high-pressure device
Quick Summary
High-pressure devices are scientific instruments designed to create and study materials under extreme pressure conditions. These devices are crucial for understanding material properties and synthesizing new substances.
Early high-pressure research, limited to about 0.3 GPa, involved crude iron or steel cylinders. Significant advancements were made by Percy Williams Bridgman, who developed methods to contain pressurized samples more effectively, enabling pressures above 30,000 atm.1
Modern high-pressure apparatuses include:
* Large-volume presses: These use anvils or pistons to compress samples, capable of reaching pressures over 50 GPa.1
* Diamond-anvil cells: Invented in 1958, these use gem-quality diamonds to apply force, allowing for visual observation and various experimental techniques due to diamond's transparency. They hold records for sustained high pressures, exceeding 300 GPa.2
A related technology is the hyperbaric chamber, a sealed environment used primarily for medical treatments like decompression sickness and carbon monoxide poisoning. Pressures in these chambers are typically 1.5 to 3 times ordinary atmospheric pressure.3
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