We used a multi-anvil apparatus for high-pressure synthesis 1. A pure polycrystalline graphite (99.9995%) rod was found to transform into a transparent, colourless phase in only a few minutes at ...

It is noteworthy that due to the local high dense confined plasma created by transparent confinement layer, nanodiamond has been formed at laser intensity as low as 3.7 GW/cm2, which corresponds to ...

Using a diamond anvil to produce extreme pressures and the ultra-brilliant X-ray beams at the Advanced Photon Source in Illinois, scientists with the High-Pressure Collaborative Access Team (HPCAT ...

For comparison, synthetic diamond can be made using high pressures of just 50,000 times atmospheric pressure, but at 2732°F. M-carbon is extremely incompressible and hard, to the point where it ...

Mercury could have a thick underground layer of diamonds, scientists say. Some of the stones may have found their way to the surface, according to a recent study.

Carbon comes in many different structures, most famously graphite and diamond. Other forms were predicted to exist at extremely high pressures, but now researchers have examined carbon under the ...

Chinese scientists have synthesized a "super diamond" that is 40 percent harder than natural diamonds and exhibits high thermal stability, a breakthrough that could enhance the performance of ...

The next step, Wendy Mao says, is to scale up the method to make larger diamond capsules and to make high-pressure phases of materials that could have practical use. Chemical & Engineering News ...

It used to take the Earth 3 billion years, 2,000-degree temperatures, a little carbon and a lot of pressure to grow a diamond. Now, a new machine can do it in five days.

image: A perspective cartoon drawing of nanostructured diamond capsules (NDCs) with high-pressure argon nanodomains embedded in the matrix. Modern diagnostic probes such as hard/soft x-ray ...