Analysis for Extinction Capability of Carbon Nanofibers by Moment Method

Abstract

Carbon nanofibers is a new kind of electromagnetic wave absorbing materials and it is expected as a new kind of smoke interference agent. To study the scattering and extinction characteristics of carbon nanofibers, the electromagnetic scattering calculating model was established, and the induced current equation was solved by moment method, as well as the relationship between the infrared extinction cross section and the length of carbon nanofibers was analyzed and calculated based on MATLAB. The results show that when the conductivity of carbon nanofibers is large, the extinction cross section appears a series of resonant peaks along with the length change, and when the length of carbon nanofibers is equal to the first resonant length, the extinction cross section of unit volume will reach the maximum value, and a good extinction effect can be achieved at the same time. The contribution of scattering to extinction is enhanced with the increase of electrical conductivity.