Four-circle diffractometry with the diamond-anvil cell in the fixed .PHI. mode.

Four-probe electrical measurements with a liquid pressure medium in a diamond anvil cell.

We describe a technique for making electrical transport measurements in a diamond anvil cell using an alcohol pressure medium, permitting acute sensitivity while preserving sample fidelity. The sample is suspended in the liquid medium by four gold leads that are electrically isolated by a composite gasket made of stainless steel and an alumina-loaded epoxy. We demonstrate the technique with fou...

Confocal Microscopy to Measure Volume in a Diamond Anvil Cell

Confocal microscopy is a potentially powerful technique for obtaining equation-of-state (EOS) data for fluids in a diamond anvil cell. Unlike conventional microscopy, a confocal microscope scans the cell in three dimensions. From the intensity profile of the reflected laser light, we calculated the index of refraction and optical thickness of the sample contained in the cell. These measurements...

Amorphous boron gasket in diamond anvil cell research

Recent advances in high-pressure diamond anvil cell experiments include high-energy synchrotron x-ray techniques as well as new cell designs and gasketing procedures. The success of high-pressure experiments usually depends on a well-prepared sample, in which the gasket plays an important role. Various gasket materials such as diamond, beryllium, rhenium, and stainless steel have been used. Her...

Ruby pressure scale in a low-temperature diamond anvil cell

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How to detect melting in laser heating diamond anvil cell