轻点灬大ji巴太粗太长了h-轻点灬大ji巴太粗太长了啊h-轻点灬大ji巴太粗太长了爽文-轻点灬大ji巴太大太深了-japan高清视频乱xxxxx-jiuma和我啪啪

新聞動態
NEWS
Location:Chinese Academy of Sciences > NEWS  > Carbon Nanotubes Carbon Nanotubes

Taming Carbon Nanotubes

Come: Chinese Academy of Sciences    Date: 2012-07-20 15:18:53


Carbon nanotubes have many attractive properties, and their structure and areas of application can be compared with those of graphene, the material for whose discover-y the most recent Nobel Prize was awarded. In order to be able to exploit these pro-perties, however, it is necessary to have full control of the manufacturing proces-s. Scientists at the University of Gothenburg are closing in on the answer.
"Our results show that the metal particles that form the basis of the manufacture of carbon nanotubes must have a certain minimum size, in order for growth to start and to continue. It is also probable that the particles are in liquid form at a man-ufacturing temperature of around 800 °C, even though the metals used may have muc-h higher melting points," says Anders Börjesson from the Department of Physics at the University of Gothenburg.

The scientists have used various computer models to study in detail properties that are difficult or impossible to examine in experimental conditions. Only when we ful-ly understand the manufacturing process will we be able to exploit this material fu-lly.

The diameter of the nanotubes is of the order of one billionth of a metre, and they can be as thin as a single carbon layer. The length of the tubes, in contrast, can extend from the nanometre scale up to several decimetres. Carbon nanotubes can be regarded, quite simply, as thin threads of pure carbon, whose length can be a billi-on times greater than their thickness.

Interest for nanotubes is based on their outstanding properties: they are among the strongest materials known and have extremely high conductivity for both electric cu-rrent and heat.

The strength can be used to reinforce other materials, just as the strength of glas-s and carbon fibres is used in plastics, and steel reinforcement is used in concret-e. Carbon nanotubes, however, would enable plastics to be manufactured that are ten- times stronger than the strongest materials available today. Such materials could be used not only in exclusive sports equipment but also in the construction of buil-dings that appear to come from science fiction: a lift between Earth and space coul-d be anchored using a material based on nanotubes.

The carbon nanotubes may also replace other material when it comes to conducting ve-ry high electrical currents, since they do not become hot, nor do they catch fire. Certain nanotubes have semiconducting properties and could be used to build nanoele-ctronic circuits, giving much smaller and faster processors to be used in computers.

One way of combining the strength and electrical properties of the carbon nanotubes would be to mix them with polymer material, and by weaving threads that also contai-n electronic circuits. It would be possible, for example, to weave instruments for monitoring heart function directly into clothes.

< Previous Exotic Behavior When Mechanical Devic...Electromechanics Also Operates at the... Next >

?
Tel:+86-28-85241016,+86-28-85236765    Fax:+86-28-85215069,+86-28-85223978    E-mail:carbon@cioc.ac.cn,times@cioc.ac.cn,nano@cioc.ac.cn
QQ:800069832    Technical Support ac57.com
Copyright © Chengdu Organic Chemicals Co. Ltd., Chinese Academy of Sciences 2003-2025. manage 蜀ICP備05020035號-3
主站蜘蛛池模板: 成人黄色免费观看 | 成人免费在线视频观看 | 成人中文字幕在线观看 | 国产一级黄色大片 | 男人的天堂色偷偷亚洲京东 | 五月婷婷丁香久久 | 国产亚洲成归v人片在线观看 | 2021精品国夜夜天天拍拍 | 国产高清精品久久久久久久 | 青草视频青年娱乐 | 风流放荡的艳妇小说 | 欧洲在线| 夜夜综合网 | 美女视频黄a视频全免费网站色窝 | 色噜噜狠狠色综合中国 | 交性大片欧美多人 | 高清色 | 又黄又爽又猛大片录像 | 日韩美女片视频 | 国内精品视频 在线播放 | 激情久久久久久久久久久 | 激情五月激情综合网 | 五月天免费在线视频 | 国产日韩在线视频 | 久草毛片 | 午夜精品在线视频 | 成人综合影院 | 在线观看成年人免费视频 | 最近2019中文字幕大全视频1 | 久久人人爽人人爽人人小说 | 精品精品 | 亚洲动漫精品 | 男女啪啪猛烈到合不拢腿小说网 | 欧美国产伦久久久久 | 在线观看黄色的网站 | 久久国产精品免费视频 | 激情综合网五月 | 免费观看又黄又刺激的视频网站 | 国产成人一区二区三区在线播放 | 在线视频一区二区日韩国产 | 亚洲成人观看 |