Volume 95 Issue 24 | pp. 16-17
Issue Date: June 12, 2017

Why it’s so hard to make metallic hydrogen

Experimental challenges contributed to the controversy over claims of creating the elusive material
Department: Science & Technology
Keywords: materials, geochemistry, astrochemistry, metallic hydrogen, diamond anvil

When it comes to having a high-pressure job, diamond anvil cells (DACs) take the cake. By using these niche instruments, researchers can subject solids, liquids, and gases to pressures up to millions of times as high as atmospheric pressure and thereby probe phase transformations, chemical bonding, and other properties of materials under pressures that are inaccessible to nearly every other laboratory technique.

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