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ANTI-CLOAKS. "We also note the interesting possibility of realizing "anti-cloaks", i.e., covers to be placed around a cloaked object that undo its effect by realizing an anti-transformation that neutralizes the transformation in the invisibility cloak." https://lnkd.in/eV48D4C View in LinkedIn

IMPERFECT CLOAKING. "Two teams of scientists have developed a cloak that renders objects invisible to near-infrared light...The new technology, however, does not contain metals unlike previous such "cloaks" that resulted in imperfect cloaking because of losses of light." https://lnkd.in/eEQGSaw View in LinkedIn

CHIRAL LIGHT. "One of the peculiar properties of plasmonic materials and metamaterials resides in their negative local polarizability, which is the main mechanism behind the cloaking phenomenon for reduction of total scattering." https://lnkd.in/eAziAGc View in LinkedIn

MICRO CLOAK. "This cloak is able to conceal a macroscopic object with a maximum height of 2 mm, larger than 3500 free-space-wavelength, inside a transparent liquid environment. Its working bandwidth encompassing red, green, and blue light is also demonstrated." https://lnkd.in/eRrKKFb View in LinkedIn

AN ILLUSION. "Metamaterial cloaking, based on transformation optics, describes the process of shielding something from view by controlling electromagnetic radiation. Objects in the defined location are still present, but incident waves are guided around them without being affected by the object itself." https://lnkd.in/efMKQTG View in LinkedIn

FIRST POC. "The pioneering work published in 2006 demonstrates the first experimental realization of a metamaterial-based two-dimensional cloaking device that operates in the microwave range...the first practical demonstration of the invisibility concept based on transformation optics." https://lnkd.in/enxaHbT View in LinkedIn

"METAMATERIAL CLOAKING is the usage of metamaterials in an invisibility cloak. This is accomplished by manipulating the paths traversed by light through a novel optical material. Metamaterials direct and control the propagation and transmission of specified parts of the light spectrum and demonstrate the potential to render an object seemingly invisible." https://lnkd.in/efMKQTG View in LinkedIn

PROTOTYPES. "The first experimental cloaking devices based on transformation optics were realized in the microwave frequency range (2006). Attempts to design infrared (IR) and visible band devices were made later." https://lnkd.in/enxaHbT View in LinkedIn

NO LIMITS. " There are no theoretical limitations on the size of an object hidden with an invisibility cloak based on transformation optics." https://lnkd.in/enxaHbT View in LinkedIn

BUT NEARLY THERE. "However, due to the fast development of new fields of physics, such as the physics of metamaterials, transformation optics, and plasmonics, it has become possible to manufacture cloaks which significantly reduce the scattering of the incident electromagnetic radiation by the object. But still, these materials operate in a rather narrow frequency range and only with motionless or low-speed objects." (2015) https://lnkd.in/enxaHbT View in LinkedIn