A research team from the Geophysical Laboratory, including Oleksandr Kurakevych, Timothy Strobel, Duck Young Kim and George Cody, has reported the synthesis of an ionic semiconductor, Mg2C, under high-pressure, high-temperature conditions, which is fully recoverable to ambient conditions.
The Story of Earth: The First 4.5 Billion Years, From Stardust to Living Planet, written by the Geophysical Laboratory's Bob Hazen, has been chosen from books released in 2012 as one of the five titles on the short list for the current Phi Beta Kappa Award in Science, one of the three book awards given by Phi Beta Kappa annually.
Washington, DC— Hydrogen is deceptively simple. It has only a single electron per atom, but it powers the sun and forms the majority of the observed universe. As such, it is naturally exposed to the entire range of pressures and temperatures available in the whole cosmos.
Washington, DC—Superconductivity is a rare physical state in which matter is able to conduct electricity—maintain a flow of electrons—without any resistance. This phenomenon can only be found in certain materials under specific low-temperature and high-pressure conditions.
Washington, DC, 19 June 2013--Using novel high-pressure x-ray techniques, Geophysical Laboratory scientists Li Zhang, Yue Meng (HPCAT), Wenge Yang (HPSync), and Ho-kwang Mao, along with CDAC Partner Wendy Mao (Stanford) and colleagues from the University of Chicago have obtained the very first single-crystal structure of (Mg,Fe)SiO3 postperovskite phase under high pressure corresponding to the condition in the Earth’s D′′ layer.
Washington, DC—Using revolutionary new techniques, a team led by Carnegie’s Malcolm Guthrie has made a striking discovery about how ice behaves under pressure, changing ideas that date back almost 50 years.
Washington, DC—Hydrogen is the most abundant element in the universe. The way it responds under extreme pressures and temperatures is crucial to our understanding of matter and the nature of hydrogen-rich planets.
The most highly cited Geophysical Laboratory papers of the past forty years demonstrate the breadth and evolution of science in the department, ranging from seminal discoveries to breakthroughs in technique, spanning small research teams to large-scale collaborations.
Washington, DC—After extensive analyses by a team of scientists led by Carl Agee at the University of New Mexico, researchers have identified a new class of Martian meteorite that likely originated from Mars’s crust.
Washington, DC, 21 December 2012 — Researchers from the Geophysical Laboratory have observed a new compound form of sodium and silicon - a "covalent metal," with unusual structural and electrical properties.
Washington, DC — When materials are stressed, they eventually change shape. Initially these changes are elastic, and reverse when the stress is relieved. When the material’s strength is exceeded, the changes become permanent.
Washington, DC— The mantles of Earth and other rocky planets are rich in magnesium and oxygen. Due to its simplicity, the mineral magnesium oxide is a good model for studying the nature of planetary interiors.
Washington, DC — A team of scientists led by Carnegie’s Lin Wang has observed a new form of very hard carbon clusters, which are unusual in their mix of crystalline and disordered structure. The material is capable of indenting diamond.
Washington, DC — In order to understand Earth's earliest history--its formation from Solar System material into the present-day layering of metal core and mantle, and crust--scientists look to meteorites.
Washington, DC, 4 May 2012- A collaborative experimental effort with Carnegie researchers has discovered unknown properties of a computer memory material that will allow for faster data transfer with a higher capacity of data stored.
Washington, DC, 21 February 2012- In a combined experimental effort researchers from the Geophysical Laboratory, Oak Ridge National Laboratory and Steacie Institute for Molecular Sciences now have a better understanding of a form of high pressure methane clathrate hydrate.
Washington, DC—The crushing pressures and intense temperatures in Earth’s deep interior squeeze atoms and electrons so closely together that they interact very differently. With depth materials change.
Washington, DC,16 December 2011- Carnegie scientists have discovered a new compound composed of H2S and H2. The results further elucidate the role of pressure on intermolecular interactions in molecular compounds.
Washington, DC — The composition of the Earth’s core remains a mystery. Scientists know that the liquid outer core consists mainly of iron, but it is believed that small amounts of some other elements are present as well.
Washington, DC, 15 September 2011- A new study including Wenge Yang from Carnegie reveals a new phase of high energy Aluminum produced using an ultrafast laser induced confined micro-explosion inside a sapphire.
Washington, DC—Carnegie’s Geophysical Laboratory’s newest staff member, Timothy Strobel, will be given the prestigious Jamieson Award on September 26, 2011, from the International Association for the Advancement of High Pressure Science and Technology in Mumbai, India.
Washington, DC, 3 August 2011- An album of fifty hand-colored photographs documenting Japan’s most powerful volcanic eruption of the 20th Century was donated to the Geophysical Laboratory’s archives recently by Susan W. Kieffer.
Washington, DC—Glasses differ from crystals. Crystals are organized in repeating patterns that extend in every direction. Glasses lack this strict organization, but do sometimes demonstrate order among neighboring atoms.
Washington, DC, 14 April 2011- How amino acids attach to mineral surfaces is important for understanding bioadhesion, biomineralization, solar cell development and the origin of life. A study by Geophysical Laboratory scientists sheds new light on this important interaction.
Washington, DC — Although its name may make many people think of flowers, the element germanium is part of a frequently studied group of elements, called IVa, which could have applications for next-generation computer architecture as well as implications for fundamental condensed matter physics.
New research conducted by Xiao-Jia Chen, Viktor Struzhkin, and Ho-kwang (Dave) Mao from Geophysical Laboratory at Carnegie Institution for Science, along with collaborators from China, reveals details of the element’s transitions under pressure. Their results show extraordinary agreement with the predictions of modern condensed matter theory.