Authors: George Rajna
Researchers at Ruhr-Universität Bochum, the University of Duisburg-Essen and Friedrich-Alexander-Universität Erlangen-Nürnberg have discovered a possible mechanism for this.  The pattern of arrangement of atoms in a crystal, called the crystal lattice, can have a huge effect on the properties of solid materials.  The first step of this experiment involves placing the super-tiny crystals on the tip of the glass fiber.  This research work by the UEx, which has been published in Scientific Reports, explored the electromagnetic properties of specific materials that can make certain objects invisible when they are introduced into its interior.  A research team from ITMO University and the Australian National University has discovered that different metasurfaces exhibit the same behavior provided a symmetry breaking is introduced to their unit cells "meta-atoms." Electron microscopy has allowed scientists to see individual atoms, but even at that resolution not everything is clear.  A half-century ago, the theorist Walter Henneberger wondered if it were possible to use a laser field to free an electron from its atom without removing it from the nucleus.  A new study by researchers at the Okinawa Institute of Science and Technology Graduate University (OIST) may explain this disparity. In the work, the OIST researchers measured electrical current across a two-dimensional plane.  Femtosecond lasers are capable of processing any solid material with high quality and high precision using their ultrafast and ultra-intense characteristics.  To create the flying microlaser, the researchers launched laser light into a water-filled hollow core fiber to optically trap the microparticle. Like the materials used to make traditional lasers, the microparticle incorporates a gain medium.  Lasers that emit ultrashort pulses of light are critical components of technologies, including communications and industrial processing, and have been central to fundamental Nobel Prize-winning research in physics. 
Comments: 80 Pages.
[v1] 2018-12-09 07:09:54
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