Component Particle Structure in Heterogeneous Disordered Ensembles Extracted from High-Throughput Fluctuation X-Ray Scattering

Gang Chen, Peter H. Zwart, and Dongsheng Li

Phys. Rev. Lett. 110, 195501 – Published 6 May 2013

Abstract

The ring angular correlation function is a characteristic feature determined by the particle structure. Averaging over a large number of ring angular correlation functions calculated from x-ray diffraction patterns will cancel out the cross correlations between different particles and converge to the autocorrelation functions of single particles. Applied on heterogeneous disordered ensembles, the retrieved function is a linear combination of a single-particle autocorrelation function multiplied by the molar ratios in a heterogeneous system. Using this relation, the ring angular correlation functions of the individual component particles in the heterogeneous system can be retrieved through the high throughput fluctuation x-ray scattering technique. This method is demonstrated with a simulated heterogeneous system composed of nanorods, nanoprism, and nanorice.

Received 1 October 2012

DOI:https://doi.org/10.1103/PhysRevLett.110.195501

Authors & Affiliations

Gang Chen^1,2,*, Peter H. Zwart^3,†, and Dongsheng Li^4,‡

¹Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China
²Material Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
³Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
⁴Fundamental and Computational Science Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, USA