Authors: George Rajna
How can you make a high-frequency MRI machine more precise? By taking an electrical engineering approach to creating a better, uniform magnetic field.  An enigmatic X-ray source revealed as part of a data-mining project for high-school students shows unexplored avenues hidden in the vast archive of ESA's XMM-Newton X-ray Observatory.  There's nothing quite like an ice cream on a hot day, and eating it before it melts too much is part of the fun.  Studying the fleeting actions of electrons in organic materials will now be much easier, thanks to a new method for generating fast X-rays.  In a laboratory at the University of Rochester, researchers are using lasers to change the surface of metals in incredible ways, such as making them super water-repellent without the use of special coatings, paints, or solvents.  The interaction of high-power laser light sources with matter has given rise to numerous applications including; fast ion acceleration; intense X-ray, gamma-ray, positron and neutron generation; and fast-ignition-based laser fusion.  Conventional electron accelerators have become an indispensable tool in modern research.  An outstanding conundrum on what happens to the laser energy after beams are fired into plasma has been solved in newly-published research at the University of Strathclyde.  Researchers at Lund University and Louisiana State University have developed a tool that makes it possible to control extreme UV light-light with much shorter wavelengths than visible light.  Tiny micro-and nanoscale structures within a material's surface are invisible to the naked eye, but play a big role in determining a material's physical, chemical, and biomedical properties.  A team of researchers led by Leo Kouwenhoven at TU Delft has demonstrated an on-chip microwave laser based on a fundamental property of superconductivity, the ac Josephson effect. They embedded a small section of an interrupted superconductor, a Josephson junction, in a carefully engineered on-chip cavity. Such a device opens the door to many applications in which microwave radiation with minimal dissipation is key, for example in controlling qubits in a scalable quantum computer. 
Comments: 32 Pages.
[v1] 2018-10-31 09:58:09
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