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Diamond Anvil Cells
DACsIn a diamond anvil cell, a sample is pressurized by squeezing between two gem-quality diamonds. The sample is held within a small hole (typically 300 microns or less in diameter) within a thin steel sheet. Extreme pressures (1-300 GPa) can be readily achieved by using the diamond anvil cell. Since diamond is transparent across a large portion of the electromagnetic spectrum, we can use almost all solid-state analytical techniques for in situ high-pressure study. The primary techniques we are currently using are optical spectroscopy (Raman and Brillouin scattering) and x-ray diffraction using the highest intensity synchrotron x-ray sources available in the world.

The two diamonds are contained within a piston-cylinder device. Many different designs are available depending on the needs of a particular experiment. Our department machinist, George Rose, makes our diamond cells.

 

 

Types of DACs in our lab:

4-post cell
4-post cell

Mao-type short symmetric cell
Mao-type short symmetric cell

Mao-type symmetric cell
Mao-type symmetric cell
Panoramic cell
Panoramic cell


Duffy Group
High-Pressure Mineral Physics and Materials Science Laboratory
Department of Geosciences
Princeton University