Carbon nanotubes are pretty amazing things. They’re the strongest and stiffest material on Earth: a 1 millimeter diameter thread of them can support a weight of about 7 tons. The problem is that they’re expensive (and tricky) to produce, especially in any quantity that isn’t just broken bits of tubes. The journal Science is reporting that researchers at the NanoTech Institute of the University of Texas at Dallas have come up with a way of cheaply and quickly manufacturing large sheets (we’re talking meters) of long nanotube strands that are completely transparent and stronger than steel. The sheets are “spun” out of a self-assembled nanotube forest, and can be created with fairly simple machinery at a rate of up to 10 meters per minute. Furthermore, there doesn’t seem to be any reason why the sheets couldn’t be made as long or wide as you wanted. The last picture in the series above shows a nanotube sheet supporting droplets of water and juice that weigh about 50,000 times more than the sheet itself… Pretty cool. No information on cost, though. Read the paper here (PDF).
No comments:
Post a Comment