Light detectors are used extensively in daily life as brightness sensors and as receivers for remote control devices in electrical gadgets, for example. However, operating these detectors requires electrical energy, which limits their versatility.
(Phys.org) —Using little more than a few perforated sheets of plastic and a staggering amount of number crunching, Duke engineers have demonstrated the world's first three-dimensional acoustic cloak. The new device reroutes sound waves to create the impression that both the cloak and anything beneath it are not there.
Engineers have demonstrated the world's first three-dimensional acoustic cloak. The new device reroutes sound waves to create the impression that the cloak and anything beneath it are not there. The phenomenon works in all three dimensions, no matter which direction the sound is coming from or where the observer is located, and holds potential for future applications such as sonar avoidance and architectural acoustics.
(Phys.org) —A new system at SLAC National Accelerator Laboratory's X-ray laser narrows a rainbow spectrum of X-ray colors to a more intense band of light, creating a much more powerful way to view fine details in samples at the scale of atoms and molecules.
Researchers from A*STAR's Institute of Microelectronics (IME) and Nanyang Technological University (NTU) have demonstrated the smallest wavelength-tunable laser fabricated by microelectromechanical system (MEMS) technology. The laser features a wide tuning range which enables telecommunications providers to cost-effectively expand system capacity in advanced optical networks to support high data packets at ultra fast speed.
Engineers and scientists have been trying to discover the ultimate "cloaking" device – not just as a hat trick to make things invisible—but for its applications in defence technology. Now, a team from the NUS Department of Electrical & Computer Engineering led by Dr Qiu Chengwei, has successfully developed a thermal illusion device to control thermal camouflage and invisibility using thermotic materials. Thermotics is a branch of science dealing with heat and thermodynamics.
(Phys.org) —Dark matter, the mysterious substance estimated to make up approximately more than one-quarter of the mass of the universe, is crucial to the formation of galaxies, stars and even life but has so far eluded direct observation.
NASA Administrator Charles Bolden will get a firsthand look at the work being done on the Space Launch System (SLS) avionics and flight software during a visit Friday, March 14 to the agency's Marshall Space Flight Center in Huntsville, Ala.
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