Invisibility cloaking via non-smooth transformation optics and ray tracing

We present examples of theoretically-predicted invisibility cloaks with shapes other than spheres and cylinders, including cones and ellipsoids, as well as shapes spliced from parts of these simpler shapes. In addition, we present an example explicitly displaying the non-uniqueness of invisibility cloaks of the same shape. We depict rays propagating through these example cloaks using ray tracing for geometric optics.

► Theoretically-predicted conical and ellipsoidal invisibility cloaks. ► Non-smooth cloaks spliced from parts of simpler shapes. ► Example displaying non-uniqueness of invisibility cloaks of the same shape. ► Rays propagating through example cloaks depicted using geometric optics.