Molecular images by electron-wave holography

IMAGES of electron clouds in gas-phase atoms have been photographed 1,2 at a resolution limit of 0.1 Å through a two-stage holographic microscope based on Gabor's principle of image reconstruction 3 . Information encoded on to holograms with electron radiation in the first stage was transformed...

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Bibliographic Details
Published in:Nature (London) 1977-08, Vol.268 (5622), p.707-708
Main Authors: BARTELL, L. S, JOHNSON, R. D
Format: Article
Language:English
Subjects:
Humanities and Social Sciences
letter
multidisciplinary
Science
Science (multidisciplinary)
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Summary:IMAGES of electron clouds in gas-phase atoms have been photographed 1,2 at a resolution limit of 0.1 Å through a two-stage holographic microscope based on Gabor's principle of image reconstruction 3 . Information encoded on to holograms with electron radiation in the first stage was transformed into a portrayal of electron density in the second stage with the aid of an optical laser. Suitable pictures of gas-phase molecules could not be obtained because of signal-to-noise problems. These problems have now been overcome to a considerable extent and we report here the reconstruction of spherically averaged molecular images displaying light atoms in the vicinity of heavy atoms. Bond lengths can easily be measured with a ruler.
ISSN:0028-0836
1476-4687
DOI:10.1038/268707a0