摘要
针对光子相关光谱法不能测量高浓度纳米颗粒粒径和双光束互相关测量法装置结构过于复杂等问题,提出了一种基于范西特-泽尼克定理的单光束互相关法。首先分析了传统双光束互相关法存在的问题,然后根据范西特-泽尼克定理建立了单光束互相关测量法的模型,设计完成了单光束互相关颗粒粒度测量装置,最后对各种浓度不同粒径的颗粒进行了测量。实验证明,单光束互相关法能有效抑制多重散射的影响,适用于测量高浓度纳米颗粒粒径。
As photon correlation spectroscopy （PCS） cannot measure the high-concentration nanoparticle diameter,and cross-correlation dynamic light scattering （CCDLS）has too much complex experimental setup and other problems,a new method is proposed based on the Van Cittert-Zernike theorem,called one-beam cross-correlation （OBCC）. First,the problems of traditional CCDLS are analyzed. Then,on the basis of the Van Cittert-Zernike theorem,a new experimental setup is designed. At last,the particle diameter with different concentration and different diameter is studied. The study result shows that the influence of multiple scattering can be effectively suppressed,and OBCC can be used to measure the high-concentration nanoparticle diameter.
出处
《光学技术》
CAS
CSCD
北大核心
2010年第6期871-875,共5页
Optical Technique
基金
国家自然科学基金(61007002)
上海市科委纳米专项基金(0852nm06700)
上海市高校优秀青年教师基金(slg09007)
上海理工大学博士科研启动基金
光电学院教师创新能力建设项目(GDCX-Y-106)
关键词
互相关
动态光散射
颗粒测量
cross-correlation
dynamic light scattering
particle sizing
