光子学报, 2011, 40 (11): 1652, 网络出版: 2011-12-12   

用于亚微米颗粒测量的后向散射光谱法

Backscattering Spectroscopy for Sizing Spherical Submicron Particles
作者单位
上海理工大学 光电信息与计算机工程学院,上海 200093
摘要
针对后向散射光谱粒径测量法对亚微米颗粒测量准确度较差的问题,提出了一种采用紫外光作为光源的测量方法.通过快速傅里叶变换计算了粒径为0.25~1 μm的聚苯乙烯亚微米颗粒的后向散射频谱,将频谱峰值对应的频率值与相应的颗粒粒径进行线性回归,各粒径值相对于回归直线的平均误差为±0.02 μm. 结果表明,本文提出的300~400 nm的紫外光适用于测量0.25~1 μm的亚微米颗粒,相比目前国外最新的采用可见光谱或红外光谱的方法准确度提高了一个数量级,同时该方法也适用于测量双峰分布亚微米颗粒系.
Abstract
Optical single backscattering spectroscopy can be used for sizing spherical particles suspended in water, but the accuracy for sizing submicron particles cannot be satisfied. To improve the accuracy, the backscattering coefficients between 300~400 nm spectral region is applied to the determination of diameter of calibrated spherical latex polystyrene particles. Through Mie calculations, fast Fourier transform (FFT) and linear regression, the diameters of particles covering the range between 0.25 μm and 1 μm for monomodal particles are determined. The linear regression average error is ±0.02 μm, which is reduced in more than an order of magnitude compared to the data given by the preference. The method can also be applied to bimodal samples.
参考文献

[1] 孙晓刚,唐红,戴景民.可见红外波段光全散射法颗粒粒径测量范围的研究[J].光谱学与光谱分析,2008,28(12):27932798.

    SUN Xiaogang, TANG Hong, DAI Jingmin. Research on the measurement range of particle size with total light scattering method in VisIR region[J]. Spectroscopy and Spectral Analysis, 2008, 28(12):27932798.

[2] 杨依枫,杨晖,郑刚,等.衍射散射式颗粒粒度测量法的研究新进展[J].光学技术,2011,37(1):1924.

    YANG Yifeng, YANG Hui, ZHENG Gang, et al. Progress of particle size measurement by laser diffraction and scattering[J]. Optical Technique, 2011, 37(1): 1924.

[3] NEFEDOV A P, PETROV O F, VAULINA O S, et al. Application of a forwardanglescattering transmissometer for simultaneous measurements of particle size and number density in an optically dense medium[J]. Applied Optics, 1998, 37(9): 16821689.

[4] YANG Hui, ZHENG Gang, DAI Shuguang, et al. Dynamic light backscattering with polarization gating and Fourier spatial filter for particle sizing in concentrated suspension[J]. Optica Applicata, 2010, 40(4): 819826.

[5] YANG Hui, ZHENG Gang, LI Mengchao, et al. A discussion of noise in dynamic light scattering for particle sizing[J]. Part. Part. Syst. Charact., 2009, 25(56): 406413.

[6] 杨晖,郑刚,李梦超,等.动态光散射系统最佳光接收孔径比研究[J].光子学报,2008,37(8):15391543.

    YANG Hui, ZHENG Gang, LI Mengchao, et al. The study of best receiver aperture ratio in dynamic light scattering system[J]. Acta Photonica Sinica, 2008, 37(8): 15391543.

[7] 王雅静,郑刚,申晋,等.双峰分布的超细颗粒动态光散射信号模拟及准确度分析[J].光子学报,2009,38(9):23372342.

    WANG Yajing, ZHENG Gang, SHEN Jin, et al. Computer simulation of bimodal distribution ultrafine particles dynamic light scattering and precision analysis[J]. Acta Photonica Sinica, 2009, 38(9): 23372342.

[8] 杨晖,郑刚,李孟超,等.高浓度超细颗粒的后向光子相关光谱测量技术研究[J].光子学报,2009,38(1):179183.

    YANG Hui, ZHENG Gang, LI Mengchao, et al. Back scattering PCS for particle sizing in high concentrated suspension[J]. Acta Photonica Sinica, 2009, 38(1):179183.

[9] CANPOLAT M, MOURANT J R. Particle size analysis of turbid media with a single optical fiber in contact with the medium to deliver and detect white light[J]. Applied Optics, 2001, 40(22): 37923799.

[10] AMELINK A, BARD M P L, BURGERS S A, et al. Singlescattering spectroscopy for the endoscopic analysis of particle size in superficial layers of turbid media[J]. Applied Optics, 2003, 42(19): 40954101.

[11] VIDELA F A, SCHINCA D, SCAFFARDI L B. Sizing particles by backscattering spectroscopy and fourier analysis[J]. Optical Engineering, 2006, 45(4): 048001.

[12] SCAFFARDI L B, VIDELA F A, SCHINCA D C. Visible and nearinfrared backscattering spectroscopy for sizing spherical microparticles[J]. Applied Optics, 2007, 46(1): 6775.

[13] CHEN K, KROMIN A, ULMER M P, et al. Nanoparticle sizing with a resolution beyond the diffraction limit using UV light scattering spectroscopy[J]. Optics Communications, 2003, 228(13): 17.

[14] BOHREN C, HUFFMAN D. Absorption and scattering of light by small particles[M]. New York: John Wiley and Sons, 1983: 120123.

[15] SCAFFARDI L B, TOCHO J O, YEBRIN L L, et al. Sizing particles used in the leather industry by light scattering[J]. Optical Engineering, 1996, 35(1):5256.

杨依枫, 杨晖, 郑刚, 刘国斌, 邢世通. 用于亚微米颗粒测量的后向散射光谱法[J]. 光子学报, 2011, 40(11): 1652. YANG Yifeng, YANG Hui, ZHENG Gang, LIU Guobin, XING Shitong. Backscattering Spectroscopy for Sizing Spherical Submicron Particles[J]. ACTA PHOTONICA SINICA, 2011, 40(11): 1652.

本文已被 5 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!