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Publication Citation: Infrared hemispherical reflectance of carbon nanotube mats and arrays in the 5 µm to 50 µm wavelength region

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Author(s): Chris Chunnilall; Aric W. Sanders; John H. Lehman; Evangelos Theocharous;
Title: Infrared hemispherical reflectance of carbon nanotube mats and arrays in the 5 µm to 50 µm wavelength region
Published: November 01, 2012
Abstract: We present the absolute infrared (5 {u}m to 50 {u}m) hemispherical reflectance of films produced from commercially available carbon nanotubes. Data were obtained using the upgraded NPL directional- hemispherical reflectance measurement facility. A brief description of this facility is presented, along with imaging and the results of the measurement of the test samples. One group of samples consisted of mats of carbon nanotubes with potassium silicate binder sprayed on copper or silicon substrates. Another group consisted of vertically aligned carbon nanotubes grown on silicon. The emphasis of our study is the evaluation of materials suitable for radiometric applications such as black coatings for thermal detectors, baffles and broadband absorbers in the infrared. Two of the materials studied exhibited the lowest reflectances so far observed in the infrared wavelength region.
Citation: Carbon
Volume: 50
Issue: 14
Pages: pp. 5348 - 5350
Keywords: carbon nanotube; hemispherical reflectance; infrared; reflectance
Research Areas: Carbon Nanotubes, Optical Properties of Materials, Radiometry, Materials Science, Physics, Terahertz Metrology