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April 23rd, 2015
New work from Carnegie scientists Russell Hemley and Ivan Naumov hones in on the physics underlying the recently discovered fact that some metals stop being metallic under pressure. Metals are compounds that are capable of conducting the flow of electrons that make up an electric current.
March 18th, 2015
The annual Stewardship Science Academic Programs (SSAP) Symposium was held in Santa Fe, NM on March 11-12, 2015. At the poster session, 18 CDAC graduate students presented their work and Eloisa Zepeda-Alarcon received a Best Poster Award for her presentation. CDAC Coordinator Stephen Gramsch gave an overview of the Center and its...
February 27th, 2015
As iron is heated, the arrangement of the atoms in the solid changes several times before the iron finally melts. This unusual behavior is one reason why steel is so strong. The atomic-level details of how and why iron takes on so many different forms during heating remains a mystery, however. Recent work by Caltech CDAC scientists...
February 11th, 2015
Only a small fraction of our planet’s total carbon budget is found at the surface. In fact, Earth’s mantle is thought to be the largest carbon reservoir. Carbonates, and in particular ferromagnesite ((Mg,Fe)CO3), are likely candidates for deep-Earth carbon storage and therefore play a key role in the deep carbon cycle. The behavior of...
February 10th, 2015
Carbon exists in a variety of structural motifs as a result of its ability to adopt sp-, sp2-, and sp3-type bonding modes. Graphite, diamond, and lonsdaleite (hexagonal diamond) are well-established allotropic forms of carbon, but in recent years fullerenes, nanotubes, graphene and even amorphous carbon have received a increasing...
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