Vertically aligned nanotube arrays are sold by several firms, including NanoLab, Santa Barbara Infrared and others. Development Įarly development was carried out at the National Physical Laboratory in the UK the term "Vanta" was coined some time later. Vantablack also has greater resistance to mechanical vibration, and has greater thermal stability. The outgassing and particle fallout levels of Vantablack are low compared to similar substances, which makes it more commercially viable. Darker materials are possible: in 2019, MIT engineers developed a CVD material which reflects a tenth of the amount of light that Vantablack reflects. NASA had previously developed a similar substance that was grown at 750 ☌ (1,380 ☏), so it required materials to be more heat resistant than Vantablack. Vantablack absorbs up to 99.965% of visible light and can be created at 400 ☌ (752 ☏). ĬVD Vantablack was an improvement over similar substances developed at the time. When light strikes Vantablack, instead of bouncing off, it becomes trapped and is continually deflected amongst the tubes, eventually becoming absorbed and dissipating as heat. ĬVD Vantablack is composed of a forest of vertical tubes "grown" on a substrate using a modified chemical vapor deposition process. As of 2022 Vantablack coatings are very costly, and cannot be supplied to private individuals, and samples are only available for applications considered "valid" by the supplier. The name is a combination of the acronym VANTA ( vertically aligned nanotube arrays) and the color black. Original CVD Vantablack is no longer manufactured for commercial applications as it has been superseded by Vantablack spray coatings that offer similar optical performance in key parts of the electromagnetic spectrum. The coatings are unique in that they are not only super-black but that they retain uniform light absorption from almost all viewing angles. The original Vantablack coating was grown from a chemical vapour deposition process (CVD) and is claimed to be the "world's darkest material", absorbing up to 99.965% of visible light perpendicular to the material at 663 nm. The coatings were invented by Ben Jensen, who first publicly unveiled them in July 2014, and commercialised by the scientific team from Surrey NanoSystems. Vantablack is a brand name for a class of super-black coatings with total hemispherical reflectances (THR) below 1.5% in the visible spectrum. Wrinkled aluminium foil with a portion-equally wrinkled-coated in Vantablack
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