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光散射聚集速率测定中T矩阵方法的应用
Alternative TitleThe use of T-matrix method for determining coagulation rate of colloidal particles in light scattering measurement
米利; 周宏伟; 孙祉伟; 刘丽霞; 徐升华
Source Publication物理学报=Acta Physica Sinica
2013-07-05
Volume62Issue:13Pages:134704/1-134704/7
ISSN1000-3290
Abstract聚集速率是评估胶体体系特性及稳定性的关键参数, 静态光散射和动态光散射则是测量聚集速率的两个重要方法. 然而, 用静态光散射和动态光散射测量聚集速率时, 需要知道有关单粒子和双粒子聚集体光散射特性的数据.为此, 通常需要把动、静两种方法结合, 才能消去这个数据. 以前各种近似理论曾用来解决这个问题, 但因粒子尺寸和形状的限制, 结果并不理想. 而T 矩阵方法可以不受粒子大小和形状的限制计算其光散射特性. 本工作用T 矩阵方法直接计算静态光散射和动态光散射所必须的粒子散射特性, 并将该法得到的聚集速率与动静态光散射结合法得到的聚集速率进行了比较, 两者结果很接近. 本工作为简化静态光散射和动态光散射测量聚集速率, 扩展其应用范围开辟了新途径.
Other AbstractThe coagulation rate is an important parameter for colloids, which is very useful for evaluating the colloidal stability. Both static light scattering and dynamic light scattering are commonly used methods for measuring the coagulation rate. By using these methods, the light scattering properties of single particles and aggregates of two particles are needed. Therefore, one may need both the static and dynamic light scattering data to avoid the calculation of the relevant scattering properties. Usually, when only static or dynamic light scattering data are available, various approximations are used to solve the problems related to the light scattering properties of particles and aggregates. However, due to the limitation of size and shape of colloidal particles in these approximations, the results were not always satisfactory. Since the T-matrix method can be used to precisely calculate the characteristic of light scattering without approximation of particle size or shape, we use this method in the determination of coagulation rate in static or dynamic light scattering measurement in this study. The comparison of our results with those measured by simultaneous static and dynamic light scattering method confirms that the T-matrix method is suitable for the light scattering measurement of coagulation rate. Therefore, this study simplifies the coagulation rate measurement by light scattering methods and extends their applications.
Keywordt 矩阵 光散射法 聚集速率 T-matrix Light Scattering Coagulation Rate
Subject Area物理力学
DOI10.7498/aps.62.134704
URL查看原文
Indexed BySCI ; EI ; CSCD
Language中文
WOS IDWOS:000322566300051
WOS KeywordHETEROAGGREGATION RATE CONSTANTS ; TURBIDITY MEASUREMENT ; MICROSCOPIC APPROACH ; STABILITY
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
Funding Organization国家自然科学基金(批准号: 10972217, 11172302, 11032011) 和中国科学院创新工程(批准号: KJCX2-YW-L08) 资助的课题.
CSCD IDCSCD:4888279
DepartmentNML复杂流体
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/47370
Collection国家微重力实验室
Corresponding Author徐升华
Recommended Citation
GB/T 7714
米利,周宏伟,孙祉伟,等. 光散射聚集速率测定中T矩阵方法的应用[J]. 物理学报=Acta Physica Sinica,2013,62(13):134704/1-134704/7.
APA 米利,周宏伟,孙祉伟,刘丽霞,&徐升华.(2013).光散射聚集速率测定中T矩阵方法的应用.物理学报=Acta Physica Sinica,62(13),134704/1-134704/7.
MLA 米利,et al."光散射聚集速率测定中T矩阵方法的应用".物理学报=Acta Physica Sinica 62.13(2013):134704/1-134704/7.
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