META MATERIAL CLOAKING

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META MATERIAL CLOAKING

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METAMATERIALS

BY :- KUNAL CHAURASIA14107067METAMATERIALS CLOAKINGOn October 19, 2006, a cloak was produced that routed microwaves of a particular frequency around a copper cylinder in a way that made them emerge almost as if there were nothing there. The cloak was made from metamaterials.The device obscures a defined two dimensional region and only at a particular microwave frequencyINTRODUCTIONA PERIODIC MATERIAL THAT DERIVES ITS PROPERTIES FROM ITS STRUCTURE RATHER THAN ITS COMPONENTS. ITS A MAN MADE MATERIAL. ITSS MADE OF RINGS OF CIRCUIT BOARDS THAT SLIPSTREAM MICROWAVE TO PRODUCE CLOCKING.WHAT IS METAMATERIAL?

Metamaterial cloaking uses metamaterial as an invisibility cloak. 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. 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 itselfHOW DOES THE DEVICE WORK?HOW THE LIGHT IS BEND

HOW A CLOCKED PERSON WOULD LOOK LIKE

WHY USE METAMATERIAL? The parameter known as material response has broader range.The material response can be controlled at will.Metamaterial able to achieve negative refractive index, zero refractive index, and fractional values in between zero and one.FOR NOW THE DEVICE IS ONLY ABLE TO CAMOUFLAGE SMALL OBJECTS WITH FUNDAMENTAL PROBLEMS. CLOAKING A HUMUN-SIZED OBJECT AT VISIABLE WAVELENGHT APPEARS TO HAVE LOW PROBABILITY.LIMITATIONCURRENT DEVICE ONLY WORKS FOR ONE WAVELENGHT BUT VISIBLE LIGHT HAS MANY WAVELENGHT. ALSO SINCE ALL THE LIGHT IS REFRATED AROUND THE BODY THE USER IS ALSO RENDED BLINK. AS HE IS INVISIBLE TO OTHER, HE CANT SEE THEM EITHERLIMITATIONJAPANESE PROJECT

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