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Related Experiment Video

Updated: Mar 20, 2026

An Externally-Heated Diamond Anvil Cell for Synthesis and Single-Crystal Elasticity Determination of Ice-VII at High Pressure-Temperature Conditions
07:48

An Externally-Heated Diamond Anvil Cell for Synthesis and Single-Crystal Elasticity Determination of Ice-VII at High Pressure-Temperature Conditions

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An improved hydrothermal diamond anvil cell.

Jiankang Li1, W A Bassett2, I-Ming Chou3

  • 1MLR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China.

The Review of Scientific Instruments
|June 3, 2016
PubMed
Summary

A new hydrothermal diamond anvil cell (HDAC-VT) enhances X-ray research with improved stability and control. This design enables precise heating up to 950°C for in situ sample analysis.

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Last Updated: Mar 20, 2026

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Area of Science:

  • Geosciences
  • Materials Science
  • Physics

Background:

  • Traditional diamond anvil cells face limitations in stability and control for advanced X-ray research.
  • Previous HDAC-V designs offered a large solid angle but had constraints in precise sample manipulation.
  • High-temperature experiments require robust cell designs that ensure sample integrity and longevity of components.

Purpose of the Study:

  • To introduce and evaluate a novel hydrothermal diamond anvil cell (HDAC-VT) optimized for X-ray research.
  • To enhance sample sealing, stability, and component durability compared to previous designs.
  • To enable precise, computer-controlled heating for in situ studies at temperatures up to 950°C.

Main Methods:

  • Design and implementation of a triangular-shaped HDAC-VT with alternative guide systems (posts/bushings or linear ball bearings).
  • Integration of three driver screws for enhanced control and stability.
  • Utilizing Linkam T95 for precise temperature control (0.01–50°C/min) and replacing the Linkam 1400XY heating stage.
  • Incorporation of a protective Ar + H2 gas chamber to prevent oxidation of diamonds and heating elements.

Main Results:

  • The HDAC-VT provides superior control and stability, leading to better sample sealing and extended lifespan for anvils and ceramic parts.
  • The design prevents seizing of components at high temperatures due to lubricant deterioration or overheating.
  • Successful application of HDAC-VT with Linkam T95 for in situ observation of zabuyelite nucleation/growth and homogenization of melt inclusions in quartz.

Conclusions:

  • The HDAC-VT represents a significant advancement in diamond anvil cell technology for high-temperature X-ray research.
  • The improved design facilitates more reliable and precise in situ experiments, particularly in geochemistry and materials science.
  • This cell is well-suited for studying geological processes and material transformations under extreme conditions.