This AuSome™ resolution and calibration standard comprises a silicon substrate configured with two discreet populations of large and small gold particles. The larger (117.3nm, STDV 8.4nm) population of gold particles go from individual particles all the way up to large aggregates. These islands of aggregated particles can cover micron sized areas. The large aggregates provide reference points that are easy to focus on at low magnification; thus making the smaller (27.3nm, STDV 6.3nm) particles easy to find. The small clusters of 117.3nm gold particles provide the sites to check resolution and calibration in the submicron range. The small 27.3nm gold particles represent the AuSome™ coating on the silicon substrate to provide high magnification resolution check. AuSome™ provides a continuous monolayer of gold nanoparticles with uniform particle size and inter-particles spacing over the majority of the substrate with a higher density at the edges and corner.
Unmounted or provided on an SEM specimen mount.
See mount selection A-Q
AuSome™ Resolution and Calibration Standard for SEM, FIB and FESEM
Ultra high resolution standard with known size gold particles
A challenge with nanoscale microscopy is clear imaging down to the nm level. Focus, astigmatism and working distance are important factors and slight adjustments in each can make the difference in getting a publication quality image. An additional challenge is to correctly measure features at such high magnifications. To assist the discerning microscopist, Ted Pella, Inc presents the new AuSome™ combined resolution and calibration standards for nanoscale imaging. The AuSome™ resolution and calibration standards consist of known and uniform gold particles on a silicon chip. The known particle size paired with uniformity provides a real indication of the performance of the SEM, FIB or FESEM and can be used for calibration purposes well below 100nm and goes beyond the features available on other calibration standards. The AuSome™ resolution standards are available in three versions:
The gold particles are uniformly deposited on a smooth 5x5mm silicon chip with a thickness of 0.5mm (#16008), unmounted or provided on an SEM specimen mount.