Researchers in the Cockrell School of Engineering at The University of Texas at Austin have been able to quantify fundamental physical limitations on the performance of cloaking devices, a technology that allows objects to ...
Optics & Photonics
Jul 5, 2016
0
493
Using the same mathematical framework as the Rochester Cloak, researchers at the University of Rochester have been able to use flat screen displays to extend the range of angles that can be hidden from view. Their method ...
Optics & Photonics
May 19, 2016
0
49
Researchers at Yale and in Europe are exploring a natural "cloaking" mechanism that allows certain elastic materials—think Jell-O, for instance—to imbibe substantial amounts of liquid droplets without changing their own ...
General Physics
May 19, 2016
0
13
What would it take to hide an entire planet? It sounds more like a question posed in an episode of "Star Trek" than in academic discourse, but sometimes the bleeding edge of science blurs with themes found in science fiction.
Astronomy
Apr 14, 2016
1
28
(Phys.org)—Ideal invisibility cloaks like those in Harry Potter may be physically impossible, a new study shows. The researchers demonstrate that even the best invisibility cloaks can hide an object from only some observers, ...
(Phys.org)—Physicists have found that invisibility cloaks that can achieve perfect invisibility when not in motion will become visible when moving at speeds of around thousands of meters per second. This is because invisibility ...
(Phys.org)—Typically when two magnets are brought close together, they either attract or repel each other due to interactions between their magnetic fields. In a new study, researchers have designed a 3D magnetic invisibility ...
(Phys.org)—Physicists have built a nanowire cage that blocks one or more wavelengths of light from either entering or escaping, yet allows liquids and gases to pass through the small gaps between the nanowires. The "optical ...
Success of the energy turnaround will depend decisively on the extended use of renewable energy sources. However, their efficiency partly is much smaller than that of conventional energy sources. The efficiency of commercially ...
Optics & Photonics
Sep 30, 2015
4
1673
Invisibility has long been one of the marvels in science fiction and fantasy – and more recently in physics. But while physicists have figured out the concept for how to make invisibility cloaks, they are yet to build a ...
General Physics
Sep 24, 2015
1
33
