Orientated Gold Crystals
EMS Catalog #80038
The evaporated gold is induced to grow in a (100) orientation. This gives lattice plane spacings of 0.204nm for the (200) planes and 0.143nm for the (220) planes. If the crystal thickness happens to be suitable, and if the objective aperture is large enough to accept the required diffracted beams, a spacing of 0.102nm can be imaged with a suitable focal setting. This specimen thus provides a valuable test for the best microscopes in service.
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