Nanotubes in Action
Spring 2007
| In this model of an ultra-sensitive cancer sensor,
carbon nanotubes are equipped with antibodies designed to capture tumor
markers (naturally occurring molecules indicative of a developing
tumor) floating in the bloodstream. Because the nanotubes are
comparable in size and weight to the tumor markers, the capture of just
one marker is enough to change the properties of the nanotube. This
change can then be measured by, for example, passing a current through
the nanotube. |
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