High pressure instrumentation: Low and negative pressures

DJ Dunstan*, NWA Van Uden, GJ Ackland

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Much work on semiconductors, soft solids and biological materials does not require the megabar capability of the diamond anvil cell; a few accurate kbar being all that may be required. Work in this range poses its own challenges, to make the experiments routine, safe and reliable, and well-calibrated. We contrast diamond anvil cells working at what for them is very low pressure, with traditional bombs working at what for them is dangerously high pressure. We describe our preferred solution, a single-diamond cell, and demonstrate its use with Raman data from ethanol under low pressure. Negative hydrostatic pressure cannot be obtained by traditional methods. However, we present data showing the Raman spectrum of ethanol apparently at the negative pressure of - 3 kbar.

Original languageEnglish
Pages (from-to)773-778
Number of pages6
JournalHigh Pressure Research
Issue number3-4
Publication statusPublished - Jun 2002
Event39th European-High-Pressure-Research-Group Meeting (EHPRG 39) - SANTANDER, Spain
Duration: 16 Sep 200119 Sep 2001


  • high pressure
  • negative pressure
  • diamond anvil cells
  • non-linear elasticity


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