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Frame-by-frame observations of structure fluctuations in single mass-selected Au clusters using aberration-corrected electron microscopy

Malcolm Dearg Orcid Logo, Cesare Roncaglia, Diana Nelli, El Yakout El Koraychy, Riccardo Ferrando Orcid Logo, Thomas J. A. Slater Orcid Logo, Richard Palmer Orcid Logo

Nanoscale Horizons, Volume: 9, Issue: 1, Pages: 143 - 147

Swansea University Author: Richard Palmer Orcid Logo

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DOI (Published version): 10.1039/d3nh00291h

Abstract

The multi-dimensional potential energy surface (PES) of a nanoparticle, such as a bare cluster of metal atoms, controls both the structure and dynamic behaviour of the particle. These properties are the subject of numerous theoretical simulations. However, quantitative experimental measurements of c...

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Published in: Nanoscale Horizons
ISSN: 2055-6756 2055-6764
Published: Royal Society of Chemistry (RSC) 2023
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URI: https://cronfa.swan.ac.uk/Record/cronfa65124
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However, quantitative experimental measurements of critical PES parameters are needed to regulate the models employed in the theoretical work. Experimental measurements of parameters are currently few in number, while model parameters taken from bulk systems may not be suitable for nanosystems. Here we describe a new measurement methodology, in which the isomer structures of a single deposited nanocluster are obtained frame-by-frame in an aberration-corrected scanning transmission electron microscope (ac-STEM) in high angle annular dark field (HAADF) mode. Several gold clusters containing 309 ± 15 atoms were analysed individually after deposition from a mass-selected cluster source onto an amorphous carbon film. The main isomers identified are icosahedral (Ih), decahedral (Dh) and face-centred-cubic (fcc) (the bulk structure), alongside many amorphous (glassy) structures. 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spelling v2 65124 2023-11-27 Frame-by-frame observations of structure fluctuations in single mass-selected Au clusters using aberration-corrected electron microscopy 6ae369618efc7424d9774377536ea519 0000-0001-8728-8083 Richard Palmer Richard Palmer true false 2023-11-27 MECH The multi-dimensional potential energy surface (PES) of a nanoparticle, such as a bare cluster of metal atoms, controls both the structure and dynamic behaviour of the particle. These properties are the subject of numerous theoretical simulations. However, quantitative experimental measurements of critical PES parameters are needed to regulate the models employed in the theoretical work. Experimental measurements of parameters are currently few in number, while model parameters taken from bulk systems may not be suitable for nanosystems. Here we describe a new measurement methodology, in which the isomer structures of a single deposited nanocluster are obtained frame-by-frame in an aberration-corrected scanning transmission electron microscope (ac-STEM) in high angle annular dark field (HAADF) mode. Several gold clusters containing 309 ± 15 atoms were analysed individually after deposition from a mass-selected cluster source onto an amorphous carbon film. The main isomers identified are icosahedral (Ih), decahedral (Dh) and face-centred-cubic (fcc) (the bulk structure), alongside many amorphous (glassy) structures. The results, which are broadly consistent with static ac-STEM measurements of an ensemble of such clusters, open the way to dynamic measurements of many different nanoparticles of diverse sizes, shapes and compositions. Journal Article Nanoscale Horizons 9 1 143 147 Royal Society of Chemistry (RSC) 2055-6756 2055-6764 19 10 2023 2023-10-19 10.1039/d3nh00291h COLLEGE NANME Mechanical Engineering COLLEGE CODE MECH Swansea University Other WearegratefultoHenryPHoddinottforthedepositionofthe clusters using the Swansea University Nanocluster Source (SUNS) locatedat theDiamondLight Source, beamlineB07, hostedbyProf.GeorgHeld,andtoProf.BerndvonIssendorff andcolleagues for their contributiontobuilding thesource. We thank Diamond Light Source for access and support in use of the electron Physical Science Imaging Centre (TEM Instrument E01, Proposal Number: MG28449), and gratefully acknowledge EPSRC grant EP/V029797/2 for support of the electron microscopy. 2024-03-07T14:14:00.2347270 2023-11-27T09:55:50.7408832 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering Malcolm Dearg 0000-0002-5134-0094 1 Cesare Roncaglia 2 Diana Nelli 3 El Yakout El Koraychy 4 Riccardo Ferrando 0000-0003-2750-9061 5 Thomas J. A. Slater 0000-0003-0372-1551 6 Richard Palmer 0000-0001-8728-8083 7 65124__29114__47462803c833444587ba027c6d88073e.pdf 65124_Richard Palmer VOR.pdf 2023-11-27T10:00:54.7445595 Output 2886522 application/pdf Version of Record true This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. true eng https://creativecommons.org/licenses/by/4.0/
title Frame-by-frame observations of structure fluctuations in single mass-selected Au clusters using aberration-corrected electron microscopy
spellingShingle Frame-by-frame observations of structure fluctuations in single mass-selected Au clusters using aberration-corrected electron microscopy
Richard Palmer
title_short Frame-by-frame observations of structure fluctuations in single mass-selected Au clusters using aberration-corrected electron microscopy
title_full Frame-by-frame observations of structure fluctuations in single mass-selected Au clusters using aberration-corrected electron microscopy
title_fullStr Frame-by-frame observations of structure fluctuations in single mass-selected Au clusters using aberration-corrected electron microscopy
title_full_unstemmed Frame-by-frame observations of structure fluctuations in single mass-selected Au clusters using aberration-corrected electron microscopy
title_sort Frame-by-frame observations of structure fluctuations in single mass-selected Au clusters using aberration-corrected electron microscopy
author_id_str_mv 6ae369618efc7424d9774377536ea519
author_id_fullname_str_mv 6ae369618efc7424d9774377536ea519_***_Richard Palmer
author Richard Palmer
author2 Malcolm Dearg
Cesare Roncaglia
Diana Nelli
El Yakout El Koraychy
Riccardo Ferrando
Thomas J. A. Slater
Richard Palmer
format Journal article
container_title Nanoscale Horizons
container_volume 9
container_issue 1
container_start_page 143
publishDate 2023
institution Swansea University
issn 2055-6756
2055-6764
doi_str_mv 10.1039/d3nh00291h
publisher Royal Society of Chemistry (RSC)
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering
document_store_str 1
active_str 0
description The multi-dimensional potential energy surface (PES) of a nanoparticle, such as a bare cluster of metal atoms, controls both the structure and dynamic behaviour of the particle. These properties are the subject of numerous theoretical simulations. However, quantitative experimental measurements of critical PES parameters are needed to regulate the models employed in the theoretical work. Experimental measurements of parameters are currently few in number, while model parameters taken from bulk systems may not be suitable for nanosystems. Here we describe a new measurement methodology, in which the isomer structures of a single deposited nanocluster are obtained frame-by-frame in an aberration-corrected scanning transmission electron microscope (ac-STEM) in high angle annular dark field (HAADF) mode. Several gold clusters containing 309 ± 15 atoms were analysed individually after deposition from a mass-selected cluster source onto an amorphous carbon film. The main isomers identified are icosahedral (Ih), decahedral (Dh) and face-centred-cubic (fcc) (the bulk structure), alongside many amorphous (glassy) structures. The results, which are broadly consistent with static ac-STEM measurements of an ensemble of such clusters, open the way to dynamic measurements of many different nanoparticles of diverse sizes, shapes and compositions.
published_date 2023-10-19T14:13:57Z
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