Physics

The dependence of the energy (vertical axis) on the angle for polarized light reflected from birefringent optical cavity (horizontal axis). Credit: M. Krol, UW Physics More An international research collaboration from Poland, the UK and Russia has created a two-dimensional system—a thin optical cavity filled with liquid crystal—in which they trapped photons. As the properties
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Credit: CC0 Public Domain More A superconducting rotor has been successfully tested on an active wind turbine for the first time. The EcoSwing consortium designed, developed, and manufactured a full-size superconducting generator for a 3.6 megawatt wind turbine, and field-tested it in Thyborøn, Denmark. They report their results in the IOP Publishing journal Superconductor Science
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Crystal structure of Pyrite OsSe2/OsTe2. Credit: FLEET More A Monash University study revealing new spin textures in pyrite could unlock these materials’ potential in future spintronics devices. The study of pyrite-type materials provides new insights and opportunities for selective spin control in topological spintronics devices. Seeking new spin in topological materials Topological materials have exciting
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An artist’s impression of a light-induced charge density wave (CDW). The wavy mesh represents distortions of the material’s lattice structure caused by the formation of CDWs. Glowing spheres represent photons. In the center, the original CDW is suppressed by a brief pulse of laser light, while a new CDW (at right) appears at right angles
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A new approach for particle analysis uses a laser beam to capture airborne particles and propel them through a hollow-core photonic crystal fiber. The particle diameter and refractive index can be retrieved by monitoring changes in fiber transmission. Credit: Philip Russell, Max Planck Institute for the Science of Light More A new technique for continuously
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Visualisation of how the charge carriers (in purple) accumulate in the disordered perovskite structures. Credit: Ella Maru Studio More Scientists at the University of Cambridge studying perovskite materials for next generation solar cells and flexible LEDs have discovered that they can be more efficient when their chemical compositions are less ordered, vastly simplifying production processes
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A schematic image of magnetic tunnel junction constructed of ferroelectric material sandwiched by magnetic metal layers. Interface of each electric polarization direction are shown enlarged in right-hand side. The diagram of electric resistance caused by electric polarization and magnetic directions are shown in bottom-left side. Credit: Kanazawa University More Researchers at Kanazawa University controlled the
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The schematic of a smart metasurface. (a) Illustration of the proposed smart metasurface with the self-adaptively reprogrammable functions without manual instruction. (b) The closed-loop system of the smart metasurface, which includes a digital-coding metasurface, an FPGA, a sensor, and a microcontroller unit (MCU) loaded with the fast feedback algorithm. Credit: Light: Science & Applications, doi:
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The texture of food is an important part of enjoying foods. In order to completely understand these properties, better methods for testing are required to capture the motion inside liquid materials, especially in the case of foods that are complex liquids, like gelled desserts. In a study in Physics of Fluids, researchers introduce an updated
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Credit: CC0 Public Domain More Quantum-based communication and computation technologies promise unprecedented applications, such as unconditionally secure communications, ultra-precise sensors, and quantum computers capable of solving specific problems with a level of efficiency impossible to reach by classical computers. In recent times, quantum computers are also envisioned as nodes in a network of quantum devices,
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Graphic shows the basic design of an X-ray free electron laser or XFEL, in which brilliant X-ray bursts strike crystallized samples, causing diffraction patterns that can be reassembled into detailed images.X-rays damage biomolecules, a problem that has plagued structure determination efforts for decades. But the X-ray bursts produced by an XFEL are so short–lasting mere
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The simple Feynman diagram on the left is decomposed into two time-ordered diagrams. In one of the time orderings, the final particles emerge before the initial particles have been annihilated. Credit: Donoghue & Menezes. More In current quantum field theory, causality is typically defined by the vanishing of field commutators for spacelike separations. Two researchers
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Atoms in a spatially-separated quantum superposition are suspended against Earth’s gravity, using the standing wave formed by an optical cavity. Credit: Sarah Davis More A team of researchers at the University of California, Berkeley, has found a new way to measure gravity—by noting differences in atoms in a supposition state, suspended in the air by
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Discrete burning. Credit: European Space Agency More Later this month a Texus rocket will launch from Esrange, Sweden, that will travel about 260 km upwards and fall back to Earth offering researchers six minutes of zero gravity. Their experiment? Burning metal powder to understand a new type of fire. So-called discrete burning occurs when a
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Ernst Abbe’s diffraction equation on display in Jena, Germany. Credit: Daniel Mietchen, Wikimedia, commons.wikimedia.org/wiki/File:Ernst-Abbe-Denkmal_Jena_F%C3%BCrstengraben_-_20140802_125709.jpg More Although we’re told a picture speaks a thousand words, that cliché seriously underestimates the value of a good image. Our understanding of how the world works is simplified by our ability to turn data into images. Imaging is at the
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