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MIT engineers develop a blackest black to make things disappear



Engineers at MIT have created a material that is so dark that it makes objects like diamonds invisible to the naked eye.

It is said that the material or coating is ten times darker than other very black materials. And they did it accidentally.

The material consists of carbon nanotubes or (CNTs) – tiny filaments of carbon with a mesh-like structure. The researchers bred the material on a chlorine-etched aluminum foil. They say that "the film captures more than 99.96% of incident light, making it the blackest material since records." However, during research they also found that the material absorbed nearly 99.99% of light.

CONNECTION: WHAT ARE COAL NANOTUBES AND WHAT ARE THEY USED FOR?

The material is actually part of an art exhibition titled "The Redemption of Vanity" on the New York Stock Exchange, a collaboration of MIT co-author Prof. Brian Wardle and MIT-based artist-in-residence artist Diemut Strut.

An interesting part of this art exhibit is that this new CNT material " coated a natural yellow diamond of 1

6.78 carats with an estimated value of 2 million USD ".

The effect is amazing: The diamond has been made invisible and becomes a "flat black void".

  The blackest black: MIT engineers are developing a material that is so dark that things will disappear
MIT engineers have made a material from carbon nanotubes that are 10 times blacker than anything previously reported. Source: R. Capanna, A. Berlato, and A. Pinato on Eurekalert

Researcher Wardle and co-author Kehang Cui, a former MIT postdoc, had no intention of producing this new, ultra-black material. "Instead, they experimented with ways to grow carbon nanotubes on electrically conductive materials, such as aluminum, to improve their electrical and thermal properties," the MIT press release said. They were really surprised by the color of the material.

& # 39; blackest & # 39; s Black & # 39; s; Against Vantablack

Several years ago, Surrey Nanosystems created a similar material called "Vantablack", which accounted for 99.965% of the light and later broke their own record by creating something under it a spectrometer could not be that is, it absorbed 99.99% of the light .

Ultimately, this new investigation has created the world's blackest black to date with " 99.995 percent of incident light" when the incident light is reflected from any angle.

  The blackest black: MIT engineers develop a material that is so dark that it makes things disappear
Photo of the 6-inch CNT-Al structure that was synthesized in a 1-inch oven. Source: ACS-Applied Materials and Interfaces

Prof. Wardle comments on this constant effort to make the world's blackest black material: " Our material is ten times blacker than anything ever reported."

"Someone will find a blacker material, and eventually we will understand all the underlying mechanisms and be able to construct the ultimate black," as the engineers at Surrey Nanosystems, whose Vantablack is now considered by none other than BMW Car paint is used.

Applications

These types of CNT materials are incredibly useful in the aerospace industry – Help space telescopes find out all around exoplanets, says Wardle.

Well, The astrophysicist and Nobel laureate John Mather is also interested in the project to create a "star shadow", the one Space Telescope Protects Against Light.

He asks, " Would you like to see an Earth orbiting another star?"

"We need something very black … And this black must be tough to withstand a rocket launch , Old versions were fragile fur woods, but these are more like pot scrubbers – built to endure abuse. "Researchers have applied for a patent, but the new CNT process has been freely made available to artists in a noncommercial environment.

Journal ACS Applied Materials and Interfaces published.


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