The effect of carbon nanofibers conductivity on the extinction properties to millimeter wave

2018 International Conference on Advanced Materials, Intelligent Manufacturing and Automation

材料科学;机械制造;运输工程

Wang, Hongxia^1 ; Hou, Weijun^1 ; Liu, Daizhi^1 ; Zhang, Qinghua^1 ; Zhu, Haifei^1

Xi'An Research Inst. of Hi-Tech, Hongqing Town, Xi'an

710025, China^1

关键词: Calculation results;    Electrical conductivity;    Extinction cross section;    Extinction properties;    Mass extinction coefficients;    Millimeter wave frequencies;    Quasi-one dimensional;    Ratio of length to diameters;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/382/2/022039/pdf
DOI  :  10.1088/1757-899X/382/2/022039

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Carbon nanofibers is a new type of quasi one-dimensional carbon materials that has been paid more attention in recent years, and it has good conductivity which is related to the production method and process. To study the extinction properties of carbon nanofibers as interference material to millimeter wave, the integral equation of the carbon nanofibers inductive current is established based on the theory of electromagnetic field and solved by using of the Moment Method, and the formula of extinction cross-section is obtained. The effect of carbon nanofibers conductivity on the extinction capability to millimeter wave is analyzed via programming by Matlab, and the results show that the mass extinction coefficient of carbon nanofibers is closely related to its conductivity. For the millimeter wave with a certain frequency, the greater the ratio of length-to-diameter of carbon nanofibers is, the bigger the optimum electrical conductivity is. And for the carbon nanofibers with a certain size, the higher the millimeter wave frequency is, the bigger the optimum electrical conductivity is. The calculation results provide the theoretical basis for carbon nanofibers to be used as interference material to millimeter wave.