SEM resolution test standards, gold on carbon
The widely used gold on carbon test specimens are excellent for SEM, FESEM and FIB resolution testing. The gold particles, with superior feature details, generate high secondary and/or backscatter electron signals with excellent contrast against the carbon background. Five different special resolution testing specimens are available with different gold particle sizes for different resolution levels.
Standard: Particle size range from ~5nm to 150nm. 6mm diameter x 2mm.
Each specimen has a square grid pattern with large crystals in the centre of each square and very fine crystals at the edges of each grid. Medium and high resolution gap tests are performed on the same specimen. The larger crystals show facets which allow assessment of the grey level reproduction available at high resolution.
High: Particle size range from <3nm to 50nm. 6mm diameter x 2mm. 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.
Ultra high: Particle size range from <2nm to 30nm. 6mm diameter x 2mm.
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.
Low voltage: Particle sizes range from 30nm to 500nm. 6mm diameter x 2mm.
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.
|Code||Title||Resolution||Mount||Pack Size||Availability||Price||Updated: 18-01-2022|
|PEL617-4A||SEM resolution test standards, gold on carbon||Low Voltage||Mount A||Each||2 weeks||AU $351.00|
|PEL617-3F||SEM resolution test standards, gold on carbon||Ultra high||Mount F||Each||2 weeks||AU $582.00|
|S015||SEM resolution test standards, gold on carbon||Standard||Mount A||Each||2 weeks||AU $327.00|
|S015H||SEM resolution test standards, gold on carbon||High||Mount A||Each||2 weeks||AU $717.00|