Hydro-static behaviour of highly inert Fomblin and Halocarbon fluids as pressure-transmitting media in high-pressure experiments.

IF 2.8 3区材料科学 Q1 Biochemistry, Genetics and Molecular Biology Journal of Applied Crystallography Pub Date : 2025-02-01 DOI:10.1107/S1600576725000342

Klemen Motaln, Erik Uran, Nico Giordano, Simon Parsons, Matic Lozinšek

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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.

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高压实验中高惰性氟烃和卤代烃流体作为传压介质的静水行为。

传压介质（PTM）在金刚石砧孔（DAC）实验中起着重要的作用，它保证了样品处于静水压力下。虽然在环境条件下作为液体的ptm是最容易处理和加载的，但具有既定静流体特性的化学惰性液体介质的选择是有限的。为了扩大高压实验中高惰性PTMs的选择范围，研究了Fomblin Z60、Fomblin Z25、Fomblin Y lvac06 /6和卤代烃油11-14的静水行为。红宝石荧光法用于监测压缩和减压过程中DAC样品腔内压力梯度的演变。全氟聚醚的静水性能最好，分别为1.7和1.5 GPa，其次是卤代烃油11-14，极限为1.2 GPa，而氟代烃Y lvac06 /6的非静水性能仅为0.6 GPa以上。

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来源期刊

Journal of Applied Crystallography 化学-晶体学

CiteScore

10.00

自引率

3.30%

发文量

178

审稿时长

4.7 months

期刊介绍： Many research topics in condensed matter research, materials science and the life sciences make use of crystallographic methods to study crystalline and non-crystalline matter with neutrons, X-rays and electrons. Articles published in the Journal of Applied Crystallography focus on these methods and their use in identifying structural and diffusion-controlled phase transformations, structure-property relationships, structural changes of defects, interfaces and surfaces, etc. Developments of instrumentation and crystallographic apparatus, theory and interpretation, numerical analysis and other related subjects are also covered. The journal is the primary place where crystallographic computer program information is published.