The first experimental image of lithium atoms from a transmission electron microscope: the image shows the arrangement of lithium ions among cobalt and oxygen atoms in the compound lithium cobalt oxide.
The structure of lithium cobalt oxide: layers of lithium lie between slabs of octahedrons formed by cobalt and oxygen atoms.
One Angstrom Microscope’s observations of the smallest, lightest metal atoms are a first for electron microscopy
For the first time researchers have used a transmission electron microscope -- the One Angstrom Microscope (OÅM) at the Department of Energy’s National Center for Electron Microscopy (NCEM) at Lawrence Berkeley National Laboratory -- to image lithium atoms. Only atoms of hydrogen and helium are smaller and lighter than those of lithium, which under ordinary conditions is not a gas but a soft, white metal.
Yang Shao-Horn of the Department of Mechanical Engineering at the Massachusetts Institute of Technology and Michael O’Keefe of Berkeley Lab’s Materials Sciences Division used the OÅM to simultaneously resolve columns of lithium, cobalt, and oxygen atoms in the compound lithium cobalt oxide (LiCoO2). They and their colleagues report their work in the July, 2003 issue of the journal Nature Materials, in a report currently accessible online.
Paul Preuss | EurekAlert!
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