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Proceedings Paper

Hemispherical reflectance and emittance properties of carbon nanotubes coatings at infrared wavelengths
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Paper Abstract

Recent visible wavelength observations of Multiwalled Carbon Nanotubes (MWCNT) coatings have revealed that they represent the blackest materials known in nature with a Total Hemispherical Reflectance (THR) of less than 0.25%. This makes them exceptionally good as absorbers, with the potential to provide order-ofmagnitude improvement in stray-light suppression over current black surface treatments when used in an optical system. Here we extend the characterization of this class of materials into the infrared spectral region to further evaluate their potential for use on instrument baffles for stray-light suppression and to manage spacecraft thermal properties through radiant heat transfer process. These characterizations will include the wavelength-dependent Total Hemispherical Reflectance (THR) properties in the mid- and far-infrared spectral regions (2-110 μm). Determination of the temperature-dependent emittance will be investigated in the temperature range of 40 to 300 K. These results will be compared with other more conventional black coatings such as Acktar Fractal Black or Z306 coatings among others.

Paper Details

Date Published: 28 September 2011
PDF: 11 pages
Proc. SPIE 8150, Cryogenic Optical Systems and Instruments XIII, 815002 (28 September 2011); doi: 10.1117/12.894601
Show Author Affiliations
Manuel A. Quijada, NASA Goddard Space Flight Ctr. (United States)
John G. Hagopian, NASA Goddard Space Flight Ctr. (United States)
Stephanie Getty, NASA Goddard Space Flight Ctr. (United States)
Raymond E. Kinzer Jr., NASA Goddard Space Flight Ctr. (United States)
Edward J. Wollack, NASA Goddard Space Flight Ctr. (United States)

Published in SPIE Proceedings Vol. 8150:
Cryogenic Optical Systems and Instruments XIII
James B. Heaney; E. Todd Kvamme, Editor(s)

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