散射角对相关光谱法纳米颗粒测量的影响  

Impact of Scattering Angle on Nano-particles Measurement Using Method of Correlation Spectroscopy

作　　者：赵军[1] 孔明[1] 李春燕[1] 

机构地区：[1]中国计量学院计量测试工程学院,杭州310018

出　　处：《光电工程》2010年第7期45-48,69,共5页Opto-Electronic Engineering

基　　金：国家自然科学基金资助项目(60908039)

摘　　要：研究散射角对相关光谱法纳米颗粒测量的影响,对相关光谱法纳米颗粒实验系统进行改造,实现不同的散射角下纳米颗粒的相关光谱法测量。实验采用30nm和200nm的混合颗粒群,按不同比例进行混合,在90°和165°散射角对混合颗粒群进行测量,并对此实验结果进行了理论分析,结果表明,在对单一颗粒群进行测量时,在两个角度都能实现颗粒的准确测量,而在混合颗粒群测量时,测量结果受两种颗粒群混合比影响,而165°散射角具有更好的测量结果,因此在对混合纳米颗粒群进行测量时,采用大的散射角有助于颗粒的反演。The impact of scattering angle on nano-particles measurement is studied by using the method of correlation spectroscopy.The system of nano-particles experiment using the method of correlation spectroscopy is reformed to carry out the measurement of nano-particles at different scattering angles.Particles of 30-nanometer and 200-nanometer were mixed in different proportions,which were measured at scattering angles of 90 degrees and 165 degrees.It shows that accurate measurements can be realized at the two angles for the single particle group.While for the mixed particle group,the experiment results are affected by the mixing ratio of two kinds of particles.Better measurement results were got at the scattering angle of 165 degrees.Therefore the usage of large scattering angle contributes to the inversion of particle size for the hybrid nano-particles size measurement.

关 键 词：相关光谱法 散射角 纳米颗粒 米氏散射 

分 类 号：O432.2[机械工程—光学工程]