The World's Blackest Material
This article from GE Reports presents a product called Vantablack which is a special coating made from millions of carbon nanotubes. Vantablack, which was invented by British researchers at the company Surrey NanoSystems in 2014, is the darkest material ever produced in a lab, capable of absorbing 99.96 per cent of ultraviolet, visible, and infrared light. Apparently no spectrometer in the world is powerful enough to measure how much light it absorbs. It has now been modified so that it can be sprayed on objects - a change that results in it blocking 99.8 rather than 99.96 per cent of ultraviolet, visible, and infrared light. As shown in the photos accompanying the article, this is nonetheless enough to make three-dimensional objects sprayed with Vantablack appear two-dimensional. The article identifies possible military and other applications for this new material.