High Pressure

The Geophysical Laboratory's weekly seminar series continues with our own Yingwei Fei.  He will present, "Recovery of an oxidized majorite inclusion from Earth's deep asthenosphere: A unique window into the redox state and convection of the mantle."

High Pressure

The Geophysical Laboratory's weekly seminar series continues with Amy Jenei from LLNL.  She will present, "Using laser compression to probe solid and plassma equation of state to unprecedented pressure regimes at the National Ignition Facility."

Geochemistry, High Pressure

The Geophysical Laboratory's weekly seminar series continues with Michael Walter from the University of Bristol.  He will present, "The Fate of Deeply Subducted Carbon."

High Pressure, Planetary Science

Washington, DC— Did you know that there are at least 17 crystalline forms of ice, many of them formed under extreme pressures, such as those found in the interiors of frozen planets? New work from a team led by Carnegie’s Timothy Strobel has identified the structure of a new type of ice crystal that resembles the mineral quartz and is stuffed with over five weight percent of energy-rich hydrogen molecules, which is a long-standing Department of Energy goal for hydrogen storage.  

High Pressure, Materials

Washington, DC— New work from a team led by the Geophysical Laboratory's Alexander Goncharov has created a new extremely incompressible carbon nitride compound. They say it could be the prototype for a whole new family of superhard materials, due to the unexpected ratio of carbon and nitrogen atoms. Their work is published in the journal Chemistry of Materials.

High Pressure

Washington, DC— Hydrogen is the most-abundant element in the universe. It’s also the simplest—sporting only a single electron in each atom. But that simplicity is deceptive, because there is still so much we have to learn about hydrogen.

High Pressure, Materials

Washington, DC— Using laboratory techniques to mimic the conditions found deep inside the Earth, a team of Geophysical Laboratory scientists led by Ho-Kwang “Dave” Mao has identified a form of iron oxide that they believe could explain seismic and geothermal signatures in the deep mantle. Their work is published in Nature.

Materials

Washington, DC, 18 March 2016—Geophysical Laboratory team Tim Strobel, Venkat Bhadram, and alum DuckYoung Kim, has discovered a new transition metal, titanium pernitride, TiN2, which is ultraincompressible (bulk modulus ~360-385GPa) and could be a potential superhard material.

High Pressure

Washington, DC—If you freeze any liquid fast enough, even liquid metal, it becomes a glass. Vitrified metals, or metallic glasses, are at the frontier of materials science research.

High Pressure

EFree, a research center at the Geophysical Laboratory, held a Center-wide Neutron Day on December 10, 2015 at the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory (ORNL) in Oak Ridge, Tennessee.

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