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Combined TEM Test Specimen

User note for a combined TEM test specimen, S010.

The specimen consists of small gold islands on a perforated carbon film, with a light deposition of graphitised carbon. The holes on the film provide information on instrument defects by observation of the over-focused Fresnel fringe.

The graphitised carbon particles (which should be observed where they overlap the holes on the film) give a lattice spacing of 0.34nm. The gold islands provide a coarse measure of particle-to-particle resolution, and some of them will be oriented suitably to give a gold lattice image.

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