Super black is a surface treatment developed at the National Physical Laboratory (NPL) in the United Kingdom. It absorbs approximately 99.6% of visible light at normal incidence, while conventional blackpaint absorbs about 97.5%. At other angles of incidence, super black is even more effective: at an angle of 45°, it absorbs 99.9% of light.
Applications of super black are in specialist optical instruments for reducing unwanted reflections. The disadvantage of this material is its low optical thickness, as it is a surface treatment. As a result, infrared light of a wavelength longer than a few micrometers penetrates through the dark layer and has much higher reflectivity. The reported spectral dependence increases from about 1% at 3 µm to 50% at 20 µm.[3]
In 2009, a competitor to the super black material, Vantablack, was developed based on carbon nanotubes. It has a relatively flat reflectance in a wide spectral range.[4]
In 2011, NASA and the US Army began funding research in the use of nanotube-based super black coatings in sensitive optics.[5] Nanotube-based superblack arrays and coatings have recently become commercially available.[6]
^"Mini craters key to 'blackest ever black'". Newscientist.com. 6 February 2003. Retrieved 2015-07-14.
^. January 2003. Archived from the original on 2005-06-27.
^Brown, Richard J. C.; Brewer, Paul J.; Milton, Martin J. T. (2002). "The physical and chemical properties of electroless nickel – phosphorus alloys and low reflectance nickel – phosphorus black surfaces". Journal of Materials Chemistry. 12 (9): 2749. doi:10.1039/b204483h.
^"NASA Develops Super-Black Material That Absorbs Light Across Multiple Wavelength Bands". Nasa.gov. 2011-11-08. Retrieved 2015-07-14.
^Nanostructured Super-Black Optical Materials 10/23/2013 March 2, 2014, at the Wayback Machine
^"Aligned Carbon Nanotube Arrays and Forests on Substrates". Nano-lab.com. Retrieved 2015-07-14.
External linksedit
Beckhusen, Robert (December 24, 2012). "Army Goes Goth with "'Super-Black' Materials". Wired.
Quick, Darren (Nov 9, 2011). "NASA's new super-black nanotube-based material is good news for star-gazers". New Atlas.
"Super Black Coatings on a Mission". Paint Square. August 19, 2014. Part of NASA's Materials Coating Experiment
super, black, surface, treatment, developed, national, physical, laboratory, united, kingdom, absorbs, approximately, visible, light, normal, incidence, while, conventional, black, paint, absorbs, about, other, angles, incidence, super, black, even, more, effe. Super black is a surface treatment developed at the National Physical Laboratory NPL in the United Kingdom It absorbs approximately 99 6 of visible light at normal incidence while conventional black paint absorbs about 97 5 At other angles of incidence super black is even more effective at an angle of 45 it absorbs 99 9 of light Contents 1 Technology 2 See also 3 References 4 External linksTechnology editThe technology to create super black involves chemically etching a nickel phosphorus alloy 1 2 Applications of super black are in specialist optical instruments for reducing unwanted reflections The disadvantage of this material is its low optical thickness as it is a surface treatment As a result infrared light of a wavelength longer than a few micrometers penetrates through the dark layer and has much higher reflectivity The reported spectral dependence increases from about 1 at 3 µm to 50 at 20 µm 3 In 2009 a competitor to the super black material Vantablack was developed based on carbon nanotubes It has a relatively flat reflectance in a wide spectral range 4 In 2011 NASA and the US Army began funding research in the use of nanotube based super black coatings in sensitive optics 5 Nanotube based superblack arrays and coatings have recently become commercially available 6 See also editVantablack Emissivity Black hole Black bodyReferences edit Mini craters key to blackest ever black Newscientist com 6 February 2003 Retrieved 2015 07 14 Highly Absorbing Surfaces for Radiometry January 2003 Archived from the original on 2005 06 27 Brown Richard J C Brewer Paul J Milton Martin J T 2002 The physical and chemical properties of electroless nickel phosphorus alloys and low reflectance nickel phosphorus black surfaces Journal of Materials Chemistry 12 9 2749 doi 10 1039 b204483h NASA Develops Super Black Material That Absorbs Light Across Multiple Wavelength Bands Nasa gov 2011 11 08 Retrieved 2015 07 14 Nanostructured Super Black Optical Materials 10 23 2013 Archived March 2 2014 at the Wayback Machine Aligned Carbon Nanotube Arrays and Forests on Substrates Nano lab com Retrieved 2015 07 14 External links editBeckhusen Robert December 24 2012 Army Goes Goth with Super Black Materials Wired Quick Darren Nov 9 2011 NASA s new super black nanotube based material is good news for star gazers New Atlas Super Black Coatings on a Mission Paint Square August 19 2014 Part of NASA s Materials Coating Experiment Magic Black Vacuum Black Advanced coatings Acktar Inorganic thin coating deposited using vacuum deposition technology Retrieved from https en wikipedia org w index php title Super black amp oldid 1211894283, wikipedia, wiki, book, books, library,
