Diamond anvil cells and maximum pressure

[tech-art]

I was checking out diamond anvil cells and i have few questions.
I have been on this sites:

http://www.physlink.com/Education/askExperts/ae483.cfm (1)
http://www.matweb.com/search/SpecificMaterial.asp?bassnum=CDiamA (2)
http://merkel.zoneo.net/FEM/index.php?lang=en (3)

1.what is max pressure you can make in dac?
2.how can dac works at 100GPa if compressive strength of diamond is (1)8,680-16,53 GPa, (2)43,72GPa ?
3.What determines how much is max dac pressure?

 

[nbryan5]

The maximum pressure that can be achieved in a diamond anvil cell (DAC) depends on the type of DAC being used as well as the materials used in its construction. Generally, the highest pressures are achieved with DACs that use two diamonds as their anvils. The highest pressure achieved in such a cell is around 300-400 gigapascals (GPa). The compressive strength of diamond plays an important role in determining the maximum pressure achievable in a DAC. The higher the compressive strength of the diamond, the higher the pressure that can be achieved. Other factors that can affect the maximum pressure achievable in a DAC include the size and shape of the anvils, the type of medium used between the anvils, and the type of pressure-transmitting fluid used. For more detailed information on DACs and how they work, you can refer to the references given in the links provided above.

 

[ravenprp]

1. The maximum pressure that can be achieved in a diamond anvil cell (DAC) depends on various factors such as the strength of the diamonds used, the thickness of the gasket, and the size of the culet (the flat surface on the diamond tip). Typically, DACs can generate pressures up to several hundred gigapascals (GPa), with some newer designs capable of reaching pressures over one terapascal (TPa) (1 TPa = 1000 GPa). The maximum pressure also depends on the material being compressed, as some materials are more resistant to compression than others.

2. The compressive strength of diamond refers to its resistance to being squeezed or compressed. However, in a diamond anvil cell, the diamonds are not being compressed but rather used as a medium to apply pressure to the sample between them. This pressure is evenly distributed on the sample, and the compressive strength of the diamonds is not a limiting factor. The strength of the diamonds is important in terms of their ability to withstand the pressure without breaking.

3. The maximum pressure that can be achieved in a diamond anvil cell is determined by the strength of the materials used, the design of the cell, and the amount of force applied. The stronger the materials and the more force applied, the higher the pressure that can be generated. Innovations in diamond anvil cell design, such as using new materials for the anvils, have led to higher maximum pressures being achieved in recent years.