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How to optimize the absorbing microwave properties by using the parameters of carbon nanotube composite coating is a hotspot in the study of electromagnetic shielding. However, the study on the influence of coating parameters on absorbing microwave properties mainly stays in the stage of experimental study, and the influence of structure parameters of carbon nanotube on absorbing microwave properties has not been reported yet. Therefore, it is significant to study the method of optimizing the absorbing microwave properties of materials through micro-structure of the carbon nanotube composite coating. Based on an equivalent circuit of multi-wall carbon nanotubes, using the relationship between the parameters of each element in the equivalent circuit to study the mechanism of carbon nanotube loss microwave, an expression of absorbing microwave properties about carbon nanotube structure parameters is derived. According to the expression, the microwave reflection ratio of coating is calculated and simulated by Matlab software, which is affected by the length, diameter and coating thickness of carbon nanotube and the number of carbon nanotubes. The simulation result shows that the variation of reflection ratio curve of coating with the number of carbon nanotubes is consistent with the experimental results. The number of carbon nanotubes and the thickness of coating are the vital parameters, which influence the absorption intensity and absorption position, while the diameter and length of carbon nanotube are the vital parameters, which influence the absorption intensity.
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Keywords:
- equivalent circuit /
- parameters of coating /
- absorbing properties /
- reflection ratio
[1] Pan R Q 2011 Chin. Phys. Lett. 28 066104
[2] Moradi A 2013 Chin. Phys. B 22 064201
[3] Xu Y G, Zhang D Y, Cai J, Yuan L, Zhang W Q 2012 J. Mater. Sci. Technol. 28 34
[4] Zhao D L, Zeng X W, Shen Z M 2005 Acta Phys. Sin. 54 3878 (in Chinese) [赵东林, 曾宪伟, 沈曾民 2005 54 3878]
[5] Wang J, Li H F, Huang Y H, Yu H B, Zhang Y 2010 Acta Phys. Sin. 59 1946 (in Chinese) [王建, 李会峰, 黄运华, 余海波, 张跃 2010 59 1946]
[6] Roberts J A, Imholt T, Ye Z, Dyke C A, Price D W, Tour J M 2004 J. Appl. Phys. 95 4352
[7] Fan Z J, Luo G H, Zhang Z F 2006 Mater. Sci. Eng. B 132 85
[8] Xu M H, Qi X S, Zhong W, Ye X J, Deng Y, Au C T, Jin C Q, Yang Z X, Du Y W 2009 Chin. Phys. Lett. 26 116103
[9] Sun H G, Zhou Z X, Qin R H, Yuan C X, Zhang H F, Lu Y 2007 J. Harbin Inst. Technol. 39 474 (in Chinese) [孙洪国, 周忠祥, 秦汝虎, 袁承勋, 张海丰, 卢颖 2007 哈尔滨工业大学学报 39 474]
[10] Hua S C, Wang H G, Wang L Y, Liu G, Zhao R X, Yao J X 2009 Acta Phys. Sin. 58 6534 (in Chinese) [华绍春, 王汉功, 汪刘应, 刘顾, 赵瑞星, 姚建勋 2009 58 6534]
[11] Zhu H, Lin H, Guo H F, Yu L F 2007 Mater. Sci. Eng. B 138 101
[12] Wang Z P, Zhang Z H, Qin S M, Wang L H, Wang X X 2008 Mater. Des. 29 1777
[13] Peng Z H, Peng J C, Peng Y F, Wang J Y 2008 Chin. Sci. Bull. 52 3497
[14] Li H, Yin W Y, Banerjee K, Mao T F 2008 IEEE Trans. Electron Dev. 55 1328
[15] Zhang K L, Tian B, Zhu X S, Wang F, Wei J 2012 Nanoscale Res. Lett. 7 138
[16] Han G Z, Chen M D, Guo P S, Li S X 2007 South China Univ. Technol. 35 52 (in Chinese) [韩光泽, 陈明东, 郭平生, 李绍新 2007 华南理工大学学报 35 52]
[17] Prasad A, Prasad K 2007 Physica B 396 132
[18] Peng Z H 2010 Ph. D. Dissertation (Changsha: Hunan University) (in Chinese) [彭志华 2010 博士学位论文 (长沙: 湖南大学)]
[19] Yellampalli S 2011 Carbon Nanotubes Synthesis Characterization Applications (Croatia: InTech Press) pp265–278
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[1] Pan R Q 2011 Chin. Phys. Lett. 28 066104
[2] Moradi A 2013 Chin. Phys. B 22 064201
[3] Xu Y G, Zhang D Y, Cai J, Yuan L, Zhang W Q 2012 J. Mater. Sci. Technol. 28 34
[4] Zhao D L, Zeng X W, Shen Z M 2005 Acta Phys. Sin. 54 3878 (in Chinese) [赵东林, 曾宪伟, 沈曾民 2005 54 3878]
[5] Wang J, Li H F, Huang Y H, Yu H B, Zhang Y 2010 Acta Phys. Sin. 59 1946 (in Chinese) [王建, 李会峰, 黄运华, 余海波, 张跃 2010 59 1946]
[6] Roberts J A, Imholt T, Ye Z, Dyke C A, Price D W, Tour J M 2004 J. Appl. Phys. 95 4352
[7] Fan Z J, Luo G H, Zhang Z F 2006 Mater. Sci. Eng. B 132 85
[8] Xu M H, Qi X S, Zhong W, Ye X J, Deng Y, Au C T, Jin C Q, Yang Z X, Du Y W 2009 Chin. Phys. Lett. 26 116103
[9] Sun H G, Zhou Z X, Qin R H, Yuan C X, Zhang H F, Lu Y 2007 J. Harbin Inst. Technol. 39 474 (in Chinese) [孙洪国, 周忠祥, 秦汝虎, 袁承勋, 张海丰, 卢颖 2007 哈尔滨工业大学学报 39 474]
[10] Hua S C, Wang H G, Wang L Y, Liu G, Zhao R X, Yao J X 2009 Acta Phys. Sin. 58 6534 (in Chinese) [华绍春, 王汉功, 汪刘应, 刘顾, 赵瑞星, 姚建勋 2009 58 6534]
[11] Zhu H, Lin H, Guo H F, Yu L F 2007 Mater. Sci. Eng. B 138 101
[12] Wang Z P, Zhang Z H, Qin S M, Wang L H, Wang X X 2008 Mater. Des. 29 1777
[13] Peng Z H, Peng J C, Peng Y F, Wang J Y 2008 Chin. Sci. Bull. 52 3497
[14] Li H, Yin W Y, Banerjee K, Mao T F 2008 IEEE Trans. Electron Dev. 55 1328
[15] Zhang K L, Tian B, Zhu X S, Wang F, Wei J 2012 Nanoscale Res. Lett. 7 138
[16] Han G Z, Chen M D, Guo P S, Li S X 2007 South China Univ. Technol. 35 52 (in Chinese) [韩光泽, 陈明东, 郭平生, 李绍新 2007 华南理工大学学报 35 52]
[17] Prasad A, Prasad K 2007 Physica B 396 132
[18] Peng Z H 2010 Ph. D. Dissertation (Changsha: Hunan University) (in Chinese) [彭志华 2010 博士学位论文 (长沙: 湖南大学)]
[19] Yellampalli S 2011 Carbon Nanotubes Synthesis Characterization Applications (Croatia: InTech Press) pp265–278
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