This document discusses invisibility cloaking technology. It defines cloaking as making visible things invisible using either metamaterials or an invisibility cloak system. There are two types of invisibility cloaking: 1) Using metamaterials to control light reflection properties to make objects invisible, and 2) An invisibility cloak system using a video camera, computer processor, and image projector to project background images to visually replace invisible stationary objects. Potential applications include cloaking military vehicles, making buildings invisible, and improving wireless signals by allowing waves to flow around objects.

1. BY
Pradeep
(Aurora’’s ATRI, hyderabad)

2. Overview
Definition
Types
Description
Applications
Future scope

3. Definition
 Invisibility is the state of an object that cannot be
seen., Invisibility is often considered to be the supreme
form of camouflage.
 Cloaking is a revolutionary technology for making
visible things/persons invisible by using either
artificial “meta-materials” or invisibility cloak system.

4.  CLOAKING is the ultimate form of camouflage.
 Camouflage is a natural practice in case of animals
since 1000’s of years & also can be practiced now a days
artificially for hiding purposes.

6. TYPES
Invisibility by cloaking can be performed in
2 ways
i.
By using meta-materials and
ii.
Invisible clock system of image projection

7. DESRIPTION
we know Objects/living things can be called
‘’ VISIBLE’’ only when the reflected rays from them
reaches human eyes.

8. i.
To make visible things “invisible” we need to
consider the law of reflection of light
property, which is obtained by metamaterials
(material cloaking).

9. 

10.  Metamaterials are artificial materials engineered to
have properties that may not be found in natural
materials.
Metamaterials can :
 create negative index of refraction
 guide wave in desired direction

12. “Metamaterials” are tossing the laws of physics out the
window.

13. A picture from “PREDATORS” movie that has INVISIBILITY kind of
technology similar to CLOAKING USING METAMATERIALS

15. ⅱ. INVISIBILITY CLOAK SYSTEM OF IMAGE
PROJECTION
 This is generally used for making visible
stationary objects / buildings invisible.
 This system utilizes a high efficiency



VIDEO CAMERA ,
COMPUTER PROCESSER ,
IMAGE PROJECTOR .

18. ‘INFINITY TOWER’ an “invisible skyscraper” IN SOUTH
KOREA (under construction)

22.  Improving the range of wireless devices by allowing
waves to bend and flow around obstructing objects.
 Making a large building invisible so that the park on
the other side can be seen.
 Cloaked military and commercial vehicles.

23. THANK YOU