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From Star Trek to Harry Potter, invisibility cloaks are a popular theme in science fiction.
And now researchers have developed a new technique that could turn the futuristic technology into a reality.
Technique - Way - Waves - Opaque - Objects
The technique involves disrupting the way that light waves pass through opaque objects, and could lead to active camouflage.
While researchers are yet to demonstrate it in practice, they are confident that experiments will soon confirm the idea.
Researchers - Technical - University - Vienna - Idea
Researchers from the Technical University in Vienna are behind the new idea for a cloaking technology.
Professor Stefan Rotter, one of the researchers working on the technology, said: 'Complex materials such as a sugar cube are opaque, because light waves inside them are scattered multiple times.
Wave - Object - Medium - Line
'A light wave can enter and exit the object, but will never pass through the medium on a straight line.
'Instead, it is scattered into all possible directions.'
Researchers - Technique - Kind
The researchers' technique is attempting to outwit this kind of light scattering.
Dr Andre Brandstötter, one of the authors of the study, said: 'We did not want to reroute the light waves, nor did we want to restore them with additional displays.
Goal - Light - Object - Object
'Our goal was to guide the original light wave through the object, as if the object was not there at all.
'This sounds strange, but with certain materials and using our special wave technology, it is indeed possible.'
Concept - Laser - Material - Energy
The concept involves shining a laser onto a material from above to pump it full of energy.
This can alter the material's properties, making it...
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