SAS PDF: pair distribution function analysis of nanoparticle assemblies from small-angle scattering data
SAS PDF: pair distribution function analysis of nanoparticle assemblies from small-angle scattering data
复制标题
SAS PDF：根据小角度散射数据对纳米颗粒组件进行对分布函数分析
DOI：
10.1107/s1600576720004628
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发表时间：
2020
影响因子：
6.1
通讯作者：
Billinge, Simon J.
中科院分区：
文献类型：
--
作者：
Liu, Chia-Hao;Janke, Eric M.;Li, Ruipen;Juhás, Pavol;Gang, Oleg;Talapin, Dmitri V.;Billinge, Simon J.
介绍了一种表征纳米粒子组装体（NPAs）结构的方法sasPDF。该方法是一个扩展的原子对分布函数（PDF）分析的小角散射（SAS）制度。本文还介绍了用于计算SAS数据PDF的PDFgetS3软件包。的sasPDF方法的应用程序，以表征具有代表性的NPA样品的结构与不同层次的结构顺序，然后证明。的sasPDF方法定量产生的信息，如有序NPA样品的结构，无序和微晶尺寸。该方法也被用来成功地从一个无序的NPA样品的数据建模。的sasPDF方法提供了更多的定量表征的NPA结构的广泛的一类样品的可能性。
sasPDF, a method for characterizing the structure of nanoparticle assemblies (NPAs), is presented. The method is an extension of the atomic pair distribution function (PDF) analysis to the small-angle scattering (SAS) regime. The PDFgetS3 software package for computing the PDF from SAS data is also presented. An application of the sasPDF method to characterize structures of representative NPA samples with different levels of structural order is then demonstrated. The sasPDF method quantitatively yields information such as structure, disorder and crystallite sizes of ordered NPA samples. The method was also used to successfully model the data from a disordered NPA sample. The sasPDF method offers the possibility of more quantitative characterizations of NPA structures for a wide class of samples.