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Theoretical studies on bioaerosol particle size and shape measurement from spatial scattering prof iles

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Abstract

A method of clarifying bioaerosol particles is proposed based on T-matrix. Size and shape characterizations are simultaneously acquired for individual bioaerosol particles by analyzing the spatial distribution of scattered light. The particle size can be determined according to the scattering intensity, while shape information can be obtained through asymmetry factor (AF). The azimuthal distribution of the scattered light for spherical particles is symmetrical, whereas it is asymmetrical for non-spherical ones, and the asymmetry becomes intense with increasing asphericity. The calculated results denote that the 5o–10o scattering angle is an effective range to classify the bioaerosol particles that we are concerned of. The method is very useful in real-time environmental monitoring of particle sizes and shapes.

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所属栏目:Scattering

收稿日期:2011-03-22

录用日期:2011-04-04

网络出版日期:2011-06-16

作者单位    点击查看

冯春霞:Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, ChinaGraduate University of Chinese Academy of Sciences, Beijing 100049, China
黄立华:Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
王剑波:Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, ChinaGraduate University of Chinese Academy of Sciences, Beijing 100049, China
赵永凯:Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
黄惠杰:Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

联系人作者:联系作者(huanghuijie@siom.ac.cn)

备注:This work was supported by the Important National Science and Technology Specific Projects of China (No. 2008ZX10401) and the Shanghai Municipal Natural Science Foundation (No. 11ZR1441700).

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引用该论文

Chunxia Feng, Lihua Huang, Jianbo Wang, Yongkai Zhao, Huijie Huang, "Theoretical studies on bioaerosol particle size and shape measurement from spatial scattering prof iles," Chinese Optics Letters 9(9), 092901 (2011)

被引情况

【1】蔡舒窈,张佩,朱玲琳,谢承科,孙征宇,程伟林,赵永凯,黄惠杰. 基于色氨酸本征荧光测量的生物气溶胶检测技术研究. 光学学报, 2012, 32(5): 512009--1

【2】. Retrieval of spherical particle size distribution using ant colony optimization algorithm. Chinese Optics Letters, 2013, 11(11): 112901-112905

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