NASA's Super-Black Now Even Blacker
NASA's new ultra-absorbent nanomaterial, which is blacker than black thanks to its carbon nanotube coating, is now even blacker. Whether incident light is ultraviolet or far infrared, this new coating takes it all in, and gives (almost) nothing back.
( NASA Develops Super-Black Material )
The nanotech-based coating is a thin layer of multi-walled carbon nanotubes, tiny hollow tubes made of pure carbon about 10,000 times thinner than a strand of human hair. They are positioned vertically on various substrate materials much like a shag rug. The team has grown the nanotubes on silicon, silicon nitride, titanium, and stainless steel, materials commonly used in space-based scientific instruments. (To grow carbon nanotubes, Goddard technologist Stephanie Getty applies a catalyst layer of iron to an underlayer on silicon, titanium, and other materials. She then heats the material in an oven to about 1,382 degrees Fahrenheit. While heating, the material is bathed in carbon-containing feedstock gas.)
The tests indicate that the nanotube material is especially useful for a variety of spaceflight applications where observing in multiple wavelength bands is important to scientific discovery. One such application is stray-light suppression. The tiny gaps between the tubes collect and trap background light to prevent it from reflecting off surfaces and interfering with the light that scientists actually want to measure. Because only a small fraction of light reflects off the coating, the human eye and sensitive detectors see the material as black.
SF fans may recall the competitively absorbent black coating discussed in 'Doc Smith's 1939 novel Gray Lensman:
“Well, we have a black coating now that’s ninety-nine percent absorptive, and I don’t need ports or windows. At that, though, one percent reflection would be enough to give me away at a critical time. How’d it be to put a couple of the boys on that job? Have them put a decimal point after the ninety nine and see how many nines they can tack on behind it?”
(Read more about Smith's black coating)
See this article on last year's comparatively lighter NASA's Blacker-than-Black Nanotube Coating. From NASA via PopSci; thanks to Winchell Chung for the tip and the sf reference.
Scroll down for more stories in the same category. (Story submitted 11/10/2011)
Follow this kind of news @Technovelgy.
| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |
you like to contribute a story tip?
Get the URL of the story, and the related sf author, and add
Comment/Join discussion ( 3 )
Related News Stories -
How To Encode The 'Memory' Of Materials
'Just jar it, and it falls into that structure like a rubber figure returning to shape.' - Samuel R. Delany, 1966.
Surface Film Repels All Bacteria
'Most gentlemen's and ladies' gloves nowadays were constructed of infinitesimal fabricules that knew how to eject dirt...'- Neal Stephenson, 1995
Frictionless Toilet Could Save 140 Billion Liters Of Water
'The bowl was a frictionless surface...' Niven and Pournelle, 1974.
Osmiridium Sounds Like Science Fiction (But It's Not!)
I can't resist science-fictional elements. Especially when they're real.
Technovelgy (that's tech-novel-gee!)
is devoted to the creative science inventions and ideas of sf authors. Look for
the Invention Category that interests
you, the Glossary, the Invention
Timeline, or see what's New.
Cruise Autonomous Car Drives Aimlessly For An Hour
Convincing video shows progress (and limitations).
Fast Charging A Bus In 20 Seconds
'... in almost every town and village.'
Realistic Translation With The Waverly Labs Ambassador
'The speech patterns you actually hear decode the brainwave matrix which has been fed into your mind by your Babel fish.'
Biotech Firms Raised $Millions For Anti-Agathics (Longevity Drugs)
'Against Death doth no simple grow.'
Out-Of-Work Blue Collar Robots Need Your Help
'His legs relaxed with a rattle as he cut off all power below his waist... and ran his eye down the Help Wanted - Robot column...'
The Dawn Of Orbiting Manufacturing In 2020?
'It can be mass-produced only in the orbiting factories.'
Smart Contact Lenses Charges With 3D Printed Antenna
'He realized that it was not quite a clear lens.'
Segway S-Pod Fulfills Dire 1928 SciFi Prophecy
'Noiselessly, on rubber-tired wheels, they journeyed down the long aisles...'
Physicist Inspired By SciFi And Seeing Back In Time
'Here is the chronoscope... Scansion depends upon a special curved field...'
Airbnb Has AI Psychiatrist Looking At Your Facebook
'It's illegal to hold back information during a psyche test.'
NASA's Electric Motor Scooter
'...all the [lunar] prospectors took bicycles along as a matter of course'
Moving Suns To Different Galactic Neighborhoods
'...to swerve their star from its course, the globemen made use of a simple physical principle.'
Students Surveilled By School Phone Apps
Cheer up, students. '...cracking my SchoolBook had been easy.'
Massage Robot Has Soft Hands, Er, Pads
'The automatic massager began to fumble gently over my naked form.'
Medical Tattoos Are STILL Being Researched
'Following the current craze, she has had a subdermal pattern of micro-channels implanted.'
Elon Musk's Traffic Tunnel Challenge Is Boring
'The car vibrated... threading the maze of local tubes.'
More SF in the News Stories
More Beyond Technovelgy science news stories