High Pressure
Solar cell compound probed under pressure

Washington, DC— Gallium arsenide, GaAs, a semiconductor composed of gallium and arsenic is well known to have physical properties that promise practical applications.
High Pressure, Materials
New Discovery in High Pressure Diamond Creation

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.
High Pressure
Pressure probing potential photoelectronic manufacturing compound

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High Pressure
Lower mantle chemistry breakthrough

Washington, DC—Breaking research news from a team of scientists led by Carnegie’s Ho-kwang “Dave” Mao reveals that the composition of the Earth’s lower mantle may be significantly different than previously thought. These results are to be published by Science.
High Pressure, Materials
Diamond Defect Boosts Quantum Technology

Washington, DC—New research shows that a remarkable defect in synthetic diamond produced by chemical vapor deposition allows researchers to measure, witness, and potentially manipulate electrons in a manner that could lead to new “quantum technology” for information processing.
High Pressure
Throwing out the textbook: salt surprises chemists

Washington, DC—Table salt, sodium chloride, is one of the first chemical compounds that schoolchildren learn. Standard chemistry textbooks say that sodium and chlorine have very different electronegativities and thus must form an ionic compound with a well-defined composition.
Mineralogy
Ancient Minerals: Which Gave Rise to Life?

Washington, DC— Life originated as a result of natural processes that exploited early Earth’s raw materials.
Astrobiology, Geochemistry
Evidence of 3.5 billion-year-old bacterial ecosystems found in Australia

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Probing methane's secrets: From diamonds to Neptune

Washington, DC—Hydrocarbons from the Earth make up the oil and gas that heat our homes and fuel our cars.
High Pressure, Materials
Supercharged Carbon

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.

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