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Latest Diamond anvil cell Stories

2014-05-23 13:27:42

Carnegie Institution 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. The lower mantle comprises 55 percent of the planet by volume and extends from 670 and 2900 kilometers in depth, as defined by the so-called transition zone (top) and the core-mantle boundary (below). Pressures in the lower...

X-ray Study Reveals Formation Of Iridium Trihydride At High Pressure
2013-11-20 10:34:40

Desy An international team of researchers has synthesized a new material that stores an unusually large amount of hydrogen. Performing high-pressure X-ray studies at DESY’s PETRA III and other light sources, the scientists detected the formation of previously unobserved iridium hydride from hydrogen and metallic iridium at a pressure of 55 gigapascals (GPa), corresponding to approximately 550,000 times the Earth’s atmospheric pressure. The new material can store up to three times more...

New Technique Defies Laws of Physics
2013-06-13 12:20:48

Rebekah Eliason for redOrbit.com - Your Universe Online What happens when you squeeze something? It usually gets smaller, but not if you are at Argonne National Laboratory. Contrary to basic laws of physics, researchers at the Chicago laboratory have discovered a new technique for applying pressure to a material that actually causes it to expand instead of compress or contract. “It´s like squeezing a stone and forming a giant sponge,” said Karena Chapman, a chemist...

2012-12-14 12:27:50

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. This could result in the material breaking or shattering, but it could also re-shape the material, such as a hammer denting a piece of metal. Understanding this last group of changes is the focus of research from a team including Carnegie's Ho-kwang "Dave" Mao. Their breakthrough...

2012-10-24 23:57:48

The study of materials at extreme conditions took a giant leap forward with the discovery of a way to generate super high pressures without using shock waves whose accompanying heat turns solids to liquid. This discovery will allow scientists for the first time to reach static pressure levels exceeding four million atmospheres, a high-pressure environment where new unique compounds could be formed, materials change their chemical and physical properties and metals become insulators. ...

2011-12-20 22:29:26

Caltech researchers obtain highest-pressure vibrational spectrum of iron Identifying the composition of the earth's core is key to understanding how our planet formed and the current behavior of its interior. While it has been known for many years that iron is the main element in the core, many questions have remained about just how iron behaves under the conditions found deep in the earth. Now, a team led by mineral-physics researchers at the California Institute of Technology (Caltech)...

Image 1 - Exploring The Last White Spot On Earth
2011-11-10 13:36:31

ESRF inaugurates unique new X-ray facility Scientists will soon be exploring matter at temperatures and pressures so extreme it can only be produced for microseconds using powerful pulsed lasers. Matter in such states is present in the Earth's liquid iron core, 2500 kilometers beneath the surface, and also in elusive "warm dense matter" inside large planets like Jupiter. A new X-ray beamline ID24 at the European Synchrotron Radiation Facility (ESRF) in Grenoble, France, allows a new...

2011-10-17 22:00:23

An amorphous diamond — one that lacks the crystalline structure of diamond, but is every bit as hard — has been created by a Stanford-led team of researchers. But what good is an amorphous diamond? "Sometimes amorphous forms of a material can have advantages over crystalline forms," said Yu Lin, a Stanford graduate student involved in the research. The biggest drawback with using diamond for purposes other than jewelry is that even though it is the hardest material known,...

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2011-05-18 08:36:13

By Anne M Stark, LLNL By combining high pressure with high temperature, Livermore researchers have created a nanocyrstalline diamond aerogel that could improve the optics for something as big as a telescope or as small as the lenses in eyeglasses. Aerogels are a class of materials that exhibit the lowest density, thermal conductivity, refractive index and sound velocity of any bulk solid. Aerogels are among the most versatile materials available for technical applications due to their many...

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2009-11-05 07:34:36

Scientists in Washington, D.C. are reporting laboratory evidence supporting the possibility that some of Earth's oil and natural gas may have formed in a way much different than the traditional process described in science textbooks. Their study is scheduled for Nov./Dec. issue of ACS' Energy & Fuels, a bi-monthly publication. Anurag Sharma and colleagues note that the traditional process involves biology: Prehistoric plants died and changed into oil and gas while sandwiched between...


Word of the Day
call-note
  • The call or cry of a bird or other animal to its mate or its young.
'Call-note' is newer than 'bird-call,' which originally referred to 'an instrument for imitating the note of birds' but now also refers to 'the song or cry of a bird.'
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