Stretching exercises shed new light on nanotubes

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Biomedical applications could exploit the natural fluorescence of the carbon nanotubes. When light is polarized along a single-walled carbon nanotube (left) this fluorescent emission is strong. Credit: NIST
Biomedical applications could exploit the natural fluorescence of the carbon nanotubes. When light is polarized along a single-walled carbon nanotube (left), this fluorescent emission is strong. Credit: NIST

Stretching a carbon nanotube composite like taffy, researchers at the National Institute of Standards and Technology and the Rochester Institute of Technology have made some of the first measurements of how single-walled carbon nanotubes (SWNTs) both scatter and absorb polarized light, a key optical and electronic property.


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