Vantablack, The World’s Darkest Material Just Got Darker!
Black is the darkest color right? But not every material that is black will be the world’s darkest material, that crown belongs to Vantablack, a coating made of carbon nanotubes that is so dark that whatever surface you put it on it will make you feel like you are staring into the void.
The engineers who have made it reveal that the size of each of the nanotube used in this material is 1/3500 part of the diameter of a single human hair! There are millions of them added together in this.
Previously, the world’s darkest material was able to absorb about “99.965% of incident visible light,” and that is less than what it can absorb now. In fact, the level of light absorption it manages is so high that spectrometers are unable to measure it at this point!
Vantablack is not a black paint, pigment or fabric, but is instead a functionalized ‘forest’ of millions upon millions of incredibly small tubes made of carbon, or carbon nanotubes. Each nanotube in the vantablack forest has a diameter of around 20 nanometres (that’s about 3,500 times smaller than the diameter of the average human hair), and are typically from around 14 microns to 50 microns long. A surface area of 1 cm2 would contain around 1,000 million nanotubes.
The idea of this material has been pretty popular among a variety of industries. For instance artists want to use it in sculptures and military wants it for stealth coating on soldier uniforms, helicopters, weapons and vehicles.
Check out the video above to see how dark Vantablack really is.