Abstract
Oxide-free Al nanoparticles and stable alumina having spherical or faceted shapes were obtained from metastable alumina by electron beam irradiation in transmission electron microscopy (TEM). Al nanodecahedra rotated, revolved, and bonded under successive electron beam irradiation without heating. The driving force for this behavior is momentum transferred from spirally trajected electrons and ions inside the TEM pole piece. A new method of producing onion-like fullerenes and intercalation from amorphous carbon film with the catalytic effect is obtained by means of an electron beam irradiation technique. We propose a possible method of controlling/manipulating nanoscopic phases and their bonding behavior by an electron beam. This approach has the potential to be applied to the fabrication of new materials and new devices.
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