Atomic scale dynamics of metal nanoclusters
Physical Chemistry of Molecules, Liquids and Interfaces, Biophysical Chemistry
Final Report Abstract
The aim of the project was the study of dynamics of metal particles, few-atom clusters, and even single atoms and their catalytic behaviour under the influence of external stimuli such as temperature and electron irradiation. The structures were encapsulated within single-walled carbon nanotube (SWCNT) that act as ultrasmall test tubes. The electron beam of the electron microscope was not only the tool to image the structures in atomic resolution but also depending on electron energy (acceleration voltage varied between 20 to 80 kV using the SALVE TEM) it transferred energy to the system cluster-nanotube and triggered structural changes and even chemical reaction. With a dynamic of sub-seconds time resolution, the temporal development of the reactions could be observed with durations of up to few hours. Accompanying spectroscopic analysis (EELS and EDX), image simulation and structural calculation (molecular dynamics (MD) and first-principle (DFT) were carried out. Main results and highlights were the observation and the identification of the cluster nucleation process at the atomic scale, the atomic study of dynamics between single atoms and vacancies in graphic-like lattices and the observation of a molecular-bonding between two Re-atoms.
Publications
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Atomic mechanism of metal crystal nucleus formation in a single-walled carbon nanotube. Nature Chemistry, 12(10), 921-928.
Cao, Kecheng; Biskupek, Johannes; Stoppiello, Craig T.; McSweeney, Robert L.; Chamberlain, Thomas W.; Liu, Zheng; Suenaga, Kazu; Skowron, Stephen T.; Besley, Elena; Khlobystov, Andrei N. & Kaiser, Ute
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Bond Dissociation and Reactivity of HF and H2O in a Nano Test Tube. ACS Nano, 14(9), 11178-11189.
Biskupek, Johannes; Skowron, Stephen T.; Stoppiello, Craig T.; Rance, Graham A.; Alom, Shamim; Fung, Kayleigh L. Y.; Whitby, Richard J.; Levitt, Malcolm H.; Ramasse, Quentin M.; Kaiser, Ute; Besley, Elena & Khlobystov, Andrei N.
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Direct Imaging of Atomic Permeation Through a Vacancy Defect in the Carbon Lattice. Angewandte Chemie International Edition, 59(51), 22922-22927.
Cao, Kecheng; Skowron, Stephen T.; Stoppiello, Craig T.; Biskupek, Johannes; Khlobystov, Andrei N. & Kaiser, Ute
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Imaging an unsupported metal–metal bond in dirhenium molecules at the atomic scale. Science Advances, 6(3).
Cao, Kecheng; Skowron, Stephen T.; Biskupek, Johannes; Stoppiello, Craig T.; Leist, Christopher; Besley, Elena; Khlobystov, Andrei N. & Kaiser, Ute
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Synthesis of ultrathin rhenium disulfide nanoribbons using nano test tubes. Nano Research, 15(2), 1282-1287.
Norman, Luke T.; Biskupek, Johannes; Rance, Graham A.; Stoppiello, Craig T.; Kaiser, Ute & Khlobystov, Andrei N.
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Deep-Learning Pipeline for Statistical Quantification of Amorphous Two-Dimensional Materials. ACS Nano, 16(12), 20488-20496.
Leist, Christopher; He, Meng; Liu, Xue; Kaiser, Ute & Qi, Haoyuan
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Subnanometer-Wide Indium Selenide Nanoribbons. ACS Nano, 17(6), 6062-6072.
Cull, William J.; Skowron, Stephen T.; Hayter, Ruth; Stoppiello, Craig T.; Rance, Graham A.; Biskupek, Johannes; Kudrynskyi, Zakhar R.; Kovalyuk, Zakhar D.; Allen, Christopher S.; Slater, Thomas J. A.; Kaiser, Ute; Patanè, Amalia & Khlobystov, Andrei N.
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“Dynamics of single atoms and molecules encapsulated in carbon nanotubes, Poster presentation at Microscopy Conference 2023, Darmstadt
J. Biskupek, I. Cardillo-Zallo, S. T. Skowron, C.T. Stopiello, G. A. Rance, Q. Ramasse, E. Besley, E. Besley, A. Khlobystov & U. Kaiser
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„Deep learning pipeline for statistical quantification of amorphpus two-dimensional materials and dynamic tracking” Poster presentation at Microscopy Conference 2023, Darmstadt
C. Leist, H. Qi & U. Kaiser
