Extensively Microtwinned Diamond with Nanolaminates of Lonsdaleite Formed by Flash Laser Heating of Glassy Carbon

Brenton Cook; Philipp Reineck; Thomas Shiell; Jodie Bradby; Bryan D. Esser; Joanne Etheridge; Bianca Haberl; Reinhard Boehler; David R. McKenzie; Dougal G. McCulloch

doi:10.1021/acs.nanolett.3c02900

Extensively Microtwinned Diamond with Nanolaminates of Lonsdaleite Formed by Flash Laser Heating of Glassy Carbon

Brenton Cook, Philipp Reineck, Thomas Shiell, Jodie Bradby, Bryan D. Esser, Joanne Etheridge, Bianca Haberl, Reinhard Boehler, David R. McKenzie, Dougal G. McCulloch

High Pressure

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

Diamond’s unique properties on the nanoscale make it one of the most important materials for use in biosensors and quantum computing and for components that can withstand the harsh environments of space. We synthesize oriented, faceted diamond particles by flash laser heating of glassy carbon at 16 GPa and 2300 K. Detailed transmission electron microscopy shows them to consist of a mosaic of diamond nanocrystals frequently joined at twin boundaries forming microtwins. Striking 3-fold translational periodicity was observed in both imaging and diffraction. This periodicity was shown to originate from nanodimensional wedge-shaped overlapping regions of twinned diamond and not from a possible 9R polytype, which has also been reported in other group IVa elements and water ice. Extended bilayers of hexagonal layer stacking were observed, forming lonsdaleite nanolaminates. The particles exhibited optical fluorescence with a rapid quench time (<1 ns) attributed to their unique twinned microstructure.

Original language	English
Pages (from-to)	10311-10316
Number of pages	6
Journal	Nano Letters
Volume	23
Issue number	22
DOIs	https://doi.org/10.1021/acs.nanolett.3c02900
State	Published - Nov 22 2023

Funding

Electron microscopy was conducted at the RMIT Microscopy and Microanalysis Facility and the Monash Centre for Electron Microscopy. The authors gratefully acknowledge support provided by the Australian Research Council (grants LE170100118, LE0454166, LE140100104, DP190101438, DP200103070, DP230101407, DE200100279). P.R. acknowledges support from an RMIT University Vice-Chancellor’s Senior Research Fellowship. This research used resources at the Spallation Neutron Source, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory. This article was authored by UT-Battelle, LLC under Contract DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan ( http://energy.gov/downloads/doe-public-access-plan ).

Funders	Funder number
U.S. Department of Energy
Office of Science
Oak Ridge National Laboratory
Australian Research Council	DE200100279, DP190101438, LE140100104, LE170100118, DP200103070, LE0454166, DP230101407
RMIT University

Keywords

Diamond
defects
high pressure
laser heating
transmission electron microscopy

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10.1021/acs.nanolett.3c02900

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title = "Extensively Microtwinned Diamond with Nanolaminates of Lonsdaleite Formed by Flash Laser Heating of Glassy Carbon",

abstract = "Diamond{\textquoteright}s unique properties on the nanoscale make it one of the most important materials for use in biosensors and quantum computing and for components that can withstand the harsh environments of space. We synthesize oriented, faceted diamond particles by flash laser heating of glassy carbon at 16 GPa and 2300 K. Detailed transmission electron microscopy shows them to consist of a mosaic of diamond nanocrystals frequently joined at twin boundaries forming microtwins. Striking 3-fold translational periodicity was observed in both imaging and diffraction. This periodicity was shown to originate from nanodimensional wedge-shaped overlapping regions of twinned diamond and not from a possible 9R polytype, which has also been reported in other group IVa elements and water ice. Extended bilayers of hexagonal layer stacking were observed, forming lonsdaleite nanolaminates. The particles exhibited optical fluorescence with a rapid quench time (<1 ns) attributed to their unique twinned microstructure.",

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AU - Shiell, Thomas

AU - Bradby, Jodie

AU - Esser, Bryan D.

AU - Etheridge, Joanne

AU - Haberl, Bianca

AU - Boehler, Reinhard

AU - McKenzie, David R.

AU - McCulloch, Dougal G.

PY - 2023/11/22

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N2 - Diamond’s unique properties on the nanoscale make it one of the most important materials for use in biosensors and quantum computing and for components that can withstand the harsh environments of space. We synthesize oriented, faceted diamond particles by flash laser heating of glassy carbon at 16 GPa and 2300 K. Detailed transmission electron microscopy shows them to consist of a mosaic of diamond nanocrystals frequently joined at twin boundaries forming microtwins. Striking 3-fold translational periodicity was observed in both imaging and diffraction. This periodicity was shown to originate from nanodimensional wedge-shaped overlapping regions of twinned diamond and not from a possible 9R polytype, which has also been reported in other group IVa elements and water ice. Extended bilayers of hexagonal layer stacking were observed, forming lonsdaleite nanolaminates. The particles exhibited optical fluorescence with a rapid quench time (<1 ns) attributed to their unique twinned microstructure.

AB - Diamond’s unique properties on the nanoscale make it one of the most important materials for use in biosensors and quantum computing and for components that can withstand the harsh environments of space. We synthesize oriented, faceted diamond particles by flash laser heating of glassy carbon at 16 GPa and 2300 K. Detailed transmission electron microscopy shows them to consist of a mosaic of diamond nanocrystals frequently joined at twin boundaries forming microtwins. Striking 3-fold translational periodicity was observed in both imaging and diffraction. This periodicity was shown to originate from nanodimensional wedge-shaped overlapping regions of twinned diamond and not from a possible 9R polytype, which has also been reported in other group IVa elements and water ice. Extended bilayers of hexagonal layer stacking were observed, forming lonsdaleite nanolaminates. The particles exhibited optical fluorescence with a rapid quench time (<1 ns) attributed to their unique twinned microstructure.

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Extensively Microtwinned Diamond with Nanolaminates of Lonsdaleite Formed by Flash Laser Heating of Glassy Carbon

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Keywords

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