Abstract
Brief History - Probably no other technique has had quite the dramatic impact upon materials science and engineering as has the combination of electron diffraction and microscopy. The development of the modern electron microscope is an unusual outcome of wide and diverse series of experimental discoveries and theoretical concepts amongst which certainly the elegant Nobel Prize winning (1937) diffraction experiments of Davisson and Germer and Thomson ranks as one of the most significant.Although the first electron microscope was developed in Berlin, a North American instrument was built in 1939 at the University of Toronto. Soon after in 1941, RCA produced the first commercial microscopes in the USA. At first, the principal technique of sample preparation was replication, until Heidenreich at Bell Labs, maintaining the electron diffraction tradition set by Davisson, and later, Heidenreich and Sturkey, paved the way for modern thin foil microscopy with their dynamical electron diffraction theory. This accounted for the interference effects observed in images of crystals.
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