Evans WJ, Yoo CS, Lee GW, Cynn H, Lipp MJ, Visbeck K. Dynamic diamond anvil cell (dDAC): a novel device for studying the dynamic-pressure properties of materials.
THE REVIEW OF SCIENTIFIC INSTRUMENTS 2007;
78:073904. [PMID:
17672770 DOI:
10.1063/1.2751409]
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Abstract
We have developed a unique device, a dynamic diamond anvil cell (dDAC), which repetitively applies a time-dependent load/pressure profile to a sample. This capability allows studies of the kinetics of phase transitions and metastable phases at compression (strain) rates of up to 500 GPa/s (approximately 0.16 s(-1) for a metal). Our approach adapts electromechanical piezoelectric actuators to a conventional diamond anvil cell design, which enables precise specification and control of a time-dependent applied load/pressure. Existing DAC instrumentation and experimental techniques are easily adapted to the dDAC to measure the properties of a sample under the varying load/pressure conditions. This capability addresses the sparsely studied regime of dynamic phenomena between static research (diamond anvil cells and large volume presses) and dynamic shock-driven experiments (gas guns, explosive, and laser shock). We present an overview of a variety of experimental measurements that can be made with this device.
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