Latest Negative refraction Stories
The field of metamaterials has produced structures with unprecedented abilities, including flat lenses, invisibility cloaks and even optical "metatronic" devices that can manipulate light in the way electronic circuitry manipulates the flow of electrons.
In a vacuum, light moves extraordinarily fast. Fast enough to circle the Earth seven times before you can literally blink your eye. When light travels through matter, however, it slows down by just less than a factor of five.
The world’s smallest three-dimensional optical cavities with the potential to generate the world’s most intense nanolaser beams have been created by a scientific team led by researchers with the U.S. Department of Energy (DOE)’s Lawrence Berkeley National Laboratory (Berkeley Lab) and the University of California (UC) Berkeley.
A superlens would let you see a virus in a drop of blood and open the door to better and cheaper electronics. It might, says Durdu Guney, make ultra-high-resolution microscopes as commonplace as cameras in our cell phones.
A new type of active metamaterial that incorporates semiconductor devices into conventional metamaterial structures is demonstrating an ability to have power gain while retaining its negative refraction property, a first in the world of metamaterials research.
A very simple bench-top technique that uses the force of acoustical waves to create a variety of 3D structures will benefit the rapidly expanding field of metamaterials and their myriad applicationsâ€”including "invisibility cloaks."
Advance in metamaterials leads to a new semiconductor laser suitable for security screening, chemical sensing and astronomy.
Researchers have overcome a fundamental obstacle in using new "metamaterials" for radical advances in optical technologies, including ultra-powerful microscopes and computers and a possible invisibility cloak.
Since 2000, John Pendry's work on metamaterials has been at the van guard of efforts to create a perfect image â€“ images with perfect resolution that can stem from light being moved in odd directions to create, among other tricks of the light, the illusion of invisibility.
While the researchers can't promise delivery to a parallel universe or a school for wizards, books like Pullman's Dark Materials and JK Rowling's Harry Potter are steps closer to reality now that researchers in China have created the first tunable electromagnetic gateway.
- A political dynamiter.