Looks like being invisible is something that can come true!
Being invisible is not restricted to magicians like Harry
Potter! There are actually scientists that are currently
building a cloak of invisibility. The theoretical breakthrough
is made possible by novel substances called metamaterials.
Invented six years ago, the man-made materials are embedded with
networks of exceptionally tiny metal wires and loops. The
structures refract, or bend, different types of electromagnetic
radiation—such as radar, microwaves, or visible light—in ways
natural substances can't. Leonhardt and John Pendry of the
Imperial College London independently reported their work in
this week's issue of Science. Specially-designed "metamaterials"
built on semiconductor chips, they report, can be tuned to
divert approaching electromagnetic radiation in another
direction. "[Metamaterials] have the power to control light in
an unprecedented way," said Sir John Pendry, a theoretical
physicist at England's Imperial College London. "They ca