Authors: George Rajna
A team of researchers affiliated with several institutions in Japan has built a high-voltage transmission electron microscope small enough to reside in a university lab.  Using a familiar tool in a way it was never intended to be used opens up a whole new method to explore materials, report UConn researchers in Proceedings of the National Academy of Science.  "We put the optical microscope under a microscope to achieve accuracy near the atomic scale," said NIST's Samuel Stavis, who served as the project leader for these efforts.  Researchers have designed an interferometer that works with magnetic quasiparticles called magnons, rather than photons as in conventional interferometers.  A technique to manipulate electrons with light could bring quantum computing up to room temperature.  The USTC Microcavity Research Group in the Key Laboratory of Quantum Information has perfected a 4-port, all-optically controlled non-reciprocal multifunctional photonic device based on a magnetic-field-free optomechanical resonator.  To address this technology gap, a team of engineers from the National University of Singapore (NUS) has developed an innovative microchip, named BATLESS, that can continue to operate even when the battery runs out of energy.  Stanford researchers have developed a water-based battery that could provide a cheap way to store wind or solar energy generated when the sun is shining and wind is blowing so it can be fed back into the electric grid and be redistributed when demand is high.  Researchers at AMOLF and the University of Texas have circumvented this problem with a vibrating glass ring that interacts with light. They thus created a microscale circulator that directionally routes light on an optical chip without using magnets.  Researchers have discovered three distinct variants of magnetic domain walls in the helimagnet iron germanium (FeGe).  Magnetic materials that form helical structures-coiled shapes comparable to a spiral staircase or the double helix strands of a DNA molecule-occasionally exhibit exotic behavior that could improve information processing in hard drives and other digital devices. 
Comments: 61 Pages.
[v1] 2019-10-16 10:48:30
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