'Seeing' through paint
Optical traps on chip manipulate many molecules at once
(Phys.org) —Optical trapping, a technique for studying single molecules, is traditionally delicate, requiring special equipment and a soundproof room, with data collected one molecule at a time.
Researchers find way to measure speed of spinning object using light's orbital angular momentum
Scientists control the flow of heat and light in photonic crystals
Scientists from the MESA+ Institute for Nanotechnology at the University of Twente in the Netherlands and Thales Research & Technology, France, have found a way to control heat propagation in photonic nano-sized ...
Antennas in your clothes? New design could pave the way
(PhysOrg.com) -- The next generation of communications systems could be built with a sewing machine.
A breakthrough in creating invisibility cloaks, stealth technology
Controlling and bending light around an object so it appears invisible to the naked eye is the theory behind fictional invisibility cloaks.
A road of no return: Team implements the first '1-way roads' for light
Light readily bounces off obstacles in its path. Some of these reflections are captured by our eyes, thus participating in the visual perception of the objects around us. In contrast to this usual behavior ...
Mathematician models the spread—and prevention—of crime as a wave
(Phys.org)—Crime can happen anywhere, but it usually doesn't. Researchers have noticed that criminal activity seems to be concentrated in self-perpetuating hotspots. Crime leads to more crime. Then, from ...
Hiding in plain sight
A couple years ago, researchers introduced a new material that they said could make any object invisible to both radar and the human eye. Invisibility cloaking would have a major impact on defense technology, they explained, ...
Research group creates longer lived and more efficient quantum memory
Light propagation in solar cells made visible
How can light which has been captured in a solar cell be examined in experiments? Jülich scientists have succeeded in looking directly at light propagation within a solar cell by using a trick. The photovoltaics ...
Authors explore security threat of covert acoustical mesh networks in air
Researchers observe speed of propagation in non-relativistic lattice
When the speed of light depends on its direction
Light does not travel at the same speed in all directions under the effect of an electromagnetic field. Although predicted by theory, this counter-intuitive effect has for the first time been demonstrated ...