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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 14: Poster Session II - Complex Fluids and Perovskites
CPP 14.11: Poster
Dienstag, 23. März 2021, 16:30–18:30, CPPp
Applications of Angular Cross-Correlation Analysis to Soft Matter — •Ivan Zaluzhnyy1, Ruslan Kurta2, Marcus Scheele3, Frank Schreiber1, Boris Ostrovskii4, and Ivan Vartanyants5,6 — 1Institute of Applied Physics, University of Tübingen, Tübingen, Germany — 2European XFEL, Schenefeld, Germany — 3Institute of Physical and Theoretical Chemistry, University of Tübingen, Tübingen, Germany — 4Federal Scientific Research Center "Crystallography and photonics", Moscow, Russia — 5Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany — 6National Research Nuclear University MEPhI, Moscow, Russia
An interesting feature of several soft matter systems is so-called orientational order, which can be referred to a specific orientation of anisotropic building blocks or bonds between these blocks. Angular x-ray cross-correlation analysis (AXCCA) is a method to analyze and interpret the anisotropy in x-ray scattering data in order to reveal the details of the orientational order [1]. In combination with scanning x-ray diffraction, AXCCA allows to study the spatial distribution of the orientational order across a large sample. After explaining the concepts of AXCCA, we will discuss the example of such a system, in which orientational order exists at several length scales, namely a superlattice of PbS nanocrystals coupled by organic linkers [2]. AXCCA allows to reveal the preferred orientation of nanoparticles with respect to the superlattice and the degree of angular disorder.
[1] I. Zaluzhnyy, et al., Materials 12 3464 (2019)
[2] I. Zaluzhnyy, et al., Nano Lett. 17 3511 (2017)