Electromagnetic cloaking is one of the exciting phenomena possible with metamaterials that have a negative permittivity and permeability. Although cloaking in the microwave frequency range has ...

Key PointsCollaborative research has advanced an understanding of how colloidal clusters form and behave in microgravityThe ...

London-based Invisibility Shield Co has spent years designing the latest versions of it ‘optical cloaking technology’, which can hide people and objects completely from view in broad daylight.

Earlier, he invented another optical cloaking device that works at a larger scale. The whole thing costs $150 and is made with standard hardware store materials. Together, the projects demonstrate ...

and the EM waves propagating in the optical direction have an infinite phase velocity. This material is used to enable the EM wave to bypass a cloaking region with omnidirectional impedance ...