What are the hopeful uses for making ever more absorbing black materials?
the inside of telescopes (and other optics)
New carbon nanotube-metal hierarchical material is 10x darker than Vantablack
21–30 of 69 posts
Re: New carbon nanotube-metal hierarchical material is 10x darker than Vantablack
#22Re: New carbon nanotube-metal hierarchical material is 10x darker than Vantablack
#23Serious question: How do these materials both perform against radar? Will we be seeing them as stealth paints on planes or satellites?
Follow-up serious question: if I paint my car with this stuff, can a policeman tag me with his radar gun? If I wear clothes impregnated with it, would it confuse a "smart" surveillance camera? I'm also thinking if I used it as war paint, a facial recognition cam would probably be awfully confused by what appears to be a hole in my face.
For the car case, usually police shoot their radar at your license plate since it's a flat reflective surface anyways.
Re: New carbon nanotube-metal hierarchical material is 10x darker than Vantablack
#24It is stated to be an order of magnitude better across the broad spectrum than other broad absorbers. I wonder if there are any narrow bands that it specifically excels at compared to existing materials, and how big the difference is.
This is the relevant graph I think:
Re: New carbon nanotube-metal hierarchical material is 10x darker than Vantablack
#25Well this is certainly bad news for anyone who invested $35k in a vantablack wristwatch: https://www.h-moser.com/en/collection/1801-1200-endeavour-pe...
It's a bit weird to demonstrate the colour of vantablack by adding a shine to it.
Re: New carbon nanotube-metal hierarchical material is 10x darker than Vantablack
#26Well this is certainly bad news for anyone who invested $35k in a vantablack wristwatch: https://www.h-moser.com/en/collection/1801-1200-endeavour-pe...
It's a bit weird to demonstrate the colour of vantablack by adding a shine to it.
I was thinking the same thing. You can see how they must have felt a black circle on a screen doesn't look too impressive, but this is a rather backwards way of dealing with that. (I would have added shine to the background and watch body but not the face...)
Re: New carbon nanotube-metal hierarchical material is 10x darker than Vantablack
#27Earlier quoted context omitted.
Follow-up serious question: if I paint my car with this stuff, can a policeman tag me with his radar gun? If I wear clothes impregnated with it, would it confuse a "smart" surveillance camera? I'm also thinking if I used it as war paint, a facial recognition cam would probably be awfully confused by what appears to be a hole in my face.
For the car case, usually police shoot their radar at your license plate since it's a flat reflective surface anyways.
And at headlights otherwise. But if your car has popup headlights and no front plate, and you paint it vantablack, you'd probably be close to invisible to police LIDAR (laser) guns. I'm not sure what the reflectivity of this stuff in the radio spectrum is though.
Re: New carbon nanotube-metal hierarchical material is 10x darker than Vantablack
#28Re: New carbon nanotube-metal hierarchical material is 10x darker than Vantablack
#29Serious question: How do these materials both perform against radar? Will we be seeing them as stealth paints on planes or satellites?
https://worldbuilding.stackexchange.com/questions/76278/woul...
google my friend. There are other specially formulated paints that aim to absorb the correct wavelength.
Re: New carbon nanotube-metal hierarchical material is 10x darker than Vantablack
#30Well this is certainly bad news for anyone who invested $35k in a vantablack wristwatch: https://www.h-moser.com/en/collection/1801-1200-endeavour-pe...
It's a bit weird to demonstrate the colour of vantablack by adding a shine to it.
I thought I had been sent to the wrong web site to be honest.