光谱学与光谱分析, 2017, 37 (11): 3430, 网络出版: 2018-01-04   

生物材料红外波段消光性能分析

Infrared Extinction Performance of Biological Materials
作者单位
1 脉冲功率激光技术国家重点实验室(电子工程学院), 安徽 合肥 230037
2 电子制约技术安徽省重点实验室, 安徽 合肥 230037
摘要
对制备的三种消光材料真菌An0429孢子, 真菌Bb0919孢子以及真菌Cx0507孢子的红外波段消光性能进行了测试分析。 静态测试采用压片法得到三种生物材料的镜面反射光谱, 然后根据Krames-Kronig(K-K)关系对三种生物材料红外波段的复折射率进行了计算。 由Mie理论计算得到三种生物材料红外波段的静态质量消光系数, 并与几种无机非金属材料进行了对比。 搭建烟幕箱实验平台, 对三种生物材料3~5 μm波段动态质量消光系数进行了测试分析, 得到三种消光材料的动态质量消光系数分别为1.257, 1.065以及1.009 m2·g-1。 测试分析结果表明, 三种生物材料的红外波段消光性能优于常见的无机材料, 其生产周期短, 生产成本低, 生产过程无毒, 对环境友好等优点, 使得生物消光材料具有较好的应用前景。
Abstract
It has been a hotspot to looking for high performance electromagnetic attenuation material. At present, the conventional inorganic materials, such as aluminum foil, copper, graphite, have been widely used in electromagnetic attenuation field. However, there are certain restrictions on the use of inorganic materials, such as high cost of raw material, low generating efficiency, and environment unfriendly. Recently, considerable attention has been paid to microbial materials, which has the potential to solve the problems above. In this study, three biological materials, fungi An0429 spores, fungi Bb0919 spores and fungi Cx0507 spores were used to measure infrared extinction performance. They were subjected to specular reflection spectra measurements in the range of 4 000~400 cm-1 (2.5~25 μm) by squash method. The real (n) and imaginary (k) parts of the complex refractive index of biological materials were calculated by using Kramers-Kroning relation based on the measured data. The complex refractive index with real part n and imaginary part k in the infrared band satisfies the following conditions n≥1 and k≥0. The static mass extinction coefficient was calculated based on Mie theory. Compared with common inorganic materials, biological materials possess a good extinction performance. In the smoke box test, the transmittances of fungi An0429, fungi Bb0919 spores and fungi Cx0507 spores were 5.1%, 8.2% and 7.4%, the mass extinction coefficients were 1.257, 1.065 and 1.009 m2·g-1. These results showed that have higher extinction characteristics. In addition, biological microbial materials have other advantages, such as short growth cycle, low production cost, absence of toxic in the casting process, and environmental friendliness. Therefore, microbial materials have great potential in extinction applications.

李乐, 胡以华, 顾有林, 赵义正, 于磊, 黄宝锟. 生物材料红外波段消光性能分析[J]. 光谱学与光谱分析, 2017, 37(11): 3430. LI Le, HU Yi-hua, GU You-lin, ZHAO Yi-zheng, YU Lei, HUANG Bao-kun. Infrared Extinction Performance of Biological Materials[J]. Spectroscopy and Spectral Analysis, 2017, 37(11): 3430.

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