -s&T; Living/non-living; interdisciplinary: Relevance areas
Why moving into nanoworld A.Intellectual drive •Miniaturization is of interest Less space, faster,less materials, less energy •More important: Novel properties/phenomena/process -New structure and functions;Engineering beyond nature Unity and generality -At the building blocks of all natural/artificial things,systems Most efficient length scale for manufacturing -Less energy than for subatomic or macroscopic Transcendent effects: at the confluence of steams -S&T; Living/non-living;interdisciplinary; Relevance areas
B Promise of nanotechnology example of societal implications) Knowledge base: better comprehension of nature, life A new world of products: -$1trillion/y in 10-15years Materials beyond what chemistry can do: $340B/y in 10 years for materials and processing, (estimation by industry group) Electronnics in 10-15 years: $300B/Y for semiconductor industry times more for global integrated circuts(estimation by SIA Pharmaceutics in 10-15 years about half of production will depend on nanotechnology, affecting about $180B/Y Chemical plants in 10-15years nanostructured catalysts in petroleum and chemical processing about $100B/Y -Aerospace: about $70B/Y in 10 years Tools(measurement, simulation)--$22B/Y in 10y E Improved healthcare: extend life-span, its quality, human physical capabilities($31B in tools for healthcare in 10 years L Sustainability: agriculture water, energy -45Bly in 10 years) materials, environment, exiting lighting energy reduction% or $100B/Y
B.Promise of nanotechnology (example of societal implications) Knowledge base:better comprehension of nature, life A new world of products: -$1trillion/ y in 10-15years -Materials beyond what chemistry can do:$340B/y in 10 years for materials and processing, (estimation by industry group) - Elec tronnic s in 10-15 years: $300B/Y for semiconductor industry, times more for global integrated circuts (estimation by SIA) - Pharmaceutics in 10-15 years about half of production will depend on nanotechnology, affecting about $180B/Y – Chemical plants in 10-15years:nanostructured catalysts in petroleum and chemical processing about $100B/Y –Aerospace: about $70B/Y in 10 years –Tools(measurement,simulation)--$22B/Y in 10y Improved healthcare:extend life-span,its quality, human physical capabilities(- $31B in tools for healthcare in 10 years ) Sustainability: agriculture, water,energy( -45B/y in 10 years) materials,environment,exiting lighting energy reduction –10% or $100B/Y
什么是纳米材料?什么是纳米科学? The word neno means 1- so a nanometer Is one billionth of a meter one definition of nanoscience sthat it concems itseltwiu y the study of objects which are anywhere rom hundreds to tens or manometers m siai I ilariorme let
什么是纳米材料？什么是纳米科学？
How smalis land nanometer obects are toosmalltobe 1 millimeter s one ilion seen with your eye In nanornehers act it you wanted to one angstrom s Tenth of a namometer seeatnmshed marble nyour hand your erB would nare to be smallerthana human hair
Noble prize laureate Feynman. in his 1960 article‘ Theres plenty room at the bottom” discussed the advantages that could be provided by controlling the structure of matter atom by atom. For example, he pointed out that if a bit of information requires only 100 atoms. then all the books ever written could be stored in a cube with sides 0.02 in long
Noble Prize laureate, Feynman, in his 1960 article “There’s plenty room at the bottom” discussed the advantages that could be provided by controlling the structure of matter atom by atom. For example, he pointed out that if a bit of information requires only 100 atoms, then all the books ever written could be stored in a cube with sides 0.02 in long
纳米纪事 最早的纳米材料: 中国古代的铜镜的保护层:纳米氧化锡 中国古代的墨及染料 >1857年,法拉第制备出金纳米颗粒 >1861年,胶体化学的的建立 1962年,久保(Kubo)提出了著名的久保理论 ≯上世纪七十年代末至八十年代初,开始较糸统的研究 >1985年, Kroto和 Smalley等人发现C6o >1990年7月,在美国巴尔的摩召开第一届纳米科技会议 >1994年,在波士顿召开的MRS秋季会议上正式提出纳未 材料工程
纳米纪事 ¾最早的纳米材料： 中国古代的铜镜的保护层：纳米氧化锡 中国古代的墨及染料 ¾1857年，法拉第制备出金纳米颗粒 ¾1861年，胶体化学的的建立 ¾1962年，久保(Kubo)提出了著名的久保理论 ¾上世纪七十年代末至八十年代初，开始较系统的研究 ¾1985年，Kroto和Smalley等人发现C60 ¾1990年7月，在美国巴尔的摩召开第一届纳米科技会议 ¾1994年，在波士顿召开的MRS秋季会议上正式提出纳米 材料工程