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SEM Resolution, High Resolution,
Ultra High Resolution and
Low Voltage Resolution

Gold on Carbon Test Specimens

Scanning electron microscopy resolution is tested in terms of a combination of criteria, namely resolved gaps and the number of gray levels in the image. This is to ensure that the resolution has not been distorted by using the contrast to maximize visibility of edges. High resolution images ideally should show fine detail together with a lack of noise evidenced by a good range of gray levels.
Three special ultrahigh resolution calibration specimens, gold on carbon, are excellent for SEM and FESEM resolution calibration.

PELCO® Technical Notes for Gold on Carbon SEM Resolution Test Specimens (pdf)

gold on carbon test specimen
see mount selections, types A-P

Resolution Test Specimen, Gold on Carbon 1

particle size range from approximately 5nm to 150nm

Each specimen has a square grid pattern with large crystals in the center of each square and very fine crystals at the edges of each grid (as illustrated). Thus, medium and high resolution gap tests are performed on the same specimen. The larger crystals show facets which allow assessment of the gray level reproduction available at high resolution.

Prod #DescriptionUnitPriceOrder / Quote
617
Resolution Gold on Carbon, Specimen 1, Unmounted
each
$150.00
Qty:
617-A
Resolution Gold on Carbon, Specimen 1, Mount A
each
155.00
Qty:
617-B
Resolution Gold on Carbon, Specimen 1, Mount B
each
155.00
Qty:
617-C
Resolution Gold on Carbon, Specimen 1, Mount C
each
155.00
Qty:
617-D
Resolution Gold on Carbon, Specimen 1, Mount D
each
155.00
Qty:
617-E
Resolution Gold on Carbon, Specimen 1, Mount E
each
155.00
Qty:
617-G
Resolution Gold on Carbon, Specimen 1, You Supply Mount
each
253.00
Qty:
617-K
Resolution Gold on Carbon, Specimen 1, Mount K
each
155.00
Qty:
617-L
Resolution Gold on Carbon, Specimen 1, Mount L
each
155.00
Qty:
617-M
Resolution Gold on Carbon, Specimen 1, Mount M
each
155.00
Qty:
617-O
Resolution Gold on Carbon, Specimen 1, Mount O
each
155.00
Qty:
617-P
Resolution Gold on Carbon, Specimen 1, Mount P
each
155.00
Qty:

scanning electron microscopy test specimen
see mount selections, types A-P

High Resolution Test Specimen, Gold on Carbon 2

particle size range from <3nm to 50nm

Particularly suited for assessing the image quality of high resolution SEMs, such as those fitted with a field emission source. A magnification of at least x80,000 is required to clearly resolve the gold particles.

Prod #DescriptionUnitPriceOrder / Quote
617-2
High Resolution Gold on Carbon Spec. 2, Unmounted
each
$377.60
Qty:
617-2A
High Resolution Gold on Carbon Spec. 2, Mount A
each
383.00
Qty:
617-2B
High Resolution Gold on Carbon Spec. 2, Mount B
each
383.00
Qty:
617-2C
High Resolution Gold on Carbon Spec. 2, Mount C
each
383.00
Qty:
617-2D
High Resolution Gold on Carbon Spec. 2, Mount D
each
383.00
Qty:
617-2E
High Resolution Gold on Carbon Spec. 2, Mount E
each
383.00
Qty:
617-2G
High Resolution Gold on Carbon Spec. 2, You Supply Mount
each
495.00
Qty:
617-2K
High Resolution Gold on Carbon Spec. 2, Mount K
each
383.00
Qty:
617-2L
High Resolution Gold on Carbon Spec. 2, Mount L
each
383.00
Qty:
617-2M
High Resolution Gold on Carbon Spec. 2, Mount M
each
383.00
Qty:
617-2O
High Resolution Gold on Carbon Spec. 2, Mount O
each
383.00
Qty:
617-2P
High Resolution Gold on Carbon Spec. 2, Mount P
each
383.00
Qty:

sem ultrahigh gold on carbon
see mount selections, types A-P

Ultra High Resolution Test Specimen, Gold on Carbon 3

particle size range from <2nm to 30nm

For ultra high resolution performance testing, this specimen has a smaller gold island particle size compared to the 617 specimen described previously. Suitable for testing field emission SEM's at instrument magnifications of x100,000 and above.

