Washington, DC— Every school child learns about the water cycle—evaporation, condensation, precipitation, and collection. But what if there were a deep Earth component of this process...
Explore this Story
Artist's conception of lead selenide under pressure courtesy of Xiao-Jia Chen.
Washington, DC— Pressure improves the ability of materials to turn heat into electricity and could potentially be used to create clean generators, according to new work from a team that...
Explore this Story
Journal of Physical Chemistry Letters cover
Washington, DC— New materials can contribute potential solutions to many societal issues—from increasing access to clean drinking water to improving solar panel efficiency. But figuring...
Explore this Story
A new Venture Grant has been awarded to the Geophysical Laboratory’s Dionysis Foustoukos and Sue Rhee of the Department of Plant Biology, with colleague Costantino Vetriani of Rutgers...
Explore this Story
Unraveling the properties of fluid metallic hydrogen could help scientists unlock the mysteries of Jupiter’s formation and internal structure. Credit: Mark Meamber, LLNL.
Washington, DC—Lab-based mimicry allowed an international team of physicists including Carnegie’s Alexander Goncharov to probe hydrogen under the conditions found in the interiors of...
Explore this Story
Nitrogen is the dominant gas in Earth’s atmosphere, where it is most-commonly bonded with itself in diatomic N2 molecules. New work indicate that it becomes a metallic fluid when subjected to the extreme pressure and temperature conditions found deep insi
Washington, DC—New work from a team led by Carnegie’s Alexander Goncharov confirms that nitrogen, the dominant gas in Earth’s atmosphere, becomes a metallic fluid when subjected to...
Explore this Story
Washington, D.C.--Venkata Srinu Bhadram in Timothy Strobel’s lab at the Geophysical Laboratory (GL) will receive the ninth Postdoctoral Innovation and Excellence Award (PIE). These awards are...
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
Sally June Tracy applies cutting-edge experimental and analytical techniques to understand the fundamental physical behavior of materials at extreme conditions. She uses dynamic compression techniques with high-flux X-ray sources to probe the structural...
Meet this Scientist
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...
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...
China has halted exports to Japan of rare earth elements — which are crucial for advanced manufacturing — trading company officials said Friday amid tensions between the rival Asian powers over a...
Explore this Story
Pressure improves lead selenide's ability to turn heat into electricity and could potentially be used to create clean energy generators, according to new work from a team that includes Carnegie...
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

Explore Carnegie Science

April 26, 2022

Washington, DC— New work from an international team led by Carnegie’s Alexander Goncharov synthesized a new material composed of six nitrogen atoms in a ring, bringing scientists one step closer to creating a long-theorized, pure-nitrogen solid that could revolutionize energy storage and propulsion. Their findings published last week in Nature Chemistry.

Nitrogen is one of the most common elements in the universe and is abundant in biochemical compounds.  It is notable for the extremely strong triple bond of its elemental form—when two nitrogen atoms join to form N2 gas. This attraction is so strong that despite the abundance of nitrogen in

Guided diamond nanothread synthesis illustrated by Samuel Dunning
March 2, 2022

Washington, DC— As hard as diamond and as flexible as plastic, highly sought-after diamond nanothreads would be poised to revolutionize our world—if they weren’t so difficult to make.

Recently, a team of scientists led by Carnegie’s Samuel Dunning and Timothy Strobel developed an original technique that predicts and guides the ordered creation of strong, yet flexible, diamond nanothreads, surmounting several existing challenges.  The innovation will make it easier for scientists to synthesize the nanothreads—an important step toward applying the material to practical problems in the future. The work was recently published in the Journal of the

Fullerene C60 purchased from Shutterstock
November 24, 2021

Washington, DC—Carnegie’s Yingwei Fei and Lin Wang were part of an international research team that synthesized a new ultrahard form of carbon glass with a wealth of potential practical applications for devices and electronics. It is the hardest known glass with the highest thermal conductivity among all glass materials. Their findings are published in Nature.

Function follows form when it comes to understanding the properties of a material. How its atoms are chemically bonded to each other, and their resulting structural arrangement, determines a material’s physical qualities—both those that are observable by the naked eye and those that are only revealed

Silicon in the periodic table courtesy of Shutterstock
June 3, 2021

Washington, DC—A team led by Carnegie’s Thomas Shiell and Timothy Strobel developed a new method for synthesizing a novel crystalline form of silicon with a hexagonal structure that could potentially be used to create next-generation electronic and energy devices with enhanced properties that exceed those of the “normal” cubic form of silicon used today.

Their work is published in Physical Review Letters.

Silicon plays an outsized role in human life. It is the second most abundant element in the Earth’s crust. When mixed with other elements, it is essential for many construction and infrastructure projects. And in pure elemental form, it is

No content in this section.

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.

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

Timothy Strobel subjects materials to high-pressures to understand chemical processes  and interactions, and to create new, advanced energy-related materials.

For instance, silicon is the second most abundant element in the Earth’s crust and a mainstay of the electronics industry. But normal silicon is not optimal for solar energy. In its conventional crystalline form, silicon is relatively inefficient at absorbing the wavelengths most prevalent in sunlight.  Strobel made a discovery that may turn things around.  Using the high-pressure techniques pioneered at Carnegie, he created a novel form of silicon with its atoms arranged in a cage-like structure. Unlike

Experimental petrologist Michael Walter became Director of the Geophysical Laboratory beginning April 1, 2018. The lab recently merged with the Department of Terrestrial Magnetism  forming the Earth and Planets Laboratory, where he was Deputy Director until January 2022, when he became Director. His recent research has focused on the period early in Earth’s history, shortly after the planet accreted from the cloud of gas and dust surrounding our young Sun, when the mantle and the core first separated into distinct layers. Current topics of investigation also include the structure and properties of various compounds under the extreme pressures and temperatures found

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