The fabled cloak of invincibility used to be considered impossible for modern science, chilling out with perpetual motion up inside the clouds, but at the moment scientists are tilting at blurry windmills with a modicum of success several times a year. The most recent advance in theory comes to us from Michigan Tech, which says it could actually now cloak objects within the infrared spectrum. Previous attempts using metallic metamaterials could only bend microwave radiation, the study claims, but using tiny resonators made up of chalcogenide glass arranged in spokes around the thing (see diagram at left) researcher Elena Semouchkina and co-workers successfully hid a simulated metal cylinder from 3.5 terahertz waves. While it\’s hard to claim once we might see similar solutions for visible light, even a pragmatic application of infrared cloaking could put your night vision goggles to shame, or even block covert objects from being detected by those newfangled terahertz x-rays.
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