Multimode waveguides bring light around corners
(Phys.org)—Light has become one of our most powerful servants, carrying information ranging from a chat room "LOL" to an entire digitized movie through hundreds of miles of fiber optics in seconds. But ...
Silver nanocubes make super light absorbers
Microscopic metallic cubes could unleash the enormous potential of metamaterials to absorb light, leading to more efficient and cost-effective large-area absorbers for sensors or solar cells, Duke University ...
Hubble traps galactic fireflies
(Phys.org)—Luminous galaxies glow like fireflies on a dark night in this image snapped by the NASA/ESA Hubble Space Telescope. The upper central galaxy in this image is a gigantic elliptical galaxy designated ...
Making a better invisibility cloak
The first functional "cloaking" device reported by Duke University electrical engineers in 2006 worked like a charm, but it wasn't perfect. Now a member of that laboratory has developed a new design that ...
Bacterial photosynthetic reaction center harvests more light thanks to tailored organic antenna
Getting energy from sunlight: Plants have it down; humans have not quite got the knack for it. Hybrid systems made from natural and synthetic components could open new routes for harvesting solar energy. ...
RoF technology holds promise for wireless and wireline on a single platform
EU-funded scientists experimentally and theoretically validated technology for the future convergence of wireless and wireline communications into a common infrastructure.
Technology developed for visual 'cloaking' applied to enable more efficient transfer of electrons
A new approach that allows objects to become "invisible" has now been applied to an entirely different area: letting particles "hide" from passing electrons, which could lead to more efficient thermoelectric ...
Li-Fi: Edinburgh prof seeds LEDs for communication
Electromagnetic cloaking possible with ordinary plastic, study finds
A metal object can be made invisible with the help of ordinary plastic, Pekka Alitalo and Constantinos Valagiannopoulos, researchers from the School of Electrical Engineering, have shown in their study.
Physicists squeeze light on quantum scale
An international team of physicists has pushed the boundaries on ultra-precise measurement by harnessing quantum light waves in a new way.
Spacetime ripples from dying black holes could help reveal how they formed
(Phys.org)—Researchers from Cardiff University have discovered a new property of black holes: their dying tones could reveal the cosmic crash that produced them.
Combination of metamaterials and singular optics fueling research innovation
(Phys.org)—Will humans ever control lightning? Could we make the invisible visible, and vice versa?
Virus detector harnesses ring of light in 'whispering gallery mode'
By affixing nanoscale gold spheres onto a microscopic bead of glass, researchers have created a super-sensor that can detect even single samples of the smallest known viruses. The sensor uses a peculiar behavior of light ...
Scientists shed light on glowing materials
Researchers at King's College London, in collaboration with European research institutes ICFO (Barcelona) and AMOLF (Amsterdam), have succeeded in mapping how light behaves in complex photonic materials inspired by nature, ...