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Three-dimensional imaging of dislocation propagation during crystal growth and dissolution

Titelangaben

Clark, Jesse N. ; Ihli, Johannes ; Schenk, Anna S. ; Kim, Yi-Yeoun ; Kulak, Alexander N. ; Campbell, James M. ; Nisbet, Gareth ; Meldrum, Fiona C. ; Robinson, Ian K.:
Three-dimensional imaging of dislocation propagation during crystal growth and dissolution.
In: Nature Materials. Bd. 14 (August 2015) . - S. 780-784.
ISSN 1476-4660
DOI: 10.1038/nmat4320

Abstract

Atomic-level defects such as dislocations play key roles in determining the macroscopic properties of crystalline materials1, 2. Their effects range from increased chemical reactivity3, 4 to enhanced mechanical properties5, 6. Dislocations have been widely studied using traditional techniques such as X-ray diffraction and optical imaging. Recent advances have enabled atomic force microscopy to study single dislocations7 in two dimensions, while transmission electron microscopy (TEM) can now visualize strain fields in three dimensions with near-atomic resolution8, 9, 10. However, these techniques cannot offer three-dimensional imaging of the formation or movement of dislocations during dynamic processes. Here, we describe how Bragg coherent diffraction imaging (BCDI; refs 11, 12) can be used to visualize in three dimensions, the entire network of dislocations present within an individual calcite crystal during repeated growth and dissolution cycles. These investigations demonstrate the potential of BCDI for studying the mechanisms underlying the response of crystalline materials to external stimuli.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Institutionen der Universität: Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Juniorprofessur Kolloidale Systeme > Juniorprofessur Kolloidale Systeme - Juniorprof. Dr. Anna Schenk
Fakultäten
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Juniorprofessur Kolloidale Systeme
Titel an der UBT entstanden: Nein
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik > 540 Chemie
Eingestellt am: 21 Feb 2017 12:54
Letzte Änderung: 21 Feb 2017 12:54
URI: https://eref.uni-bayreuth.de/id/eprint/36168