The professor of physics at City University of New York and one of the researchers who in 2016 said an invisibility cloak was theoretically impossible refused to comment on the claims because they lacked a peer-reviewed paper. The University of Lille's Mario Pelaez-Fernandez says that tuning ionic liquids to tell graphene patches what temperature they should display is very expensive. She says the use of the technology is doable.
Pelaez-Fernandez is not sure if it is possible for what is currently being displayed to become an invisibility cloak in the future. She says that the appearance of visible and IR radiation are different. What they would have is something similar to a chameleon jacket, not an invisibility, if what they are saying is true. The system would take a color input from a specific place and put it in a patch that was blocky.
The cloak is difficult to use. She says that if you stood in front of a light source you would look like a shadow. When they already have an invisibility cloak for thermal cameras, they're trying to sell it as a plausible future invisibility cloak.
Tidball and Vollebak are upfront about the fact that this is a proof of concept, despite the bold claims linking the jacket to invisibility cloaks. The thermal camouflage jacket may not be for sale for a while. The people wearing the jacket are connected to a computer. Even though it has wires sticking out of it, and it is attached to a computer, it is still exciting for me. The first iteration of clothing and technology merging will look similar to the Delorean from Back to the Future. It is going to look like it came out of a lab.
It was thought that it would take three months to develop a working thermal invisibility cloak, only for it to take twelve times that. He says that it is at least five or 10 years away from being able to be sold on the high street. He says that this is just the first step in the journey.
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