Exploring the 3D structure and defects of a self-assembled gold mesocrystal by coherent X-ray diffraction imaging

Exploring the 3D structure and defects of a self-assembled gold mesocrystal by coherent X-ray diffraction imaging

Detalhes bibliográficos
Parent link:Nanoscale
Vol. 13, iss. 23.— 2021.— [P. 9449-9892]
Autor Corporativo: Национальный исследовательский Томский политехнический университет Инженерная школа неразрушающего контроля и безопасности Центр промышленной томографии Международная научно-образовательная лаборатория неразрушающего контроля
Outros Autores: Carnis J. Jerome, Kirner F. Felizitas, Lapkin D. Dmitry, Sturm S. Sebastian, Kim Young Yong, Baburin I. A. Igor, Khubbutdinov R. M. Ruslan, Ignatenko A., Yashina E. G. Ekaterina Gennadjevna, Mistonov A. A. Aleksandr Andreevich, Steegemans T. Tristan, Wieck T. Thomas, Gemming T. Thomas, Lubk A. Axel, Lazarev S. V. Sergey Vladimirovich
Resumo:Title screen
Mesocrystals are nanostructured materials consisting of individual nanocrystals having a preferred crystallographic orientation. On mesoscopic length scales, the properties of mesocrystals are strongly affected by structural heterogeneity. Here, we report the detailed structural characterization of a faceted mesocrystal grain self-assembled from 60 nm sized gold nanocubes. Using coherent X-ray diffraction imaging, we determined the structure of the mesocrystal with the resolution sufficient to resolve each gold nanoparticle. The reconstructed electron density of the gold mesocrystal reveals its intrinsic structural heterogeneity, including local deviations of lattice parameters, and the presence of internal defects. The strain distribution shows that the average superlattice obtained by angular X-ray cross-correlation analysis and the real, “multidomain” structure of a mesocrystal are very close to each other, with a deviation less than 10%. These results will provide an important impact to understanding the fundamental principles of structuring and self-assembly including ensuing properties of mesocrystals.
Idioma:inglês
Publicado em: 2021
Assuntos:
электронный ресурс
труды учёных ТПУ
трехмерные структуры
дефекты
золото
рентгеновская дифракция
наноструктурированные материалы
нанокристаллы
мезокристаллы
Acesso em linha:https://doi.org/10.1039/D1NR01806J
Formato: Recurso Electrónico Capítulo de Livro
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=665262

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