Aluminium coated carbon nanotube film for wavelength-selective surface

Mukherjee, S and Suri, A and Vani, VK and Misra, A (2013) Aluminium coated carbon nanotube film for wavelength-selective surface. In: APPLIED PHYSICS LETTERS, 103 (13).

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Abstract

We report selective optical reflectance in an aluminium (Al) coated flexible carbon nanotube (CNT) thin film over a wide range of wavelengths (500-2500 nm). Selective-wavelength surface is achieved by coating CNT surfaces with Al thin film that presented a maximum optical reflectivity of similar to 65% in the infrared region. However, CNT film alone showed a reflectance of 15-20% over a larger range of wavelengths without any structural modification, which has not been realized so far. Moreover, a tailorable reflectance in CNT is shown to be achieved by tuning various parameters, namely, the porosity of the material, angle of an incident light, and refractive index of the materials. Owing to higher infrared reflectivity and thermal diffusivity, Al coated CNT presents a potential for a high efficiency solar collector. (C) 2013 AIP Publishing LLC.

Item Type:	Journal Article
Publication:	APPLIED PHYSICS LETTERS
Publisher:	AMER INST PHYSICS
Additional Information:	copyright for this article belongs to AIP
Department/Centre:	Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Date Deposited:	06 Nov 2013 06:08
Last Modified:	06 Nov 2013 06:08
URI:	http://eprints.iisc.ac.in/id/eprint/47684

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