碳纳米管8～12 GHz 电磁波衰减实验研究

陈仁松; 何彬; 王红霞

碳纳米管8～12 GHz 电磁波衰减实验研究

1.
第二炮兵工程学院102 教研室, 西安 710025;
2.
第二炮兵工程学院物理教研室, 西安 710025

基金项目: 国防预研基金(51400010504JB4705)

详细信息

通讯作者:
何彬,教授,主要从事核辐射防护等方面研究 E-mail:hebinep@163.com

中图分类号: TB32
计量
- 文章访问数: 1625
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- 被引次数: 0
出版历程
- 收稿日期: 2006-06-23
- 修回日期: 2006-11-02
- 刊出日期: 2007-06-15

Experimental studies on electromagnetic-wave attenuationof carbon nanotubes at 8～12 GHz

1.
The 102 Staff Room, The Second Artillery Engineering Institute, Xipan 710025, China;
2.
The Physics Staff Room, The Second Artillery Engineering Institute, Xipan 710025, China

摘要

摘要: 用电磁波穿透方法实验研究了长度为2μm 和15μm , 直径分别为30 、60 和100 nm 的6 种碳纳米管8～12 GHz 电磁波衰减特性。结果表明, 直径为30 nm 时, 长度为15μm 的碳纳米管的电磁波衰减能力大于长度2μm的; 直径分别为60 nm 和100 nm 时, 长度为2μm 的碳纳米管的电磁波衰减能力均大于长度为15μm 的。在长度相同的情况下, 不同直径碳纳米管的电磁波衰减能力为: 60 nm > 100 nm > 30 nm。6 种碳纳米管的电磁波衰减能力为: Ф60 nm ×2μm > Ф60 nm ×15μm > Ф100 nm ×2μm > Ф100 nm ×15μm > Ф30 nm ×15μm > Ф30 nm ×2μm。实验还发现长径比较小的碳纳米管的电磁波衰减能力明显好于长径比较大的磁纳米管的电磁波衰减能力;但碳纳米管长径比与电磁波衰减能力之间并不存在简单的线性关系。
- 碳纳米管 /
- 电磁波穿透法 /
- 电磁波吸收 /
- 电磁波衰减
Abstract: Based on the elect romagnetic-wave penet ration method , the elect romagnetic-wave attenuation abilities ofsix kinds of carbon nanotubes (CNTs) were studied in experiment at 8～12 GHz , whose diameters were 30 nm ,60 nm and 100 nm , and lengths were 2μm and 15μm. The results show that with the same diameter of 30 nm , theelect romagnetic2wave attenuation ability of CNTs with the length of 15μm is better than that with the length of2μm. With the same diameter of 60 nm , the absorption ability of CNTs with the length of 2μm is bet ter than thatwith the length of 15μm. With the same diameter of 100 nm , the elect romagnetic2wave attenuation ability of CNTswith the length of 2μm is better than that with the length of 15μm. The order of elect romagnetic2wave at tenuationabilities of CNTs with the same length is that Ф60 nm > Ф100 nm > Ф30 nm. At 8～12 GHz , the elect romagnetic2wave attenuation order of the 6 kinds of CNTs is Ф60 nm ×2μm > Ф60 nm ×15μm > Ф100 nm ×2μm > Ф100 nm ×15μm > Ф30 nm ×15μm > Ф30 nm ×2μm. Based on the experiment s , the elect romagnetic-wave at tenuation abilityof CNTs with smaller slenderness ratio is better than that with larger slenderness ratio. However , liner relationshipdoesnpt exist between the absorption ability and slenderness ratio for CNTs.
- carbon nanotube /
- elect romagnetic-wave penet ration method /
- elect romagnetic-wave absorption /
- elect romagnetic-wave attenuation