24 ms·
What does the hole in the top image represent? Is that just a random hole in the material? Would it be possible to make the "opposite" of this material? Someth
by dm2 12y ago
What does the hole in the top image represent? Is that just a random hole in the material?
Would it be possible to make the "opposite" of this material? Something that reflects at near perfect efficiency? Would that just be a normal mirror?
- alok-g 12y agoAssuming you are referring to this image: http://www.independent.co.uk/incoming/article9603983.ece/alternates/w460/newblack.jpg http://www.independent.co.uk/incoming/article9603983.ece/alt... What looks like a hole in the metal foil is the portion of the metal foil with the said material applied on it. It looks like a hole in spite of the metal foil having ridges and valleys as seen on the sides where the material is not applied.
- dm2 12y agoNo, the URL was changed after I posted that comment. This is the image I was referring to: http://cdn.singularityhub.com/wp-content/uploads/2014/07/nasa-carbon-nanotubes-super-black.jpg http://cdn.singularityhub.com/wp-content/uploads/2014/07/nas... I assume it was just there to show how small carbon-nanotube fibers are. From this page: http://singularityhub.com/2014/07/19/new-super-black-light-absorbing-material-looks-like-a-hole-in-reality/ http://singularityhub.com/2014/07/19/new-super-black-light-a...