Month: September 2022

INVISIBLE MERCEDES. "The camera shoots video on the passenger side of the car and the video is displayed in real time on the driver side of the automobile...works on the same principles of the blue screen used by TV weather forecasters and Hollywood filmmakers." (2012). Not quite metamaterials. https://lnkd.in/ecu-eS7 View in LinkedIn

DEFYING NAYSAYERS. "This is the first device that we know of that can do three-dimensional, continuously multidirectional cloaking, which works for transmitting rays in the visible spectrum." https://lnkd.in/et5Tzxh View in LinkedIn

"THE ROCHESTER CLOAK can be scaled up as large as the size of the lenses, allowing fairly large objects to be cloaked. And, unlike some other devices, it's broadband so it works for the whole visible spectrum of light, rather than only for specific frequencies." (2014). https://lnkd.in/et5Tzxh View in LinkedIn

IMPLEMENTATION. "Advances in the studies of metamaterials have pushed the development of invisibility cloaks, which suppress scattering by objects within certain frequency ranges. During recent years, there has been a transition from a purely theoretical consideration of the cloaking effect to its practical implementation." (2015). https://lnkd.in/enxaHbT View in LinkedIn

NOT THERE YET. "An ideal `invisibility cloak' has not been designed yet and, actually, the possibility of producing such a system raises serious concerns." (2015). 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

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

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

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

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