Atomic Images by Electron-Wave Holography

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Science  27 Sep 1974:
Vol. 185, Issue 4157, pp. 1163-1165
DOI: 10.1126/science.185.4157.1163


Direct views of electron clouds in atoms h-ave been observed visually and photographed by means of a two-stage holographic miscroscope based on Gabor's principle of image reconstruction. Holograms are produced with 40-kilo-volt electron radiation and decoded with an optical laser. The obviation of an objective lens makes feasible a numerical aperture of 0.37 and a resolving power exceeding 0.1 angstrom.