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Hemispherical Reflectance and Emittance Properties of Carbon Nanotubes Coatings at Far-Infrared WavelengthsRecent 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) less than .25%. This makes them as exceptionally good absorbers, with the potential to provide order-of-magnitude 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 to dissipate heat through radiant heat transfer process. These characterizations will include the wavelength-dependent Total Hemispherical Reflectance properties in the mid-IR and far-infrared spectral regions (2-100 micrometers). Determination of the temperature-dependent emittance will be investigated in the temperature range of 20 to 300 K. These results will be compared against other more conventional black coatings such as Acktar Fractal Black or Z-306 coatings among others.
Document ID
20180001197
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Quijada, Manuel A.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Hagopian, John G.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Getty, Stephanie
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Kinzer, Raymond (Robin) E., Jr.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Wollack, Edward
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
February 15, 2018
Publication Date
August 21, 2011
Subject Category
Composite Materials
Report/Patent Number
LEGNEW-OLDGSFC-GSFC-LN-1228
Meeting Information
Meeting: Society of Photo Optical Instrumentation of Engineers (SPIE)
Location: San Diego, CA
Country: United States
Start Date: August 21, 2011
End Date: August 25, 2011
Sponsors: International Society for Optical Engineering
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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