Scatterings
“Cakes” of Carbon Nanotubes Could Measure Terahertz Power
NIST researchers created arrays of extra-long carbon nanotubes that absorb virtually all radiation at these wavelengths—an important step in designing appropriate radiometric detectors.
“Cupcakes” of vertically aligned carbon nanotube arrays (VANTAs) grown on silicon substrate, which appears blue in the photo.
To use far-infrared and terahertz light effectively, scientists need to measure its power properly. Researchers at the U.S. National Institute of Standards and Technology (NIST; Boulder, Colo., U.S.A.) created arrays of extra-long carbon nanotubes that absorb virtually all radiation at these wavelengths—an important step in designing appropriate radiometric detectors (Appl. Opt. 50, 4099; doi: 10.1364/AO.50.004099).
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