Tweet
Remember the story a few months ago where a "Harry Potter's cloak" was found for microwaves and the physicists said it would take years to do something similar with visible light?
Well, they're one step closer.....
The trick should also be useful for optical data storage.
Well, they're one step closer.....
Negative Refraction of Visible Light Demonstrated; Could Lead to Cloaking Devices
For the first time, physicists have devised a way to make visible light travel in the opposite direction that it normally bends when passing from one material to another, like from air through water or glass. The phenomenon is known as negative refraction and could in principle be used to construct optical microscopes for imaging things as small as molecules, and even to create cloaking devices for rendering objects invisible.
In the March 22 in the online publication Science Express, California Institute of Technology applied physics researchers Henri Lezec, Jennifer Dionne, and Professor Harry Atwater, will report their success in constructing a nanofabricated photonic material that creates a negative index of refraction in the blue-green region of the visible spectrum. Lezec is a visiting associate in Atwater's Caltech lab, and Dionne is a graduate student in applied physics.
>
For the first time, physicists have devised a way to make visible light travel in the opposite direction that it normally bends when passing from one material to another, like from air through water or glass. The phenomenon is known as negative refraction and could in principle be used to construct optical microscopes for imaging things as small as molecules, and even to create cloaking devices for rendering objects invisible.
In the March 22 in the online publication Science Express, California Institute of Technology applied physics researchers Henri Lezec, Jennifer Dionne, and Professor Harry Atwater, will report their success in constructing a nanofabricated photonic material that creates a negative index of refraction in the blue-green region of the visible spectrum. Lezec is a visiting associate in Atwater's Caltech lab, and Dionne is a graduate student in applied physics.
>
Comment