- super absorbent material

by:Demi     2019-08-21
  -  super absorbent material
Daily Mail reporter update: NASA engineers have come up with a material that absorbs more than light at 12: 33 on November 10, 2011.
Absorbing materials usually absorb ultraviolet and visible light
But this new material can also capture infrared and far infrared.
This development has even surprised Nasa scientists and is expected to open up new areas in space technology.
The team of engineers at Nasa Goddard Space Flight Center in Greenbelt, Maryland recently reported the discovery at the SPIE Optical and optical conference.
John Hagopian, who led the team, said the reflection test was very positive, indicating that the material's absorption quality was 50 times that of its competitors.
Although other researchers reported, he said,
Perfect level of absorption, mainly in UV and visible light, our materials are almost perfect in multiple wavelength bands
From UV to far infrared.
No one else has reached this milestone yet.
This material is a thin coating made of carbon nanotubes.
Hollow more
The wall tube is about 10,000 times thinner than a strand of hair.
They stand 90 degrees away from the surface they cover, Nasa scientists call it looking like shag-pile carpet.
It can be applied to various surfaces including silicon, nitrogen silicon, titanium and stainless steel
The most commonly used materials in aerospace science instruments.
Nasa is already considering the practical application of this material.
The most obvious is the light.
Suppression of sensitive devices.
The tiny gap between the tubes collects and captures the background light to prevent it from reflecting the surface and interfering with the light that scientists actually want to measure.
Because only a small amount of light is reflected from the coating, the human eye and the sensitive detector will treat the material as black.
This material can significantly reduce the light reflected by Deep Space devices that are already working to detect the weakest and farthest light sources.
However, it is not obvious that this material can also be used as a coolant.
The darker the material, the more heat it radiates out, so the coating can be used to remove heat from the instrument and radiate it to a device in deep space.
Finally, it is much lighter than other materials that absorb less
Weight is a key factor for any payload into space.
Manuel Quetta, Goddard engineer
After writing the SPIE paper and conducting a reflection test, "We were a little surprised by the results," he said . ".
"We know it's absorbed," he added.
We just don't think there will be this absorption capacity from UV to far infrared.
Ed Wallak, a Goddard scientist, concluded: "This is a very promising material.
It is robust, lightweight and very dark.
It is less than black paint.
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