A black body absorber from vertically aligned single-walled carbon nanotubes
A black body absorber from vertically aligned single-walled carbon nanotubes
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DOI：
10.1073/pnas.0900155106
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发表时间：
2009-04-14
影响因子：
11.1
通讯作者：
Hata, Kenji
中科院分区：
文献类型：
--
作者：
Mizuno, Kohei;Ishii, Juntaro;Hata, Kenji
在所有已知的材料中，我们发现垂直排列的单壁碳纳米管森林的行为与黑体最相似，黑体是一种吸收所有入射光的理论材料。一个物体要想表现得像一个黑体，就必须完全吸收所有波长的光。这一重要特征在真实的材料中尚未观察到，因为材料由于其结构和组成而固有地具有特定的吸收带。我们发现了一种材料，可以在非常宽的光谱范围（0.2-200 μ m）内几乎完美地吸收光。我们将这种黑体行为归因于垂直单壁碳纳米管的稀疏性和不完美的排列。
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 mu m). We attribute this black body behavior to stem from the sparseness and imperfect alignment of the vertical single-walled carbon nanotubes.