Dynamic Diamond Anvil Cell (dDAC): A novel device for studying the dynamic-pressure properties of materials

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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/sec ({approx}0.16 s{sup -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 ... continued below

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PDF-file: 21 pages; size: 2.6 Mbytes

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Evans, W J; Yoo, C; Lee, G W; Cynn, H; Lipp, M J & Visbeck, K February 23, 2007.

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Description

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/sec ({approx}0.16 s{sup -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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PDF-file: 21 pages; size: 2.6 Mbytes

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  • Journal Name: Review of Scientific Instruments, vol. 78, no. 7, July 5, 2007, pp. 073904; Journal Volume: 78; Journal Issue: 7

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  • Report No.: UCRL-JRNL-228395
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 940506
  • Archival Resource Key: ark:/67531/metadc902551

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  • February 23, 2007

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  • Sept. 27, 2016, 1:39 a.m.

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  • Dec. 5, 2016, 2:32 p.m.

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Evans, W J; Yoo, C; Lee, G W; Cynn, H; Lipp, M J & Visbeck, K. Dynamic Diamond Anvil Cell (dDAC): A novel device for studying the dynamic-pressure properties of materials, article, February 23, 2007; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc902551/: accessed September 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.