Experimental observation of an extremely dark material made by a low-density nanotube array.
@article{Yang2008ExperimentalOO, title={Experimental observation of an extremely dark material made by a low-density nanotube array.}, author={Z. Yang and L. Ci and J. Bur and S. Lin and P. Ajayan}, journal={Nano letters}, year={2008}, volume={8 2}, pages={ 446-51 } }
An ideal black material absorbs light perfectly at all angles and over all wavelengths. Here, we show that low-density vertically aligned carbon nanotube arrays can be engineered to have an extremely low index of refraction, as predicted recently by theory [Garcia-Vidal, F. J.; Pitarke, J. M.; Pendry, J. B. Phys. Rev. Lett. 1997, 78, 4289-4292] and, combined with the nanoscale surface roughness of the arrays, can produce a near-perfect optical absorption material. An ultralow diffused… CONTINUE READING
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