A program has been developed to help design a geometric representation of the atomic structure of interfaces between two crystalline structures. The C-language program run on a graphics-oriented computer has proved to be a simple precise tool to use. It provides a clear picture of the atomic positions at the interface and, simultaneously, a stereographic projection and diffraction pattern for each crystal and bicrystal. Examples of multiple twinning in the sphalerite structure and of various metal–ceramic interfaces are presented.
Guillet et al. (1991) studied this question.