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1. 上海理工大学 光电信息与计算机工程学院,上海 200093
2. 山东理工大学 电气与电子工程学院,山东 淄博 255049
收稿日期:2009-12-08,
修回日期:2010-01-15,
网络出版日期:2010-09-29,
纸质出版日期:2010-09-20
移动端阅览
杨 晖, 郑 刚, 王雅静. 用动态光散射现代谱估计法测量纳米颗粒[J]. 光学精密工程, 2010,18(9): 1996-2001
YANG Hui, ZHENG Gang, WANG Ya-jing. Measurement of nano-particles by dynamic light scattering based on spectral estimation[J]. 光学精密工程, 2010,18(9): 1996-2001
杨 晖, 郑 刚, 王雅静. 用动态光散射现代谱估计法测量纳米颗粒[J]. 光学精密工程, 2010,18(9): 1996-2001 DOI: 10.3788/OPE.20101809.1996.
YANG Hui, ZHENG Gang, WANG Ya-jing. Measurement of nano-particles by dynamic light scattering based on spectral estimation[J]. 光学精密工程, 2010,18(9): 1996-2001 DOI: 10.3788/OPE.20101809.1996.
为了解决目前动态光散射软件信号分析法采用的自相关和功率谱估计存在分辨率和方差较低
以及能谱泄漏问题
提出了基于现代功率谱估计的动态光散射信号分析法。对该系统所采用的现代功率谱估计算法和测量系统进行了研究。首先
介绍了动态光散射测量法涉及的光子相关光谱理论和散射光谱估计理论。接着
描述了基于现代功率谱估计的动态散射光谱法
特别是其中阶数
p
的计算方法。然后
介绍了测量系统
包括硬件部分的光学系统和信号采集处理系统
软件部分的系统开发流程。最后
对粒径分别为30、50、100 nm的乳胶球标准颗粒溶液(透光率为96%)进行了实验。实验结果表明:现代谱估计分析法的测量均值误差和重复性误差的平均值分别为1.88%和1.62%
满足国标要求的均值误差和重复性误差
<
2%。
A new dynamic light scattering analysis method based on modern power spectral estimation was proposed to resolve problems on lower resolution and variance
and power spectrum leakage in the current dynamic light scattering software.The modern power spectrum estimation algorithm and measurement system were studied. Firstly
the photon correlation spectroscopic theory and the scattering spectrum estimation of dynamic light scattering measurement were introduced. Then
the dynamic scattering spectrum based on modern power spectrum estimation was descripted in detail
and the order of
p
was calculated particularly. Furthermore
the measurement system was described
in which the hardware components included optical systems and signal processing system and the software showed the development process. Finally
a experiment was carried out on the latex particle sample solution with the particle diameters of 30
50
100 nm and solution transmission of 96%. The results show that the average values of the measurement error and repeatability error are 1.88% and 1.62%
respectively
which can achieve the national standard that the measurement and repeatability errors should be less than 2%
respectively.
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申晋, 郑刚, 李孟超, 等. PCS 颗粒测量技术中软件相关方法的研究
. 仪器仪表学报, 2003,24(6):585-588. SHEN J, ZHENG G, LI M CH, et al.. The study on the estimation of autocorrelation function in PCS particle sizing technique
. Chinese Journal of Scientific Instrument, 2003,24(6):585-588.
张卓勇, 贾琼, 刘思东, 等. 电感耦合等离子体原子发射光谱的现代谱估计
. 光谱学与光谱分析, 2000,20(3):343-346. ZHANG ZH Y,JIA Q, LIU S D, et al.. Spect ro scopy and Spect ralA nalysis
. Modern Spectral Estimation of ICP-AES, 2000,20(3):343-346.
张文博, 范大鹏, 张智永, 等. 光电稳定跟踪装置中微机电陀螺应用研究
. 光学 精密工程,2006,14(4):689-696. ZHANG W B,FAN D P,ZHANG ZH Y,et al.. Research on application of MEMS gyro to servo system for E-O stabilization and tracking devices
. Opt. Precision Eng., 2006,14(4):689-696. (in Chinese)
何新, 贾红辉, 常胜利, 等. 多次散射情况下非视线光传输的模拟
. 光学 精密工程,2009,17(2):246-250. HE X, JIA H H, CHANG SH L, et al.. Simulation of non-line-of-sight light propagation for multiple-scattering instance
. Opt. Precision Eng., 2009,17(2):246-250. (in Chinese)
TAN X Y, ZHOU X ZH, JIANG Y M, et al.. Comparative analysis of Sigma Delta modulation and pulse code modulation in micro-accelerometer
. Opt. Precision Eng., 2009,17(6):1228-1232.
YANG H, ZHENG G, LI M CH. The optimal detector aperture in photon correlation spectroscopy experiments
. Lasers in Engineering, 2007,17(1-2):75-82.
YANG H, ZHENG G, LI M CH. A new cheaper Dynamic Light Scattering particle sizing method using Counting Board
. Lasers in Engineering, 2008,18(3-4):153-161.
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