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Diacell® ShearDAC

Raman Spectroscopy, Pmax = 50 GPa, T = 300 K , WD = 17.50 mm, A = 80°,  Full 360° rotation of the piston

Diacell® LeverDAC Series

  • The Diacell® ShearDAC is equipped with internal gears that enable a full 360° rotation of the piston anvil relative to the fixed cylinder anvil
  • This cell is ideal for performing spectroscopic experiments with simultaneous shear and static high-pressure
  • Maximum pressures of up to above 50 GPa can be achieved
  • Smooth rotation is obtained by an extremely careful machining of the piston and cylinder
  • Fitted with ultra low fluorescence anvils the Diacell® SherDAC may be used for Raman spectroscopy
  • The cell can also be fitted with Boehler-Almax design diamond anvils, for an enlarged observation top angle.

SKU: A22000/A22100

For more info, quotation or call: Contact us


The Diacell® ShearDAC is a diamond anvil cell ideal for performing experiments with simultaneous shear and static high-pressure up to above 50 GPa.

The cell’s design is based on the megabar diamond anvil cell Diacell® LeverDAC-Mega and allows for controlled shear. The additional gearing enables the rotation of the piston anvil relative to the fixed cylinder anvil. Using a set screw, the position and orientation of the cylinder can be fixed to prevent concurrent rotation with the piston. Extremely careful machining of the piston and cylinder allows for unhindered rotation.

It is possible to use a wide range of existing experimental techniques and pressure media with the Diacell® ShearDAC. Preparation of the cell for experiments is very much similar to those of more conventional diamond anvil cells.

The Diacell® ShearDAC was originally fabricated for J. Ciezak (US Army Research Lab) and validated on a sample of calcite at 0.5 GPa (5 kbar). Raman measurements show the onset of the phase transformation from calcite to aragonite at 10° of rotation (c.f. Ciezak, J. and Jenkins, T., Rev. Sci. Instrum. 82, 073905 (2011)).


ShearDAC [A22000] ShearDAC Plus [A22100]
Cell Material Maraging steel Maraging steel
Anvil Design Diacell Boehler-Almax
Anvil Support Plate Tungsten Carbide Tungsten Carbide
Pressure Mechanism Lever Arm Drive Lever Arm Drive
Maximum Pressure  50 GPa  50 GPa
Temperature Range 300 K 300 K
Top Angle 34º Conical 80º Conical
Bottom Angle 9º Conical 8.8º Conical
Lateral Access N/A N/A
Heating N/A N/A
Cooling N/A N/A
Lever Arm Length / Width 165 mm/ 76 mm 165 mm/ 76 mm
DAC Diameter 33 mm 44.5 mm
DAC Height 89 mm 70.5 mm
Working Distance to Sample 17.5 mm 15 mm
Numerical Aperture 0.29 0.64

Maximum pressure is dependent upon the culet size of the anvils. Almax easyLab is committed to its policy of continuous improvement. Specifications may change without notice. easyLab and Diacell are registered trademarks of Almax easyLab.


We have compiled a series of technical documents (brochures, articles, technical drawings, …) which you might find useful to help you understand this product better.

Technical documentation

Brochure ShearDAC

Technical Drawing

Please contact us for further details on the engineering drawings.


2011 – Ciezak, J. and Jenkins, T.A. – Optical cell for in situ vibrational spectroscopic measurements at high pressures and shear

Spares, Accessories and Options

Our diamond anvil cells are aligned and mechanically tested before leaving our factory on their way to your laboratory.

They also come supplied with the required basic tooling, including gasket blanks, to use them. All is contained in the transportation casing to move around laboratories easily.

Below you can find some of the accessories and spares you might also consider. If you cannot find what you need, please do not hesitate to contact our team.

Diamond Anvils
3.10 mm Diacell® design diamond anvils
Product code: [P00132]
Anvil Support Plate
34 degree, Tungsten carbide seat
Product code: [P00892], [P00893]
Diamond Anvils
3.30 mm Boehler Almax design diamond anvils
Product code: [P00539]
Anvil Support Plate
Seat, WC (H10F) Conical 85 deg. 12.8 mm
Product code: [P00542]
Gasket Blanks
10.00 mm/ 0.25 mm thick Stainless Steel gasket blanks
Product code: [P00113]


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