TEM calibration specimen, gold and graphitised carbon

This test specimen is made on a holey carbon film which has been shadowed with gold and a coating of graphitised carbon particles. Particles protruding over the edge of a hole are best for testing high resolution performance. The evaporated gold forms small poly-crystalline islands and within these islands lattice fringes can be resolved. This specimen is also used to measure contamination rates in the electron microscope by noting the deposition rate of carbon within the holes of the gold film.

User note for a combined TEM test specimen, S010.