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Published February 15, 2005 | public
Journal Article

Diffraction, crystallography and microscopy beyond three dimensions: structural dynamics in space and time

Zewail, A. H.


In this article we highlight recent developments of ultrafast electron diffraction and crystallography at Caltech. These developments have made it possible to resolve transient structures, both spatially (0.01 Å) and temporally (picosecond and now femtosecond), in the gas phase and condensed media—surfaces, interfaces, and crystals—with wide-ranging applications. With the extension to ultrafast electron microscopy, discussed here and elsewhere, we present an overview of one major research area at our centre, the Laboratory for Molecular Sciences.

Additional Information

© 2004 The Royal Society. We gratefully acknowledge the generous support by the National Science Foundation for building the new generations of UED. Partial support was provided by the Air Force Office of Scientific Research and the Office of Naval Research. I thank Vladimir Lobastov and Ramesh Srinivasan, and all of the members of the 'diffraction group', both present and past, for their efforts and for believing in making this vision possible. This paper is based on the keynote lecture given at the Discussion Meeting. Some parts are adapted from the original references by the Caltech group.

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