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Combined TEM Test Specimen - Gold / Graphitized Carbon
A holey carbon film is shadowed with gold and graphitized carbon particles are deposited.
These particles viewed over the holes may be used for assessment of factors limiting the
microscope performance. The evaporated gold forms small polycrystalline islands and within
these islands lattice fringes can be resolved.
This specimen is also used for contamination measurement rates in the electron microscope
by noting the deposition rate of carbon within the holes found in the gold film.
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| Prod #
| Description
| Unit
| Price
| Order / Quote
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| 638
| Combined TEM Test Specimen on 3mm grid
| each
| $103.45
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aluminum
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Diffraction Standard - Camera Length
Evaporated Aluminum
The nominal value of the effective camera length of an EM operating in the selected
area mode is not sufficiently accurate for calculations of lattice spacing. The actual value of camera
length must be calibrated at the same accelerating voltage and objective lens setting by reference to a
known substance with well defined diffraction spacings. A normal specimen is evaporated film of aluminum with a thickness of around 31nm.
Very small crystallite size yields ring patterns suitable for calibration. The specimen is supplied with a
list of the principal lattice spacings. Made on a G400, 400 square mesh copper Gilder grid.
PELCO® Technical Notes, Diffraction Standard Evaporated Aluminum, Product No. 619 (417KB PDF)
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| Prod #
| Description
| Unit
| Price
| Order / Quote
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| 619
| Evaporated Aluminum on 3mm grid
| each
| $24.50
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Image Rotation
Molybdenum Trioxide
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When changing from a selected area image of a specimen to a diffraction pattern, the strength of
the intermediate lens is changed, producing an image rotation between the image and the diffraction
pattern. This rotation is seen by photographing a crystal whose shape gives a clear indication of
orientation. A molybdenum trioxide crystal is suitable for this purpose. Supported on a G400, 400
square mesh copper Gilder grid.
PELCO® Technical Notes, Image Rotation Molybdenum Trioxide
Crystals, Product No. 625 (469KB PDF)
| Prod #
| Description
| Unit
| Price
| Order / Quote
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| 625
| Molybdenum Trioxide, on 3mm grid
| each
| $18.90
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500nm Magnification Calibration Diffraction Grating Replica
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Carbon replica with Au/Pd shadowing on a cross line grating with well-defined trench type grooves.
Pitch or "d" spacing for parallel line grating is 500nm. The trench type groove makes it easy to
measure the pitch. Typically, cross line grating is used up to 100,000x with 2,000
lines/mm in both directions. Instructions included. Made on a G400, 400 square mesh copper grid.
PELCO® Technical Notes, 2000 l/mm Cross Line Grating Replica, Product No. 677 (109KB PDF)
Magnification Calibration Calculator, Product No. 253
| Prod #
| Description
| Unit
| Price
| Order / Quote
|
| 677
| 500nm Grating Replica, Cross line grating, 2000 l/mm, on 3mm grid
| each
| $45.50
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500nm Diffraction Grating Replica with Latex Spheres
magnification calibration specimen
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Two-in-one; this standard for calibration provides a double-check of the accuracy of
magnification calibration. It is particularly useful at higher magnification; up to
150,000x. The latex sphere size is 261nm and the carbon cross line grating replica with
Au/Pd shadowing has a pitch or "d" spacing of 500nm or 2000 lines/mm. Replica has well-defined
trench type grooves, which makes it easy to measure the 500nm pitch. Supplied on a G400, 400
square mesh copper grid.
PELCO® Technical Notes, 500nm Diffraction Grating Replica with Latex Spheres, Product No. 673 (75KB PDF)
Magnification Calibration Calculator, Product No. 253
| Prod #
| Description
| Unit
| Price
| Order / Quote
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| 673
| 500nm Diffraction Grating Replica with Latex Spheres, 2000 l/mm, on 3mm grid
| each
| $45.90
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606
607
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Magnification Calibration
Diffraction Grating Replicas
Carbon replicas with Au/Pd shadowing of diffraction line gratings, parallel line, waffle pattern gratings.
Made on a G400, 400 square mesh copper Gilder grid. Typically, parallel is used up to ~40-50,000x, while the
waffle is used up to ~80-100,000x. Parallel line gratings are 2,160 lines/mm (54,864 lines/inch). The
waffle is 2,160 lines/mm in both directions. Line or "d" spacing for parallel line grating is 462.9nm.
Instructions included.
PELCO® Technical Notes, Magnification Calibration Diffraction Grating
Replica, Product No. 606 (PDF)
PELCO® Technical Notes, Magnification Calibration Diffraction Grating
Replica, Product No. 607 (PDF)
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| Prod #
| Description
| Unit
| Price
| Order / Quote
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| 606
| Grating Replica, Parallel, 2160 l/mm, on 3mm grid
| each
| $43.90
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| 607
| Grating Replica, Waffle, 2160 l/mm, on 3mm grid
| each
| 53.00
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enlarged section
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Diffraction Grating Replica with Latex Spheres
magnification calibration specimen
Two-in-one; this standard for calibration provides a double-check of the accuracy of
magnification calibration. It is particularly useful at higher magnification. The latex sphere size is
0.261 µm and the carbon grating replica with Au/Pd shadowing is 2160 lines/mm. Supplied on a G400,
400 square mesh copper Gilder grid.
PELCO® Technical Notes, Magnification Calibration Latex Spheres on Diffraction Grating Replica (PDF)
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| Prod #
| Description
| Unit
| Price
| Order / Quote
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| 603
| Diffraction Grating Replica and Latex Calibration Standard
| each
| $49.90
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Gold Shadowed Latex
These are latex particles of 0.204µm diameter
shadowed with a fairly heavy coating of gold. The gold forms islands of strongly scattering material
and produces a suitable test object for STEM.
PELCO® Technical Notes, Gold Shadowed Latex Point Separation
Resolution Test, Product No. 628-B (PDF)
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| Prod #
| Description
| Unit
| Price
| Order / Quote
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| 628-B
| Gold Shadowed Latex, 3.05mm grid
| each
| $70.05
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