A paper*, authored by EFree's Carnegie investigators R. Boehler and M. Guthrie, Carnegie's S. Sinogeikin and collaborators at Oak Ridge National Lab. (ORNL), reports new conical designs for the diamond anvil cell (DAC). These designs permit far larger samples than previously and have so far reached pressures up to 94 GPa. They have been used successfully at ORNL to conduct neutron diffraction under extremes of pressure some 5 times greater than previously.
Amorphous functional nanomaterials have drawn a lot of attention due to their unusual physical properties and numerous important applications. Pressure-induced amorphization (PIA) is considered a potential way to synthesize new amorphous materials with novel properties. To date, few studies have reported the improved properties of materials after PIA and a wide spectrum of opinions on the PIA mechanism still prevails.
The finding of researchers at Stanford University from experiments which recreated the varying extreme conditions of pressure and temperature within the early Earth supports the theory expounded nearly a century ago that the earth was formed in million-year stages. Within the Earth, the rocks and iron-rich materials melted from the heat of radioactive decay of certain isotopes.