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|Photo and illustration (inset) of carbon nanotube circuits. (Courtesy of Ze'ev Abrams and Yael Hanein, Tel-Aviv University, Israel)|
Scientists in Israel are reporting the first simple and inexpensive method for building the large-scale networks of single-walled carbon nanotubes (SWCNT) needed for using these microscopic wisps in a future generation of faster, smaller, and more powerful computers and portable electronic devices.
In a study scheduled for the Sept. 12 issue of ACS' Nano Letters, a monthly journal, Yael Hanein and colleagues point out that no assembly method has solved all of the key problems involved in fabrication of large networks. Those problems range from aligning SWCNTs in a preset pattern to integrating carbon nanotube circuits into an integrated circuit environment similar to those at the heart of conventional microprocessors.
The study describes a method to manufacture and assemble large arrays of SWCNTs into an integrated circuit format. It can be used on a variety of surfaces and produced on an industrial scale. The process involves creating networks of nanotubes suspended between silicon pillars, which are then transferred onto other surfaces by direct stamping, the researchers say.
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Yael Hanein, Ph. D.
Tel-Aviv 69978, Israel
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