Diacell® LeverDAC-Mini
FTIR, Biology &Forensic, Pmax= 30 GPa, T = 300 K, WD = 7 mm, A = 52°
Diacell® LeverDAC Series
- The Diacell® LeverDAC-Mini is based on a leverage mechanism designed to bring the diamond anvils together. This is the original design of diamond anvil cells
- Suitable for analytical use, and particularly useful for biological applications studies involving proteins, bacteria and foods.
- The cell is specially suited for any high pressure optical studies. It has a numerical aperture of 0.44 and a 7 mm working distance
- The lever arm drive unit can be disconnected from the cell to facilitate interfacing to spectrometers
- Maximum pressures of up to above 30 GPa may be obtained with the Diacell® LeverDAC-Mini
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Description
The Diacell® LeverDAC-Mini is strongly constructed. Pressure is generated by means of a hand wheel and screw acting on disc springs. These in turn actuate a lever and presser plate mechanism. The lower presser plate drives a piston on which one of the diamond anvils is mounted. The opposing anvil is held on a fixed plate. The Diacell® LeverDAC-Mini has been designed with particular attention to ease of operation.
The numerical aperture (NA) of the Diacell® LeverDAC-Mini is 0.44 which matches well the NA’s of most FTIR instruments. Hence no beam condenser is needed.
The Diacell® LeverDAC–Mini is shipped aligned and ready for use, and included are two tubes which allow evaporated liquid nitrogen to be passed around the anvils thus providing cooling usefully at low temperatures suitable for work of a biological nature.
Applications
The Diacell® LeverDAC-Mini is suitable for analytical use, and particularly useful for biological applications. This diamond anvil cell was designed for analytical and forensic applications in which the primary requirement is to be able to spread a small specimen over a wider area so that it may be more readily studied by spectroscopic and other means. Its particular appeal, especially in the forensic field, lies in the fact that the sample is not adulterated in any way, and is recoverable directly. Only very small samples are required: they may be loaded and compressed directly. Alternatively, and also for liquid samples, the sample may be held within a thin metal gasket having a central hole of about 0.5 mm diameter.
The Diacell® LeverDAC-Mini is also particularly suitable for biological studies involving proteins, bacteria and foodstuffs. For applications such as spreading out small flakes of paint, surprisingly high loads are needed.
Specifications
| Cell Material | AISI 440C |
| Anvil Support Plate | Tool Steel – integrated |
| Pressure Mechanism | Lever Arm Drive |
| Maximum Pressure | 30 GPa |
| Temperature Range | 300 K |
| Top Angle | 52° Conical |
| Bottom Angle | 52° Conical |
| Lateral Access | N/A |
| Heating | N/A |
| Cooling | Evaporated Liquid Nitrogen |
| DAC Diameter | 26 mm |
| DAC Height | 24.5 mm |
| Lever Arm Length / Width | 120 mm / 64 mm |
| Working Distance to Sample | 7 mm |
| Numerical Aperture | 0.44 |
| DAC Weight | 70 g |
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.
Documents
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
Technical Drawing
Please contact us for further details on the engineering drawings.
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.
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Diamond Anvils 2.5 mm Diacell® design diamond anvils Product code: [P00131] |
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Steel Anvil Rings Anvil ring for the 2.5 mm diamond anvils Product code: [M50014] |
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Lower Anvil Support Plate 52 degree, AISI 440C Hardened seat Product code: [M65003] |
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Upper Anvil Support Plate Hemisphere Seat, 52 Degrees, AISI 440C Hardened Product code: [M65004] |
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Gasket Blanks Steel gasket blanks, 5.00 mm diameter; 0.25mm thick Product code: [P00110] |
FAQs
What is the maximum pressure I can achieve with the LeverDAC-Mini and a given culet size?
| Culet size (µm) | 200 | 300 | 400 | 500 | 600 | 800 | 1000 |
| Pmax (GPa) (*) | N/A | 74 | 48 | 31 | 21 | 12 | 8 |
(*) The Pmax values are only indicative. The maximum pressure achievable with a DAC is influenced by many others experimental parameters, like the gasket characteristics (material, thickness and hole size) or the pressure transmitting medium.
How can I cool down the Diacell LeverDAC Mini?
Technically, this DAC is not designed for true cryogenic applications. For cryogenic-compatible cells, please visit our website at www.almax-easyLab.com. However, the Diacell LeverDAC Mini does offer two modes of low-temperature operation.
Basic Cooling Method (Cooling the Central Insert)
The Diacell LeverDAC Mini can be cooled using the following method:
- Two cooling tubes are included, which can be screwed into the lateral gas inlets on the drive unit.
- By passing evaporated liquid nitrogen through these tubes, the temperature can be reduced to around 120 K.
- Four plugs are provided to seal the remaining lateral holes in the central insert.
Please note: For low-temperature applications, the DAC must be housed in either a vacuum jacket or an enclosure with dry gas to avoid water and carbon dioxide build up from the surrounding atmosphere.
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