利用近前向散射图样识别单粒子形状的理论研究

张金碧; 丁蕾; 王颖萍; 郑海洋; 方黎

doi:10.7498/aps.64.054202

摘要

近前向光学散射图样可以用来表征颗粒物的形状.基于球形芽孢杆菌、枯草芽孢杆菌、类鼻疽伯克氏菌的回转长椭球模型, 采用离散偶极子近似方法, 通过模拟3个不同方位探测器接收的散射光强响应信号, 讨论了非球形生物气溶胶颗粒的形状对前向角分辨光强的影响.结合球形指数反演算法, 在一定取向条件下, 前向5°–20° 内角分辨散射光强具有识别长形颗粒物和非长形颗粒物的能力.该研究可以为颗粒物形态测量仪器设计以及快速检测有害生物气溶胶提供依据.

关键词:

光散射 /
生物气溶胶 /
形状 /
取向

Abstract

Particle shapes can be distinguished by the properties of near-forward optical scattering patterns of particles. The discrete dipole approximation method is used to calculate the light scattering patterns of Bacillus sphaericus, Bacillus subtilis, Burkholderia pseudomallei based on their prolate spheroid models. Shape dependence of forward angle-resolved light scattering intensity for nonspherical biological aerosol particles is discussed by simulating their light scattering response of three detectors located in different azimuthal range. Combined with sphericity index method, forward small angle (5°–20°) angle-resolved light scattering intensity has the ability to identify the elongated particles and non-elongated particles under certain orientation conditions. This study can help not only design particle morphology measurement instrument but also detect harmful biological aerosol rapidly.

Keywords:

作者及机构信息

1.
中国科学院安徽光学精密机械研究所, 环境光谱学研究室, 合肥 230031;

2.
中国科学院大学, 北京 100049

基金项目: 国家自然科学基金(批准号: 41275132)资助的课题.

Authors and contacts

1.
Laboratory of Environmental Spectroscopy, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Heifei 230031, China;

2.
University of Chinese Academy of Sciences, Beijing 100049, China

Funds: Project supported by the National Natural Science Foundation of China (Grant No. 41275132).

参考文献

[1]	Signorell R, Reid J P 2011 Fundamentals and Applications in Aerosol Spectroscopy (Boca Raton: Taylor and Francis Group) pp297-298
[2]	Kaye P H, Hirst E, Clark J M, Micheli F 1992 J. Aerosol Sci. 23 597
[3]	Hirst E, Kaye P H 1996 J. Geophys. Res. 101 19231
[4]	Kaye P H, Alexander-Buckley K, Hirst E, Saunders S, Clark, JM 1996 J. Geophys. Res. 101 19215
[5]	Auger J C, Aptowicz K B, Pinnick R G, Pan Y L, Chang R K 2007 Opt. Lett. 32 3358
[6]	Aptowicz K B, Pan Y L, Martin S D, Fernandez E, Chang R K, Pinnick R G 2013 J. Quant. Spectrosc. Radiat. Transf. 1 13
[7]	Jung J H, Lee J E 2013 Atmos. Environ. 81 609
[8]	Fan M, Chen L F, Li S S, Tao J H, Su L, Zou M M, Zhang Y, Han D 2012 Acta Phys. Sin. 61 204202 (in Chinese) [范萌, 陈良富, 李莘莘, 陶金花, 苏林, 邹铭敏, 张莹, 韩冬 2012 61 204202]
[9]	Rao R Z 1998 Acta Phys. Sin. 47 1790 (in Chinese) [饶瑞中 1998 47 1790]
[10]	Wang H H, Sun X M 2012 Chin.Phys.B 21 054204
[11]	Feng C X, Huang L H, Wang J B, Zhao Y K, Huang H J 2011 Chin. Opt. Lett. 9 092901
[12]	Shao S Y, Huang Y B, Rao R Z 2009 Acta Photon. Sin. 38 704 (in Chinese) [邵士勇, 黄印博, 饶瑞中 2009 光子学报 38 704]
[13]	Purcell E M, Pennypacker C R 1973 Atrophys. J. 186 705
[14]	Penttilä A, Zubko E, Lumme K, Muinonen K, Yurkin M A, Draine B, Rahola J, Hoekstra A G, Shkuratov Y 2007 J. Quant. Spectrosc. Radiat. Transf. 106 417
[15]	Sachweh B A, Dick W D, Mcmurry P H 1995 Aerosol Sci. Technol. 23 373
[16]	Barthel H, Sachweh B, Ebert F 1998 Meas. Sci. Technol. 9 210
[17]	Carrera M, Zandomeni R O, Fitzgibbon J, Sagripanti J L 2007 J.Appl.Microbiol. 102 303
[18]	Meselson M, Guillemin J, Hugh J M 2002 Emerg. Infect. Dis 8 225
[19]	Robinow C 1960 Bacteria 1 207
[20]	Tuminello P S, Arakawa E T, Khare B N, Wrobel J M, Querry M R, Milham M E 1997 Appl. Optics 36 2818
[21]	Hirst E, Kaye P H, Buckley K M, Saunders S J 1995 Part. Part. Syst. Charact. 12 3

