Washington, D.C.—Carnegie scientists are the first to discover the conditions under which nickel oxide can turn into an electricity-conducting metal. Nickel oxide is one of the first compounds to be...
Explore this Story
Washington, D.C. — 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...
Explore this Story
Washington, D.C. — How hydrogen--the most abundant element in the cosmos--responds to extremes of pressure and temperature is one of the major challenges in modern physical science. Moreover,...
Explore this Story
Washington, D.C. — 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...
Explore this Story

Pages

The Geophysical Laboratory has made important advances in the growth of diamond by chemical vapor deposition (CVD).  Methods have been developed to produce single-crystal diamond at low pressure having a broad range of properties.
Explore this Project
CDAC is a multisite, interdisciplinary center headquartered at Carnegie to advance and perfect an extensive set of high pressure and temperature techniques and facilities, to perform studies on a broad range of materials in newly accessible pressure and temperature regimes, and to integrate and...
Explore this Project
The High Pressure Collaborative Access Team (HPCAT) was established to advance cutting-edge, multidisciplinary, high-pressure science and technology using synchrotron radiation at the Advanced Photon Source (APS) of Argonne National Laboratory in Illinois. The integrated HPCAT facility has...
Explore this Project
Anat Shahar is pioneering a field that blends isotope geochemistry with high-pressure experiments to examine planetary cores and the Solar System’s formation, prior to planet formation, and how the planets formed and differentiated. Stable isotope geochemistry is the study of how physical and...
Meet this Scientist
Alexander F. Goncharov's analyzes materials under extreme conditions such as high pressure and temperature using optical spectroscopy and other techniques to understand how matter fundamentally changes, the chemical processes occurring deep within planets, including Earth, and to understand and...
Meet this Scientist
Scientists simulate the high pressures and temperatures of planetary interiors to measure their physical properties. Yingwei Fei studies the composition and structure of planetary interiors with high-pressure instrumentation including the multianvil apparatus, the piston cylinder, and the diamond...
Meet this Scientist
You May Also Like...
Carnegie’s Geophysical Laboratory dedicated two and a half days this week to celebrating the legacy and vision of Marilyn Fogel, who spent 33 years there, doing groundbreaking research and mentoring...
Explore this Story
Carbon is an element of seemingly infinite possibilities. This is because the configuration of its electrons allows for numerous self-bonding combinations that give rise to a range of materials with...
Explore this Story
New research shows that a remarkable defect in synthetic diamond produced by chemical vapor deposition allows researchers to measure, witness, and potentially manipulate. 
Explore this Story

Explore Carnegie Science

August 30, 2017

Washington, DC— A team of Carnegie 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.

Carbon is an element of seemingly infinite possibilities, because the configuration of its electrons allows for numerous self-bonding combinations that give rise to a range of materials with varying properties.

For example, some forms of carbon, such as coal, are what’s called amorphous, meaning that they lack the long-range repetitive structure that makes up a crystal.

Other forms of carbon are

August 1, 2017

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. Geballe, in Viktor Struzhkin’s lab, was awarded the prize for his scientific innovations and community service to the Broad Branch Road (BBR) campus.

Zack works on developing methods to measure the heat capacities of metals and silicates at high pressures. This work applies to developing new materials and studying the deep interiors of planets.   He developed a pioneering technique to measure heat in a diamond

Carnegie Science, Carnegie Institution, Carnegie Institution for Science, University of Bristol
July 13, 2017

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.  

Walter has been at Bristol since 2004 and began a five-year term as head of school in 2013. He received his PhD in geology and Earth science from the University of Texas, Dallas, and a Bachelor of Science in the same from the University of Nebraska, Omaha. Early in his career, Walter was a postdoctoral fellow at the Geophysical Laboratory, so his new role is a homecoming.

Walter’s recent research has focused on

Carnegie Science, Carnegie Institution, Carnegie Institution for Science, Tim Strobel
June 9, 2017

Washington, DC— A team including several Carnegie scientists has developed a form of ultrastrong, lightweight carbon that is also elastic and electrically conductive. A material with such a unique combination of properties could serve a wide variety of applications from aerospace engineering to military armor.

