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November 13th, 2003
Nanotubes join the army
Researchers in the US have made a nerve agent detector using single-walled carbon nanotubes. Eric Snow and colleagues at the Naval Research Laboratory (NRL) in Washington say that their device is simple to fabricate, extremely sensitive and intrinsically selective to specific gases. The sensor could be used in industrial and military applications. Snow and colleagues first grew an interconnected network of single-walled nanotubes in a tube furnace, and then patterned them into an array of sensor electrodes using optical lithography and metal lift-off techniques.
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