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We have examined the anisotropic terahertz response of highly aligned single-wall, double-wall, and multiwall carbon nanotubes and quantitatively characterized their performance as low-cost terahertz polarizers.
We have developed a room temperature, broadband, and polarization-sensitive terahertz detector based on a p-n junction film of highly aligned and ultralong carbon nanotubes. Direct thermoelectric measurements demonstrate the photothermoelectirc nature of the detection mechanism
We have designed, fabricated, and characterized novel p-n junction photodetectors based on macroscopic single-wall carbon nanotube films. A broadband responsivity up to ∼ 1 V/W was observed at the junction region. By controlling for substrate and doping levels, we determined that the mechanism is the photothermoelectric effect, which is supported by a theoretical model.
We have studied the photoresponse of highly aligned carbon nanotube devices in the visible, near-infrared, and mid-infrared. Using different metal combinations for electrodes, we designed detectors that work up to 10 μm under global illumination.
Spray coating is a scalable and high-throughput process for fabrication of transparent and conducting coatings (TCCs) composed of single-walled carbon nanotubes (SWNTs). Presently the fundamentals of this process are not well understood. We show that suppression of coalescence of spray droplets by sufficiently rapid heat- and mass-transfer yields homogeneous SWNT films by preventing the formation...
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