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Search results for invisibility cloaks

Optics & Photonics Jun 25, 2015

Interaction of tailored light with a single atom and individual nanostructures

By adapting a mode of the light field to a system under study, the interaction of light with matter can be optimized. In this context, the spatial distribution of the electric field of such a tailored mode plays an important ...

Nanophysics Jun 22, 2015

Plasmonics: Revolutionizing light-based technologies via electron oscillations in metals

For centuries, artists mixed silver and gold powder with glass to fabricate colorful windows to decorate buildings. The results were impressive, but they didn't have a scientific reason for how these ingredients together ...

Mathematics Jun 22, 2015

Mathematicians formulate equations, bend light and figure out how to hide things

The idea of cloaking and rendering something invisible hit the small screen in 1966 when a Romulan Bird of Prey made an unseen, surprise attack on the Starship Enterprise on Star Trek. Not only did it make for a good storyline, ...

Engineering Jun 17, 2015

New fog chamber provides testing options that could improve security cameras

Fog can play a key role in cloaking military invasions and retreats and the actions of intruders. That's why physical security experts seek to overcome fog, but it's difficult to field test security cameras, sensors or other ...

Optics & Photonics Jun 16, 2015

Theory turns to reality for nonlinear optical metamaterials

A research team has realized one of the long-standing theoretical predictions in nonlinear optical metamaterials: creation of a nonlinear material that has opposite refractive indices at the fundamental and harmonic frequencies ...

Astronomy May 14, 2015

Scientists discover the fluffiest galaxies

An international team of researchers led by Pieter van Dokkum at Yale University have used the W. M. Keck Observatory to confirm the existence of the most diffuse class of galaxies known in the universe. These "fluffiest ...

Nanophysics May 7, 2015

Electrons corralled using new quantum tool

Researchers have succeeded in creating a new "whispering gallery" effect for electrons in a sheet of graphene—making it possible to precisely control a region that reflects electrons within the material. They say the accomplishment ...

Other May 4, 2015

Best of Last Week – Pondering the universe as hologram, Tesla's home battery and weak sunlight link to pancreatic cancer

(Âé¶¹ÒùÔº)—It was a big week for physics as researchers at Aalto University, together with a team from Amherst College, have observed for the first time, a point-like monopole in a quantum field itself—a major step forward ...

General Âé¶¹ÒùÔºics May 1, 2015

Occam's razor redux: A simple mathematical approach to designing mechanical invisibility cloaks

Metamaterials – engineered materials with properties not found in nature – have led to an astounding range of optical, acoustic, thermodynamic, two-dimensional solid mechanics, and other types of invisibility cloaks that ...

Optics & Photonics Apr 30, 2015

No Hogwarts invitation required: Invisibility cloaks move into the real-life classroom

Who among us hasn't wanted to don a shimmering piece of fabric and instantly disappear from sight? Unfortunately, we non-magical folk are bound by the laws of physics, which have a way of preventing such fantastical escapes.

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