摘要
纳米碳纤维是一种新型吸波材料。为探讨烟幕粒子的红外消光特性,利用矩量法建立了纳米碳纤维感应电流和散射场的计算模型,在此基础上得出了纳米碳纤维吸收、散射和消光截面的计算表达式。通过Matlab编程计算分析了纳米碳纤维红外消光截面与电导率的关系。结果表明,纳米碳纤维红外消光特性与电导率密切相关,随着电导率的增加,消光截面迅速增加,当波长大于纤维本身长度时,消光截面随电导率的变化出现峰值,峰值电导率与波长有关。
Carbon nanofibers are a new kind of materials with good capability of electromagnetic wave absorption.The calculating model of electric current distributing and scattered electric field for carbon nanofibers is established by method of moment.The expression of absorption cross section,scattering cross section and extinction cross section are got.The relationship between infrared extinction cross section of carbon nanofiber and electrical conductivity is analyzed and calculated based on Matlab.The results show that the infrared extinction cross section increases with electrical conductivity increase,and peak value appeares when wavelength is longer than the length of carbon nanofiber.The electrical conductivity on peak value is related to wavelength.
出处
《光学技术》
CAS
CSCD
北大核心
2008年第S1期272-274,共3页
Optical Technique
基金
国防预研基金资助项目(51400010504JB4705)
关键词
红外消光
消光截面
纳米碳纤维
散射
吸收
矩量法
infrared extinction
extinction cross section
carbon nanofibers
scattering
absorption
method of moment
