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We Are Now Invisible

We Are Now Invisible

New Infrared Invisibility Cloak Hides Tank, Makes it Look Like a Jeep

by Max Eddy | 12:59 pm, September 6th

Weapons maker BAE has recently completed a test of its new Adaptiv infra-red cloaking technology in Sweden, and hopes to show it off at the upcoming DSEI conference in the UK. With Adaptiv, vehicles and military installations can mimic the infra-red signature of their environment, making them all but invisible when viewed through night-vision systems.

At the core of Adaptiv are hexagonal plates that can quickly change their temperature. These are connected to a control system and cameras which observe the surrounding view in infra-red. Once activated, the hexagons quickly match the background. The system has a few more tricks up its sleeve as well: It can mimic the infra-red profile other vehicles making a fully loaded troop carrier at the vanguard of an invasion look like a lone Jeep. The system can also be used to identify friendly vehicles, displaying special insignia which can be seen through night vision. BAE says that the system is scalable, and could camouflage air, land, and sea vehicles as well.

Some skepticism is, of course, called for. Coupled with multiple means of detection — low light enhancement, audio, etc. — the cloaking powers of Adaptiv would almost certainly be reduced. However, BAE says that this is a planned first-step toward all-around stealth. What’s more, seeing it in action is startling. Read on after the break and watch a tank disappear.

Read on...
We Are Now Invisible

Chinese Researchers Announce Radar Invisibility Cloak with Illusion Capabilities

by Max Eddy | 12:29 pm, February 24th

A Chinese research team from Southeast University in Nanjing have announced that they have found a way to change the way radar waves interact with an object. Researchers Wei Xiang Jiang and Tie Jun Cui used advanced metamaterials, sometimes used to guide light in unique ways, to similarly guide radio waves, thus changing how the object appeared in a radar scan. The New Scientist explains the experiment:

Copper conducts electricity well and reflects incoming radio waves, giving it a bright radar signature. To alter this behaviour, the team built a device made of 11 concentric rings of circuit boards etched with small metal-lined channels that prevent electromagnetic waves reflecting away. Instead, they guide the waves in a direction that the researchers choose specifically to make the hidden object appear to have different electrical properties.

Many of you are probably saying, “so what?” Admittedly, it’s not very exciting in and of itself that some guys were able to make copper look like porcelain to radar. But then one of the researchers says the magic words that will make your ears prick up.

Similar illusion devices could eventually be used for stealth technology: for example, to “convert the radar image of an aircraft into a flying bird”, Cui says.

There’s the payoff.

Read on...
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