| MWNTs和MWNTs/云母复合物的太赫兹光谱研究 |
| |
| 引用本文： | 冯修军,黄婉霞. MWNTs和MWNTs/云母复合物的太赫兹光谱研究[J]. 传感技术学报, 2010, 23(4): 453-457. DOI: 10.3969/j.issn.1004-1699.2010.04.001 |
| |
| 作者姓名： | 冯修军 黄婉霞 |
| |
| 作者单位： | 四川大学材料科学与工程学院,成都,610064;电子科技大学物理电子学院太赫兹研究中心,成都,610054 |
| |
| 摘 要： | 文章采用THZ-TDS技术分别研究了室温大气环境下多壁碳纳米管(MWNTs)和MWNTs/云母复合物在0.2～1.75THz波段的吸收谱、折射率谱、复介电常数和屏蔽效能。结果表明两种样品在此波段有明显的特征吸收峰,且吸收谱存在显著差异,两种样品的平均折射率分别为4.27(MWNTs)和1.81(MWNTs/云母复合物)。随着频率的增加,MWNTs的折射率先增大后减小,而MWNTs/云母复合物的折射率减小,呈现反常色散现象。MWNTs在0.25～1.5THz的范围内屏蔽效能达到30dB以上,而MWNTs/云母复合物在0.2～1.75THz的范围内屏蔽效能小于30dB。
|
| 关 键 词： | 太赫兹时域光谱技术 MWNTs/云母复合物 吸收系数 复介电常数 屏蔽效能 |
Terahertz Spectroscopic Investigation of MWNTs and MWNTs/mica |
| |
| FENG Xiujun,HUANG Wanxia,LUO Yi,ZHANG Jian,ZHANG Yaxin. Terahertz Spectroscopic Investigation of MWNTs and MWNTs/mica[J]. Journal of Transduction Technology, 2010, 23(4): 453-457. DOI: 10.3969/j.issn.1004-1699.2010.04.001 |
| |
| Authors: | FENG Xiujun HUANG Wanxia LUO Yi ZHANG Jian ZHANG Yaxin |
| |
| Affiliation: | 1.College of Materials Science and Engineering;Sichuan University;Chengdu 610064;China;2.Terahertz Research Center;School of Physical Electronics;University of Electronic Science and Technology of China;Chengdu 610054;China |
| |
| Abstract: | Terahertz time-domain spectroscopy(THz-TDS)was used to measure the absorbance,refractive index,dielectric constants and shielding effect of MWNTs and MWNTs/mica in the frequency range of 0.2~1.75 THz at room temperature. The results indicate that two samples have distinct absorption features,which have significance level in such frequency range. The average refractive indices of two samples are 4.27(for MWNTs) and 1.81(for MWNTs/mica) respectively. With frequency increasing,the refractive index of MWNTs fir... |
| |
| Keywords: | terahertz time-domain spectroscopy MWNTs/mica absorbance complex dielectric constant shielding effect |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《传感技术学报》浏览原始摘要信息 |
|
点击此处可从《传感技术学报》下载全文 |
