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January 30th, 2004

Scientists spy on nanotube growth

Researchers in Denmark have taken the first high-resolution videos of the growth of carbon nanofibres in a transmission electron microscope. The scientists, from Haldor Topsøe and the Technical University of Denmark, made the nanofibres by methane decomposition over nickel nanocrystals. “Recent advances in in situ techniques now allow gas-solid interactions to be studied at the atomic-level in the course of a catalytic reaction or a nanomaterial synthesis,” Stig Helveg told “The movies directly show elementary steps involved in the catalytic growth reaction."


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