Contributed Review: Culet diameter and the achievable pressure of a diamond anvil cell: Implications for the upper pressure limit of a diamond anvil cell

Recently, static pressures of more than 1.0 TPa have been reported, which raises the question: what is the maximum static pressure that can be achieved using diamond anvil cell techniques? Here we compile culet diameters, bevel diameters, bevel angles, and reported pressures from the literature. We fit these data and find an expression that describes the maximum pressure as a function of the culet diameter. An extrapolation of our fit reveals that a culet diameter of 1 mu m should achieve a pressure of similar to 1.8 TPa. Additionally, for pressure generation of similar to 400 GPa with a single beveled diamond anvil, the most commonly reported parameters are a culet diameter of similar to 20 mu m, a bevel angle of 8.5 degrees, and a bevel diameter to culet diameter ratio between 14 and 18. Our analysis shows that routinely generating pressures more than similar to 300 GPa likely requires diamond anvil geometries that are fundamentally different from a beveled or double beveled anvil (e.g., toroidal or double stage anvils) and culet diameters that are <= 20 mu m. Published by AIP Publishing.