black body absorber from vertically aligned single-walled carbon nanotubes
Among all known materials, we found that a forest of vertically aligned single-walled carbon nanotubes behaves most similarly to a black body, a theoretical material that absorbs all incident light. A requirement for an object to behave as a black body is to perfectly absorb light of all wavelengths...
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Veröffentlicht in: | Proceedings of the National Academy of Sciences - PNAS 2009-04, Vol.106 (15), p.6044-6047 |
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creator | Mizuno, Kohei Ishii, Juntaro Kishida, Hideo Hayamizu, Yuhei Yasuda, Satoshi Futaba, Don N Yumura, Motoo Hata, Kenji |
description | Among all known materials, we found that a forest of vertically aligned single-walled carbon nanotubes behaves most similarly to a black body, a theoretical material that absorbs all incident light. A requirement for an object to behave as a black body is to perfectly absorb light of all wavelengths. This important feature has not been observed for real materials because materials intrinsically have specific absorption bands because of their structure and composition. We found a material that can absorb light almost perfectly across a very wide spectral range (0.2-200 μm). We attribute this black body behavior to stem from the sparseness and imperfect alignment of the vertical single-walled carbon nanotubes. |
doi_str_mv | 10.1073/pnas.0900155106 |
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subjects | Carbon Carbon nanotubes Emissivity Infrared radiation Infrared reflection Light Nanotubes Optical reflection Physical Sciences Sorbents Sorption Spectral reflectance Specular reflection Ultraviolet reflection Wavelengths |
title | black body absorber from vertically aligned single-walled carbon nanotubes |
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