Fluctuation X-ray scattering from nanorods in solution reveals weak temperature-dependent orientational ordering

IUCrJ

Wiegart, L.¹  Kurta, R.P.² 

[1] Brookhaven National Laboratory, Photon Sciences Directorate, Upton, NY 11973, USA;European XFEL, Holzkoppel 4, 22869 Schenefeld, Germany

关键词: NANOSCIENCE;    SMALL-ANGLE X-RAY SCATTERING;    SAXS;    CORRELATED FLUCTUATIONS;    X-RAY FREE-ELECTRON LASERS;    XFELS;   

DOI  :  10.1107/S2052252519005499

学科分类：数学（综合）

来源: International Union of Crystallography

【 摘 要 】

Higher-order statistical analysis of X-ray scattering from dilute solutions of polydisperse goethite nanorods was performed and revealed structural information which is inaccessible by conventional small-angle scattering. For instance, a pronounced temperature dependence of the correlated scattering from suspension was observed. The higher-order scattering terms deviate from those expected for a perfectly isotropic distribution of particle orientations, demonstrating that the method can reveal faint orientational order in apparently disordered systems. The observation of correlated scattering from polydisperse particle solutions is also encouraging for future free-electron laser experiments aimed at extracting high-resolution structural information from systems with low particle heterogeneity.

【 授权许可】

CC BY