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/ Technology News / 2008 / July 2008 / July 21, 2008 Now, an invisible nanotube cable that can support a human |
Now, an invisible nanotube cable that can support a human
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A recent ESA (European Space Agency) campaign has demonstrated how a technique using lasers could be employed to measure carbon dioxide (CO2) in the atmosphere. ANI
The next time you go to watch a circus, dont be surprised if you find the acrobats literally walking in the air, if an idea for an invisible cable made of carbon nanotubes works out.
London, July 21 : The next time you go to watch a circus, don't be surprised if you find the acrobats literally walking in the air, if an idea for an invisible cable made of carbon nanotubes works out.
Being narrower than the wavelength of light, nanotubes are normally invisible - as long as they are separated by more than one wavelength.
Now, according to a report in New Scientist, Nicola Pugno of the Polytechnic of Turin in Italy has calculated how many nanotubes would be needed to support a person, taking into account small defects that develop in the tubes during manufacture.
When held 5 micrometres apart, to keep them invisible, they would form a cable only 1 centimetre in diameter weighing a mere 10 milligrams per kilometre.
A plate with more closely spaced holes could slide along the cable, bringing the nanotubes closer, and so into view.
Further development of the idea might completely change acrobatic acts performed in the circus, as well as special effects used in movies.
ANI
