The miniature diamond anvil cell with Type IIa diamonds
was designed for examining materials in an FTIR spectrometer or an IR microscope. This
instrument has been aligned before shipment.
WARNING: DO NOT APPLY PRESSURE ON THE BARE DIAMOND ANVIL SURFACES.
Store the instrument with a piece
of cardboard between the two diamond anvils to prevent abrasions. Anvils should be
inspected before and after each use.
Width: 3.79 cm across triangular plates
Height: 1.56 cm (thumb screws included)
Weight: 55 grams
GUIDE PLATE ATTACHMENT
The two small holes on the face of the lower support
(with three spindles) can be used to attach the guide plate to a slide rack accessory in
an FTIR spectrometer or on the stage of an IR microscope.
|CLEANING THE ANVILS
The anvils can be cleaned by wiping acetone or alcohol across the working
surfaces using tissue paper twisted into a pointed tip or using a tweezers
wrapped with tissue paper. Do not let the solvent come into contact with the
epoxy as it will eventually loosen the bond holding the diamond to its
mount. The undersides of the diamond anvils are cleaned by placing a drop of
acetone into the aperture and scrubbing with a round toothpick.
Failure to follow this procedure may result in damage to
- Clean the two diamond anvils as instructed above.
- Bring the two halves slowly together without placing
samples on anvils. Insert three spring-loaded thumb screws into the top plate and slowly
turn them with fingers and thumb until firm. DO NOT APPLY PRESSURE YET.
- Examining the parallelism:
Use a low power binocular microscope with transmitted white light. Parallelism is checked
by applying the light fringe technique. Only a fraction of one fringe should be visible.
- Record the background data from the diamond anvil cell and
- Disassemble the instrument slowly.
- Position the diamond anvil cell on a surface with the
triangular plate containing three spindles facing upward. Place a piece of the sample onto
the lower diamond anvil. Then bring the two halves slowly together.
- Insert three spring-loaded thumb screws into the top plate
and slowly turn the thumb screws until firm. DO NOT APPLY PRESSURE YET.
- Inspect the sample under magnification. Repeat steps 6
through 8 if necessary.
- Attach the cell to the guide plate. The guide plate may not be needed if a microscope or a beam
condenser is used.
- Flatten the sample by squeezing the assembled instrument
with fingers and thumbs using both hands. Forceful pressure can be applied. Tightening the
thumb screws can lead to unequal pressure on one end of the triangle. Pressure that is
less than parallel on the anvils can result in damage.
- Position the diamond anvil cell in the focal compartment
of an FTIR or on the stage of an IR microscope.
- Set the instrument up in transmission or absorption mode
and run spectra.
- After completing experiments, disassemble the diamond
anvil cell by loosening the screws sequentially in small increments.
- Clean the anvils and store the diamond cell as instructed.
Copyright © 2008 by High Pressure Diamond Optics, Inc.
Last updated: August 12, 2008