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宁静致远8639铜虫 (初入文坛)
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[求助]
如何测碳纳米管线的热导率或导热系数啊？ 已有1人参与
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| 哪位大神告诉我用什么仪器测、哪里有测碳纳米管线的导热系数啊，万分感谢！ |
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宁静致远8639
铜虫 (初入文坛)
- 应助: 1 (幼儿园)
- 金币: 421.9
- 帖子: 19
- 在线: 15.4小时
- 虫号: 2595878
- 注册: 2013-08-14
- 性别: GG
- 专业: 碳素材料与超硬材料
3楼2015-10-07 10:19:56
【答案】应助回帖
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宁静致远8639: 金币+10, ★★★很有帮助 2015-10-07 10:21:06
宁静致远8639: 金币+10, ★★★很有帮助 2015-10-07 10:21:06
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请你搜索这个文献。目前国内是没有办法测量的，碳管需要需要微机械臂搭在两个热源之间，由于静电的作用，极其容易断裂。其中的第一作者是九州大学的 Fujii Motoo，第二作者是清华的张兴教授，第三作者是上海第二工业大学的谢华清教授。 Phys Rev Lett. 2005 Aug 5;95(6):065502. Epub 2005 Aug 2. Measuring the thermal conductivity of a single carbon nanotube. Fujii M1, Zhang X, Xie H, Ago H, Takahashi K, Ikuta T, Abe H, Shimizu T. Abstract Although the thermal properties of millimeter-sized carbon nanotube mats and packed carbon nanofibers have been readily measured, measurements for a single nanotube are extremely difficult. Here, we report a novel method that can reliably measure the thermal conductivity of a single carbon nanotube using a suspended sample-attached T-type nanosensor. Our experimental results show that the thermal conductivity of a carbon nanotube at room temperature increases as its diameter decreases, and exceeds 2000 W/mK for a diameter of 9.8 nm. The temperature dependence of the thermal conductivity for a carbon nanotube with a diameter of 16.1 nm appears to have an asymptote near 320 K. The present method is, in principle, applicable to any kind of a single nanofiber, nanowire, and even single-walled carbon nanotube. |
2楼2015-10-06 13:10:20
宁静致远8639
铜虫 (初入文坛)
- 应助: 1 (幼儿园)
- 金币: 421.9
- 帖子: 19
- 在线: 15.4小时
- 虫号: 2595878
- 注册: 2013-08-14
- 性别: GG
- 专业: 碳素材料与超硬材料
4楼2015-10-07 10:20:32
5楼2015-10-08 08:45:52
