Design of a double-sided laser heating compatible piezoelectrically driven dynamic diamond anvil cell
J A Copley1, R Hrubiak2, T S Duffy1
1Department of Geosciences, Princeton University, Princeton, New Jersey 08544, USA.
The Review of Scientific Instruments
|March 16, 2026
Summary
A new laser-heating dynamic diamond anvil cell (LH-dDAC) overcomes temperature limitations by integrating piezo actuators alongside diamond anvils. This design enables studies of phase transitions under rapid compression and high temperatures.
Area of Science:
- High-pressure physics and materials science.
- Geophysics and planetary science.
- Dynamic compression science.
Background:
- Dynamic diamond anvil cells (dDACs) are crucial for high-pressure research but often limited to room temperature.
- Spatial conflicts between optical components and piezo actuators hinder integration with double-sided laser heating.
- Existing dDACs face limitations in exploring the combined effects of compression rate and temperature on material phase transitions.
Purpose of the Study:
- To design and develop a novel laser-heating dynamic diamond anvil cell (LH-dDAC) compatible with double-sided laser heating.
- To overcome the spatial constraints of conventional dDACs, enabling simultaneous high pressure and temperature studies.
- To expand the experimentally accessible compression rate/temperature space for investigating dynamic processes.
Main Methods:
- Development of a spatially in-parallel design for the dDAC, positioning piezo actuators alongside diamond anvils.
- Reduction of the overall apparatus length to 66.5 mm for enhanced compatibility.
- Utilizing the LH-dDAC for simultaneous pressure and temperature jumps and controlled compression ramps at high pressures and temperatures.
Main Results:
- Demonstrated capability for simultaneous pressure and temperature jumps from 19.5 GPa/RT to 40 GPa/≈1550 K.
- Successfully performed controlled compression ramps at ≈1850 K and ≈100 GPa/s.
- The new LH-dDAC design effectively integrates laser heating with dynamic compression.
Conclusions:
- The developed LH-dDAC overcomes previous temperature limitations in piezoelectrically driven dDACs.
- This advancement allows for the study of kinetics of phase transitions under extreme pressure-temperature conditions and rapid compression rates.
- The LH-dDAC opens new avenues for investigating diffusionally controlled transformations at high pressures and temperatures.
