High Pressure, Materials, Matter at Extreme States

Washington, DC— A team of Geophysical Laboratory high-pressure physicists have created a form of carbon that’s hard as diamond, but amorphous, meaning it lacks the large-scale structural repetition of a diamond’s crystalline structure. Their findings are reported in Nature Communications.

High Pressure, Matter at Extreme States, Planetary Science

Amanda Lindoo is a postdoctoral associateat the Geophysical Laboratory.  She is working with Yingwei Fei on transport processes at high pressure and liquid metal percolation in silicate matrix with implications for core formation of small planetary bodies.

High Pressure, Matter at Extreme States, Planetary Science

The properties of hydrogen at extreme pressures and temperatures are of great interest to condensed matter physics, astrophysics, and planetary science due to the element’s putative

High Pressure, Materials, Matter at Extreme States

Our science cannot be accomplished without state-of-the-art instruments. But sometimes the existing tools simply aren’t enough.

High Pressure, Materials, Matter at Extreme States

Washington, DC  A group of scientists led by the Geophysical Laboratory's Huiyang Gou and Timothy Strobel performed high-pressure experiments on linear dicyanoacetylene (C4N2) using a diamond anvil cell, in which a pressure-induced reaction process was uncovered. Discrete linear C4N2 molecules were found to polymerize into a disordered extended network without significant change to the bulk composition.

Department, High Pressure, Materials, Matter at Extreme States

The Geophysical Laboratory’s Postdoctoral Associate Zachary Geballe has been honored with Carnegie’s seventh Postdoctoral Innovation and Excellence (PIE) Award. These prizes are made through nominations from the departments and are chosen by the Office of the President.

Department, Matter at Extreme States

Washington, DC--Experimental petrologist Michael Walter, currently head of the School of Earth Sciences at the University of Bristol, has been selected as the eighth director of Carnegie’s Geophysical Laboratory.  He will begin his directorship on April 1, 2018.  

High Pressure, Materials, Matter at Extreme States

The Geophysical Laboratory's weekly seminar series continues with Sébastian Merkel of Université Lille 1.  He will present, "The fate of post-perovskite in the Earth's D'' layer: Insights from grain tracking experiments."

Materials

The Geophysical Laboratory's weekly seminar series continues with Eran Greenberg of the University of Chicago.  He will present, "Pressure Induced Electronic/Magnetic Transitions in Iron Oxides – Beyond the Classic Mott and Spin Transitions. "

High Pressure, Materials, Matter at Extreme States

Dhiren Pradhan is a postdoctoral associate working with Ronald Cohen. His works involve experiments on ferroelectrics, piezoelectrics, hyperferroelectrics and magnetoelectric materials.  He recently completed his Ph.D. in Chemical Physics from the University of Puerto Rico,USA.

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