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Title: Single crystal toroidal diamond anvils for high pressure experiments beyond 5 megabar

Journal Article · · Nature Communications

Static compression experiments over 4 Mbar are rare, yet critical for developing accurate fundamental physics and chemistry models, relevant to a range of topics including modeling planetary interiors. Here we show that focused ion beam crafted toroidal single-crystal diamond anvils with ~9.0 μm culets are capable of producing pressures over 5 Mbar. The toroidal surface prevents gasket outflow and provides a means to stabilize the central culet. We have reached a maximum pressure of ~6.15 Mbar using Re as in situ pressure marker, a pressure regime typically accessed only by double-stage diamond anvils and dynamic compression platforms. In conclusion, optimizing single-crystal diamond anvil design is key for extending the pressure range over which studies can be performed in the diamond anvil cell.

Research Organization:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1474369
Report Number(s):
LLNL-JRNL-746958; 931484
Journal Information:
Nature Communications, Vol. 9, Issue 1; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 48 works
Citation information provided by
Web of Science

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Cited By (5)

Contributed Review: Culet diameter and the achievable pressure of a diamond anvil cell: Implications for the upper pressure limit of a diamond anvil cell journal November 2018
Fly scan apparatus for high pressure research using diamond anvil cells journal January 2019
High-pressure isothermal equation of state of composite materials: A case study of LX-17 polymer bonded explosive journal July 2019
Intermolecular coupling and fluxional behavior of hydrogen in phase IV journal December 2019
Intermolecular coupling and fluxional behavior of hydrogen in phase IV text January 2019