施引文献

[1]	Signorell R, Reid J P 2011 Fundamentals and Applications in Aerosol Spectroscopy (Boca Raton: Taylor and Francis Group) pp297-298
[2]	Kaye P H, Hirst E, Clark J M, Micheli F 1992 J. Aerosol Sci. 23 597
[3]	Hirst E, Kaye P H 1996 J. Geophys. Res. 101 19231
[4]	Kaye P H, Alexander-Buckley K, Hirst E, Saunders S, Clark, JM 1996 J. Geophys. Res. 101 19215
[5]	Auger J C, Aptowicz K B, Pinnick R G, Pan Y L, Chang R K 2007 Opt. Lett. 32 3358
[6]	Aptowicz K B, Pan Y L, Martin S D, Fernandez E, Chang R K, Pinnick R G 2013 J. Quant. Spectrosc. Radiat. Transf. 1 13
[7]	Jung J H, Lee J E 2013 Atmos. Environ. 81 609
[8]	Fan M, Chen L F, Li S S, Tao J H, Su L, Zou M M, Zhang Y, Han D 2012 Acta Phys. Sin. 61 204202 (in Chinese) [范萌, 陈良富, 李莘莘, 陶金花, 苏林, 邹铭敏, 张莹, 韩冬 2012 61 204202]
[9]	Rao R Z 1998 Acta Phys. Sin. 47 1790 (in Chinese) [饶瑞中 1998 47 1790]
[10]	Wang H H, Sun X M 2012 Chin.Phys.B 21 054204
[11]	Feng C X, Huang L H, Wang J B, Zhao Y K, Huang H J 2011 Chin. Opt. Lett. 9 092901
[12]	Shao S Y, Huang Y B, Rao R Z 2009 Acta Photon. Sin. 38 704 (in Chinese) [邵士勇, 黄印博, 饶瑞中 2009 光子学报 38 704]
[13]	Purcell E M, Pennypacker C R 1973 Atrophys. J. 186 705
[14]	Penttilä A, Zubko E, Lumme K, Muinonen K, Yurkin M A, Draine B, Rahola J, Hoekstra A G, Shkuratov Y 2007 J. Quant. Spectrosc. Radiat. Transf. 106 417
[15]	Sachweh B A, Dick W D, Mcmurry P H 1995 Aerosol Sci. Technol. 23 373
[16]	Barthel H, Sachweh B, Ebert F 1998 Meas. Sci. Technol. 9 210
[17]	Carrera M, Zandomeni R O, Fitzgibbon J, Sagripanti J L 2007 J.Appl.Microbiol. 102 303
[18]	Meselson M, Guillemin J, Hugh J M 2002 Emerg. Infect. Dis 8 225
[19]	Robinow C 1960 Bacteria 1 207
[20]	Tuminello P S, Arakawa E T, Khare B N, Wrobel J M, Querry M R, Milham M E 1997 Appl. Optics 36 2818
[21]	Hirst E, Kaye P H, Buckley K M, Saunders S J 1995 Part. Part. Syst. Charact. 12 3

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