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^*

^*Corresponding author for this work

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

2 Citations (Scopus)

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
Publication status	Published - 22 Nov 2023

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

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doi = "10.1021/acs.nanolett.3c02900",

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T1 - Extensively Microtwinned Diamond with Nanolaminates of Lonsdaleite Formed by Flash Laser Heating of Glassy Carbon

AU - Cook, Brenton

AU - Reineck, Philipp

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

Y1 - 2023/11/22

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.

KW - Diamond

KW - defects

KW - high pressure

KW - laser heating

KW - transmission electron microscopy

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DO - 10.1021/acs.nanolett.3c02900

M3 - Article

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VL - 23

SP - 10311

EP - 10316

JO - Nano Letters

JF - Nano Letters

IS - 22

ER -

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

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