Carbon is an element of seemingly infinite possibilities. This is because the configuration of its electrons allows for numerous self-bonding combinations that give rise to a range of materials with varying properties. For example, transparent, superhard diamonds, and opaque graphite, which is used for both pencils and industrial lubricant, are comprised solely of carbon.

No content in this section.

The High Pressure Collaborative Access Team (HPCAT) was established to advance cutting-edge, multidisciplinary, high-pressure science and technology using synchrotron radiation at the Advanced Photon Source (APS) of Argonne National Laboratory in Illinois.

The integrated HPCAT facility has established four operating beamlines in nine hutches An array of novel X-ray diffraction—imaging at tiny scales--and spectroscopic techniques to reveal chemistry,  has been integrated with high pressure and extreme temperature instrumentation.

With a multidisciplinary approach and multi-institution collaborations, the high-pressure program at the HPCAT has enabeld myriad scientific

The Energy Frontier Research in Extreme Environments Center (EFree) was established to accelerate the discovery and synthesis of kinetically stabilized, energy-related materials using extreme conditions. Partners in this Carnegie-led center include world-leading groups in five universities—Caltech, Cornell, Penn State, Lehigh, and Colorado School of Mines—and will use facilities built and managed by the Geophysical Laboratory at Argonne, Brookhaven, and Oak Ridge National Laboratories. Nine Geophysical Laboratory scientists will participate in the effort, along with Russell Hemley as director and Tim Strobel as associate director.

To achieve their goal, EFree personnel synthesize

CDAC is a multisite, interdisciplinary center headquartered at Carnegie to advance and perfect an extensive set of high pressure and temperature techniques and facilities, to perform studies on a broad range of materials in newly accessible pressure and temperature regimes, and to integrate and coordinate static, dynamic and theoretical results. The research objectives include making highly accurate measurements to understand the transitions of materials into different phases under the multimegabar pressure rang; determine the electronic and magnetic properties of solids and fluid to multimegabar pressures and elevated temperatures; to bridge the gap between static and dynamic

The Geophysical Laboratory has made important advances in the growth of diamond by chemical vapor deposition (CVD).  Methods have been developed to produce single-crystal diamond at low pressure having a broad range of properties.

Alexander F. Goncharov's analyzes materials under extreme conditions such as high pressure and temperature using optical spectroscopy and other techniques to understand how matter fundamentally changes, the chemical processes occurring deep within planets, including Earth, and to understand and develop new materials with potential applications to energy.

In one area Goncharov is pursuing the holy grail of materials science, whether hydrogen can exist in an electrically conducting  metallic state as predicted by theory. He is also interested in understanding the different phases materials undergo as they transition under different pressure and temperature conditions to shed light

Viktor Struzhkin develops new techniques for high-pressure experiments to measure transport and magnetic properties of materials to understand aspects of geophysics, planetary science, and condensed-matter physics. Among his goals are to detect the transition of hydrogen into a high-temperature superconductor under pressure—a state predicted by theory, but thus far unattained—to discover new superconductors, and to learn what happens to materials in Earth’s deep interior where pressure and temperature conditions are extreme. 

Recently, a team including Struzhkin was the first to discover the conditions under which nickel oxide can turn into an electricity-conducting metal. Nickel

Ronald Cohen primarily studies materials through first principles research—computational methods that begin with the most fundamental properties of a system, such as the nuclear charges of atoms, and then calculate what happens to a material under different conditions, such as pressure and temperature. He particularly focuses on properties of materials under extreme conditions such as high pressure and high temperature. This research applies to various topics and problems in geophysics and technological materials.

Some of his work focuses on understanding the behavior of high-technology materials called ferroelectrics—non-conducting crystals with an electric dipole moment similar

Anat Shahar is pioneering a field that blends isotope geochemistry with high-pressure experiments to examine planetary cores and the Solar System’s formation, prior to planet formation, and how the planets formed and differentiated. Stable isotope geochemistry is the study of how physical and chemical processes can cause isotopes—atoms of an element with different numbers of neutrons-- to separate (called isotopic fractionation). Experimental petrology is a lab-based approach to increasing the pressure and temperature of materials to simulate conditions in the interior Earth or other planetary bodies.

Rocks and meteorites consist of isotopes that contain chemical fingerprints of