Terapascal static pressure generation with ultrahigh yield strength nanodiamond

Natalia Dubrovinskaia, Leonid Dubrovinsky, Natalia A. Solopova, Artem Abakumov, Stuart Turner, Michael Hanfland, Elena Bykova, Maxim Bykov, Clemens Prescher, Vitali B. Prakapenka, Sylvain Petitgirard, Irina Chuvashova, Biliana Gasharova, Yves Laurent Mathis, Petr Ershov, Irina Snigireva, Anatoly Snigirev

Research output: Contribution to journalArticlepeer-review

123 Citations (Scopus)

Abstract

Studies of materials’ properties at high and ultrahigh pressures lead to discoveries of unique physical and chemical phenomena and a deeper understanding of matter. In high-pressure research, an achievable static pressure limit is imposed by the strength of available strong materials and design of high-pressure devices. Using a high-pressure and high-temperature technique, we synthesized optically transparent microballs of bulk nanocrystalline diamond, which were found to have an exceptional yield strength (~460 GPa at a confining pressure of ~70 GPa) due to the unique microstructure of bulk nanocrystalline diamond. We used the nanodiamond balls in a double-stage diamond anvil cell high-pressure device that allowed us to generate static pressures beyond 1 TPa, as demonstrated by synchrotron x-ray diffraction. Outstanding mechanical properties (strain-dependent elasticity, very high hardness, and unprecedented yield strength) make the nanodiamond balls a unique device for ultrahigh static pressure generation. Structurally isotropic, homogeneous, and made of a low-Z material, they are promising in the field of x-ray optical applications.

Original languageEnglish
Article numbere1600341
JournalScience Advances
Volume2
Issue number7
DOIs
Publication statusPublished - 2016

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