Prod #DescriptionUnitPriceOrder / Quote
617-3
Ultra High Gold on Carbon Spec. 3, Unmounted
each
$380.00
Qty:
617-3A
Ultra High Gold on Carbon Spec. 3, Gold, Mount A
each
385.00
Qty:
617-3B
Ultra High Gold on Carbon Spec. 3, Gold, Mount B
each
385.00
Qty:
617-3C
Ultra High Gold on Carbon Spec. 3, Gold, Mount C
each
385.00
Qty:
617-3D
Ultra High Gold on Carbon Spec. 3, Gold, Mount D
each
385.00
Qty:
617-3E
Ultra High Gold on Carbon Spec. 3, Gold, Mount E
each
385.00
Qty:
617-3G
Ultra High Gold on Carbon Spec. 3, Gold, You Supply Mount
each
483.00
Qty:
617-3K
Ultra High Gold on Carbon Spec. 3, Gold, Mount K
each
385.00
Qty:
617-3L
Ultra High Gold on Carbon Spec. 3, Gold, Mount L
each
385.00
Qty:
617-3M
Ultra High Gold on Carbon Spec. 3, Gold, Mount M
each
385.00
Qty:
617-3O
Ultra High Gold on Carbon Spec. 3, Gold, Mount O
each
385.00
Qty:
617-3P
Ultra High Gold on Carbon Spec. 3, Gold, Mount P
each
385.00
Qty:

low voltage sem resolution specimen
see mount selections, types A-P

Low Voltage Resolution Test Specimen, Gold on Carbon 4

particle sizes range from 30nm to 500nm

When operating at low accelerating voltages or using older instruments, difficulties may be experienced in imaging the standard gold on carbon resolution specimens. This may be due to inferior resolution at low voltage or poor signal to noise ratio when operating at high scanning rates with small spot sizes. The larger gold islands give high contrast while retaining small gaps for resolution measurement. This makes the specimen easier to use at non-optimal operating conditions.

Prod #DescriptionUnitPriceOrder / Quote
617-4
Low Voltage Gold on Carbon Spec. 4, Unmounted
each
$167.00
Qty:
617-4A
Low Voltage Gold on Carbon Spec. 4, Gold, Mount A
each
172.00
Qty:
617-4B
Low Voltage Gold on Carbon Spec. 4, Gold, Mount B
each
172.00
Qty:
617-4C
Low Voltage Gold on Carbon Spec. 4, Gold, Mount C
each
172.00
Qty:
617-4D
Low Voltage Gold on Carbon Spec. 4, Gold, Mount D
each
172.00
Qty:
617-4E
Low Voltage Gold on Carbon Spec. 4, Gold, Mount E
each
172.00
Qty:
617-4G
Low Voltage Gold on Carbon Spec. 4, Gold, You Supply Mount
each
270.00
Qty:
617-4K
Low Voltage Gold on Carbon Spec. 4, Gold, Mount K
each
172.00
Qty:
617-4L
Low Voltage Gold on Carbon Spec. 4, Gold, Mount L
each
172.00
Qty:
617-4M
Low Voltage Gold on Carbon Spec. 4, Gold, Mount M
each
172.00
Qty:
617-4O
Low Voltage Gold on Carbon Spec. 4, Gold, Mount O
each
172.00
Qty:
617-4P
Low Voltage Gold on Carbon Spec. 4, Gold, Mount P
each
172.00
Qty:

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Page Last Updated: May 15, 2008