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High Pressure X-Ray Crystallography With the Diamond Cell at NIST/NBS
1National Institute of Standards and Technology, Gaithersburg, MD 20899-8522.
Summary
NIST scientists pioneered high-pressure X-ray crystallography with diamond anvil cells (DACs) and ruby pressure measurement. These innovations spurred global research, with ~5000 DACs built, advancing materials science.
Area of Science:
- Crystallography
- Materials Science
- High-Pressure Physics
Background:
- The second half of the 20th century saw significant advancements in scientific instrumentation.
- High-pressure research was crucial for understanding material properties under extreme conditions.
Purpose of the Study:
- To highlight key contributions of NIST/NBS scientists to high-pressure X-ray crystallography.
- To emphasize the impact of these innovations on global scientific research.
Main Methods:
- Development of the lever-arm diamond anvil cell (DAC) for X-ray diffraction.
- Implementation of DAC technology for both powder and single-crystal X-ray diffraction.
- Invention of the optical fluorescence ruby method for accurate pressure measurement.
- Discovery of novel hydrostatic pressure-transmitting media.
Main Results:
- NIST scientists achieved several "firsts" in high-pressure crystallography, including the DAC and ruby pressure measurement.
- These advancements enabled research at unprecedented pressures for the time.
- An estimated 5000 DACs were constructed over 40 years, indicating widespread adoption.
Conclusions:
- The innovations at NIST/NBS were pivotal in advancing high-pressure X-ray crystallography.
- These developments ignited a global surge in high-pressure research, continuing to this day.
- The widespread use of DACs underscores their transformative impact on materials science and physics.
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