April 23rd, 2015
New work from Carnegie EFree 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 19th, 2015
Over 50 years ago Russian physicist Sergey M. Stishov synthesized a new dense tetragonal form of SiO2 at high pressure for the first time. This same mineral was later found in a sample from the Barringer Meteor Crater and was named stishovite in his honor. To date, experimental studies have led to the conclusion that stishovite...
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...
February 10th, 2015
Natural gas is a significant component of the US energy economy, but in order for its potential to be realized in the transportation sector, the challenges of on-board natural gas storage need to be addressed. Natural gas liquefaction is an energy-intensive and expensive cryogenic process, and attaining viable energy densities by...
December 9th, 2014
New work from Carnegie's Ivan Naumov and Russell Hemley delves into the chemistry underlying some surprising recent observations about hydrogen and reveals remarkable parallels between hydrogen and graphene under extreme pressure. Their work is the cover story in the December issue of Accounts of Chemical Research. Hydrogen...
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