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A comment on Metamaterials, AI, and the Road to Invisibility Cloaks.

Re:Metamaterials, AI, and the Road to Invisibility Cloaks by A_D_E_P_T on Monday September 22, 2025 @07:35AM (#45332001)
You don't need metamaterials. There are various patents on "invisibility cloak" systems, and most of them use screens and cameras to project what's behind the wearer onto the front-facing screen, e.g.: https://patents.google.com/patent/WO2016160588A1

Some others, mostly intended for military vehicles, aim to match surface IR emissions to the background.

Using metamaterials -- which need to be printed or, even worse, made with lithography techniques -- adds unnecessary cost and vastly increases complexity.

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Re:Metamaterials, AI, and the Road to Invisibility Cloaks by nine_k on Monday September 22, 2025 @09:48AM (#45333438)
Screens have a very limited range of brightness. More importantly, they only project a picture in one direction, so, if you can move laterally, you'll notice that it's a flat picture.

If metamaterials can alleviate any of that to some degree, they could make a form of invisibility cloak covering large objects practical.

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Re:Metamaterials, AI, and the Road to Invisibility Cloaks by Annabella_W on Monday September 22, 2025 @10:52AM (#45334305)
Agree, both screens and metamaterials for this application have their pros and cons. Manufacturing metamaterials at a large scale is an area I'm looking into next!
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