Hydro-static behaviour of highly inert Fomblin and Halocarbon fluids as pressure-transmitting media in high-pressure
Klemen Motaln1,2, Erik Uran1,2, Nico Giordano3
1Jožef Stefan Institute Jamova cesta 39 1000Ljubljana Slovenia.
Abstract:
A pressure-transmitting medium (PTM) plays an important role in diamond anvil cell (DAC) experiments as it ensures that the sample is exposed to hydro-static pressure. Although PTMs that are liquids under ambient conditions are the easiest to handle and load, the selection of chemically inert liquid media with established hydro-static properties is limited. To widen the choice of highly inert PTMs for high-pressure experiments, the hydro-static behaviours of Fomblin Z60, Fomblin Z25, Fomblin Y LVAC 06/6 and Halocarbon Oil 11-14 were investigated. The ruby fluorescence method was used to monitor the evolution of pressure gradients across the DAC sample chamber during compression and decompression. Fomblin Z60 and Fomblin Z25 perfluoro-polyethers, which are hydro-static to 1.7 and 1.5 GPa, respectively, exhibited the best hydro-static performance, followed by Halocarbon Oil 11-14 with a limit of 1.2 GPa, whereas the non-hydro-static behaviour of Fomblin Y LVAC 06/6 was observed above only 0.6 GPa.
More Related Videos
Related Concept Videos
Pressure of Fluids
Fluid Pressure
According to Pascal's law, a fluid at rest will generate equal pressure in all directions. This pressure is measured as a force per unit area, and its magnitude depends on the fluid's specific...
Accelerating Fluids
The motion of the liquid within this infinitesimal cylinder is considered to obtain the pressure difference. Three vertical forces act on this liquid:
Characteristics of Fluids
Fluids, which include both liquids and gases, are substances that deform continuously under shearing stress. For example, water and oil are liquids with molecules that can...
Fluid Pressure over Flat Plate of Variable Width
The pressure distribution on the plate can be calculated by determining the force that acts on a differential area strip of the plate. Thus, the magnitude of the force is equal to the...
Pressure Variation in a Fluid at Rest
When measuring pressure at two different levels within the fluid, the difference in...


