The Pelcotec™ CDMS Critical Dimensions and Magnification Standards are made on an ultra flat silicon substrate with a precise 50nm chromium deposition for the features up to 5µm and a combination of 50nm gold over 20nm chromium for the features sizes from 2µm to 100nm. The Cr and Au/Cr on Si provides excellent contrast both in SE and BSE imaging mode. The features are easier to determine than on etched Si standards. Since the silicon substrate, the chromium and the chromium/gold features are all conductive there are no charging issues with this calibration standard. Due to its sturdy construction the CDMS standard can be cleaned using a plasma cleaner.
The smaller features are nested for easy navigation and quick calibration. The accuracy of the features is 0.3% or better. The actual size of the standard is 2.5 x 2.5mm with a thickness of 675µm ±10µm. There is no coating on the Si surface. Each Pelcotec™ CDMS calibration standard has a unique identification number.
They are available either unmounted or mounted on SEM holders A-R. For AFM applications the Pelcotec™ CDMS is mounted on a 12mm AFM disc, for LM applications it is mounted on a 25 x 75mm glass slide.
The specimen may also be prepared on a custom mount of your choice.
Storage: Store the Pelcotec™ CDMS Calibration Standard in a vacuum desiccator.
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