Pressure has long been recognized as a fundamental thermodynamic variable but its
application was previously limited by the available pressure vessels and probes. The …

Active research is ongoing that investigates the properties of matter under extreme pressure.
Such condensed matter is found inside planets at millions of atmospheres and thousands of …

At the 26th AIRAPT conference in 2017, a task group was formed to work on an International
Practical Pressure Scale (IPPS). This report summarizes the activities of the task group …

Compression versus pressure at ambient temperature has been measured for tantalum,
gold, and platinum to 94 GPa and for aluminum, copper, and tungsten to 153 GPa, in a …

The optimization of diamond films as valuable engineering materials for a wide variety of
applications has required the development of robust methods for their characterization. Of …

Carbon is an element with extremely versatile bonding properties and theoretical
calculations have suggested the possible existence of several hundred structural allotropes …

We report a novel phase of carbon possessing a monoclinic C 2/m structure (8 atoms/cell)
identified using an ab initio evolutionary structural search. This polymorph, which we call M …

The ambient temperature equations of state (EoS) of iron, cobalt, nickel, zinc, molybdenum,
and silver have been measured by x-ray diffraction. These transition metals were …

Interatomic potentials approximate the potential energy of atoms as a function of their
coordinates. Their main application is the effective simulation of many-atom systems. Here …

The ruby luminescence method is widely used for pressure measurement in the diamond
anvil cell and other optically transparent pressure cells. With this application in mind, we …