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Chin. Phys. B, 2019, Vol. 28(3): 034201    DOI: 10.1088/1674-1056/28/3/034201

Analysis of optical properties of bio-smoke materials in the 0.25-14 μm band

Xinying Zhao(赵欣颖)1,2, Yihua Hu(胡以华)1,2, Youlin Gu(顾有林)1,2, Xi Chen(陈曦)1,2, Xinyu Wang(王新宇)1,2, Peng Wang(王鹏)3, Xiao Dong(董骁)1,2
1 State Key Laboratory of Pulsed Power Laser Technology, National University of Defense Technology, Hefei 230037, China;
2 Anhui Province Key Laboratory of Electronic Restriction, National University of Defense Technology, Hefei 230037, China;
3 Key Laboratory of Ion Beam Bioengineering, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230001, China

At present, research into optical properties of bio-smoke materials mostly concentrates on single band or single germplasm. Herein, we measured the spectral reflectance of three eukaryotic bio-smoke materials and three prokaryotic bio-smoke materials in the waveband from 0.25 μm to 14 μm. Based on the Kramers-Kroning algorithm, the complex refractive index m(λ) was calculated and the Fourier-transform infrared (FTIR) spectra of materials were analyzed. The results show that n(λ) of bio-smoke materials varies between 1.1-2, and n(λ) values in the visible light to near-infrared wavebands are significantly larger than those in other wavebands. The k(λ) of bio-smoke materials varies between 0-0.4. At 6-6.5 μm, k(λ) of prokaryotic materials is 3 times that of eukaryotic materials, which is caused by C=O stretching vibration of amide I and C-N stretching vibration of amide Ⅱ in proteins. At 2.5-3 μm and 9.75 μm, k(λ) values of eukaryotic bio-smoke materials are nearly 2 times that of prokaryotic ones. The absorption peak at 2.5-3 μm is mainly triggered by C-H stretching vibration in lipid and O-H stretching vibration in bound water. The absorption peak at 9.75 μm is mainly caused by symmetric stretching vibration of PO2- in nucleic acids.

Keywords:  bio-smoke materials      complex refractive index      eukaryotic      prokaryotic  
Received:  14 December 2018      Revised:  09 January 2019      Published:  05 March 2019
PACS:  28.41.Qb (Structural and shielding materials)  
  42.50.Wk (Mechanical effects of light on material media, microstructures and particles)  
  42.70.-a (Optical materials)  

Project supported by the National Natural Science Foundation of China (Grant Nos. 61271353 and 60908033) and the Natural Science Foundation of Anhui Province, China (Grant No. 1408085MKL47).

Corresponding Authors:  Yihua Hu     E-mail:

Cite this article: 

Xinying Zhao(赵欣颖), Yihua Hu(胡以华), Youlin Gu(顾有林), Xi Chen(陈曦), Xinyu Wang(王新宇), Peng Wang(王鹏), Xiao Dong(董骁) Analysis of optical properties of bio-smoke materials in the 0.25-14 μm band 2019 Chin. Phys. B 28 034201

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