Scientists Simplify Cloaking Tech, Can Cloak Bigger Objects
Breakthrough device represents major improvement over past efforts
Cloaking science or “transformation optics” as its more formally called has until now relied on exotic “metamaterials” to redirect light. However, a breakthrough from Purdue University has created a “tapered optical waveguide” that accomplishes the same behavior at a lower cost and without using exotic compounds.
The new cloak is not only cheaper, it also performs better — it can cloak an area of up to 100 times the wavelengths of a laser, while previous designs only managed a few times the wavelengths. Additionally, where metamaterials could only cloak part of the spectrum, this design can cloak light from a variety of wavelengths.