Research thrusts and the BRITE-EURAM project
The most performant high resolution electron microscopes nowadays achieve a resolution of about 0.2 nm so that the structural details of matter can be visualised at the atomic scale.If a resolution of 0.1 nm could be reached, most of the individual atoms of a structure could be resolved which would make high resolution electron microscopy (HREM) an extremely and unparalleled technique for the study of materials, especially for the characterisation of the structure of defects, new materials, crystalline as well as disordered and amorphous, etc. However, the potential power of the technique is still severely limited by the problem of the interpretation of the images. Thus far, the only way to obtain reliable information is by comparing simultaneously the experimental images with computer calculated images for various structure models. However, this trial and error technique requires a large amount of prior information obtained by other techniques and makes HREM much more dependent and thus much less powerful. For complicated structures such as defects, disordered and amorphous materials, hardly no reliable information can be obtained at present.