Invisible Cloak

In: Science

Submitted By hannasoph12
Words 1399
Pages 6
Abstract Invisibility has long been employed in works of science fiction and fantasy, from “cloaking devices” on spaceships in the various Star Trek series to Harry Potter’s magic cloak. But physicists and engineers are beginning to think they can actually make devices with the help of these materials. To achieve the feat of “cloaking” an object, they have developed two kind of materials that being used for invisibility, what are known as metamaterials, some of which can bend electromagnetic radiation, such as light and thermal and also optical lens, that able to bend the incoming light ray from in order to around an object, giving the appearance that it is not there at all. Introduction
Definitions and Background The desire to make objects or people invisible has a long history: to this end, many different devices have been imagined. However, it is only in relatively modern times that these plans have begun to move from fiction to reality. The recent development of metamaterials and the new design of optical lens have made accessible and opened up new possibilities for invisibility, the most promising of which are described in this article.
To be invisible in the conventional sense is to be undetectable to electromagnetic radiation within a given frequency range; light must not be scattered or absorbed. An immediate and unfortunate consequence of this requirement is that an invisible person must also necessarily be blind. In many applications, partial invisibility is sufficient. Hence, with all these kind of technology, metamaterials and optic lenses will provide the human being a wide range of new applications device and new systems whether in military sector or in automotive system such as, in Keio University, Tokyo for instance, enable the back seat driver to become invisible whenever the driver is moving backward (Gbur,2013) or when…...

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