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
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 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 ...
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.
Authors explore security threat of covert acoustical mesh networks in air
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, ...
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 ...
Shedding light on Anderson localization
Waves do not spread in a disordered medium if there is less than one wavelength between two defects. Physicists from the universities of Zurich and Constance have now proved Nobel Prize winner Philip W. Anderson's ...
The paths of photons are random, but coordinated
(Phys.org)—Researchers at the Niels Bohr Institute have demonstrated that photons (light particles) emitted from light sources embedded in a complex and disordered structure are able to mutually coordinate ...
Study of fruit fly chromosomes improves understanding of evolution, fertility
(Phys.org) -- The propagation of every animal on the planet is the result of sexual activity between males and females of a given species. But how did things get this way? Why two sexes instead of one? Why ...
Research group creates longer lived and more efficient quantum memory
Got nectar? To hawkmoths, humidity is a cue
(Phys.org) -- Humidity emanating from a flower's nectar stores tells a moth if the flower is worth a visit, research led by a UA entomologist has discovered.
Obstacles no barrier to higher speeds for worms, researchers find
Obstacles in an organism's path can help it to move faster, not slower, researchers from New York University's Applied Math Lab at the Courant Institute of Mathematical Sciences have found through a series ...