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Physics News

  • Scientists introduce magnetic data storage of the future

    Single-molecule magnets (SMMs) have been attracting a lot of attention recently. This is because of the increased demand for faster, longer-lasting and lower-energy IT systems, and the need for higher data storage capacity.
    Fri, 20 Apr 2018 10:40:01 EDT
  • Muons spin tales of undiscovered particles

    Scientists at U.S. Department of Energy (DOE) national laboratories are collaborating to test a magnetic property of the muon. Their experiment could point to the existence of physics beyond our current understanding, including undiscovered particles.
    Fri, 20 Apr 2018 10:14:34 EDT
  • Integrating optical components into existing chip designs

    Two and a half years ago, a team of researchers led by groups at MIT, the University of California at Berkeley, and Boston University announced a milestone: the fabrication of a working microprocessor, built using only existing manufacturing processes, that integrated electronic and optical components on the same chip.
    Thu, 19 Apr 2018 16:04:06 EDT
  • Diamond can turn flexible when made into ultrafine needles, researchers find

    Diamond is well-known as the strongest of all natural materials, and with that strength comes another tightly linked property: brittleness. But now, an international team of researchers from MIT, Hong Kong, Singapore, and Korea has found that when grown in extremely tiny, needle-like shapes, diamond can bend and stretch, much like rubber, and snap back to its original shape.
    Thu, 19 Apr 2018 14:00:07 EDT
  • New research could literally squeeze more power out of solar cells

    Physicists at the University of Warwick have today, Thursday 19th April 2018, published new research in the fournal Science today 19th April 2018 (via the Journal's First Release pages) that could literally squeeze more power out of solar cells by physically deforming each of the crystals in the semiconductors used by photovoltaic cells.
    Thu, 19 Apr 2018 14:00:06 EDT
  • New microscope captures detailed 3-D movies of cells deep within living systems

    Our window into the cellular world just got a whole lot clearer.
    Thu, 19 Apr 2018 14:00:01 EDT
  • For nuclear weapons reduction, a way to verify without revealing

    In past negotiations aimed at reducing the arsenals of the world's nuclear superpowers, chiefly the U.S. and Russia, a major sticking point has been the verification process: How do you prove that real bombs and nuclear devices—not just replicas—have been destroyed, without revealing closely held secrets about the design of those weapons?
    Thu, 19 Apr 2018 12:58:26 EDT
  • Atoms may hum a tune from grand cosmic symphony

    Researchers playing with a cloud of ultracold atoms uncovered behavior that bears a striking resemblance to the universe in microcosm. Their work, which forges new connections between atomic physics and the sudden expansion of the early universe, was published April 19 in Physical Review X and featured in Physics.
    Thu, 19 Apr 2018 10:54:17 EDT
  • Researchers find new way of exploring the afterglow from the Big Bang

    Researchers have developed a new way to improve our knowledge of the Big Bang by measuring radiation from its afterglow, called the cosmic microwave background radiation. The new results predict the maximum bandwidth of the universe, which is the maximum speed at which any change can occur in the universe.
    Thu, 19 Apr 2018 10:43:38 EDT
  • Diamond-like carbon is formed differently to what was believed – machine learning enables development of new model

    Researchers at Aalto University and Cambridge University have made a significant breakthrough in computational science by combining atomic-level modeling and machine learning. For the first time, the method has been used to realistically model how an amorphous material is formed at the atomic level: that is, a material that does not have a regular crystalline structure. The approach is expected to have impact on the research of many other materials.
    Thu, 19 Apr 2018 10:09:10 EDT
  • Researchers use diamond impurities to see on the microscopic scale

    It's not often that you see 50-year-old equipment in a modern physics laboratory, let alone find it at the center of cutting-edge research. But then, most such labs aren't run by Ronald Walsworth.
    Thu, 19 Apr 2018 09:45:39 EDT
  • Electromagnetic wizardry: Wireless power transfer enhanced by backward signal

    An international research team including scientists from the Moscow Institute of Physics and Technology and ITMO University has proposed a way to increase the efficiency of wireless power transfer over long distances and tested it with numerical simulations and experiments. To achieve this, they beamed power between two antennas, one of which was excited with a back-propagating signal of specific amplitude and phase. The study is detailed in a paper published in Physical Review Letters and briefly reported in the American Physical Society journal Physics.
    Thu, 19 Apr 2018 07:26:44 EDT
  • Ultrafast electron oscillation and dephasing monitored by attosecond light source

    Collaborative research team of Prof. Jun Takeda and Associate Prof. Ikufumi Katayama in the laboratory of Yokohama National University (YNU) and Nippon Telegraph and Telephone (NTT) have reported petahertz electron oscillation. The periodic electron oscillations of 667-383 attoseconds (10-18 of a second) is the fastest that has ever been measured in direct time-dependent spectroscopy in solid-state material.
    Thu, 19 Apr 2018 07:26:20 EDT
  • Writing and deleting magnets with lasers

    Scientists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) together with colleagues from the Helmholtz-Zentrum Berlin (HZB) and the University of Virginia have found a way to write and delete magnets in an alloy using a laser beam, a surprising effect. The reversibility of the process opens up new possibilities in the fields of material processing, optical technology, and data storage.
    Thu, 19 Apr 2018 07:23:13 EDT
  • Charge density wave inhomogeneity and pseudogap in 1T-TiSe2

    1T-TiSe2 has been widely studied in the past few decades as one of the typical charge density wave (CDW) materials. Recently, superconductivity was realized in this system through Cu intercalation, pressure or electric gating, forming a dome-shaped superconductivity phase diagram. Owing to this resemblance to high -Tc cuprates, much attention has been paid to 1T-TiSe2 to understand the superconducting mechanism and its interplay with CDW. However, it is still under debate whether CDW competes with superconductivity or not. Via tuning the dopant level, 1T-TiSe2 system can undergo the transition from CDW to superconductivity, and thus provides an ideal platform to study the relationship between these two states.
    Thu, 19 Apr 2018 07:22:54 EDT
  • En route to the optical nuclear clock

    The nucleus of thorium-229 possesses a property that is unique among all known nuclides: It should be possible to excite it with ultraviolet light. To date, little has been known about the low-energy state of the Th-229 nucleus that is responsible for this property. Together with their colleagues from Munich and Mainz, researchers at the Physikalisch-Technische Bundesanstalt (PTB) have now performed the first-ever measurements - using optical methods - of some important properties of this nuclear state such as the shape of its charge distribution. In this way, a laser excitation of the atomic nucleus can be monitored, thus allowing an optical nuclear clock to be realized that "ticks" more precisely than present-day atomic clocks. The scientists have reported their results in the current issue of Nature.
    Wed, 18 Apr 2018 13:00:03 EDT
  • Nuclear techniques unlock the structure of a rare type of superconducting intermetallic alloy

    Nuclear techniques have played an important role in determining the crystal structure of a rare type of intermetallic alloy that exhibits superconductivity.
    Wed, 18 Apr 2018 07:07:05 EDT
  • Chip developed by Brazil researchers will be linchpin of LHC upgrade

    A Brazilian chip will be used to upgrade the detection system used in A Large Ion Collider Experiment ( ALICE), one of the four major experiments at the Large Hadron Collider (LHC), the world's most powerful particle accelerator, located on the Franco-Swiss border. The chip is called SAMPA and was designed at the University of São Paulo's Engineering School (Poli-USP) in Brazil.
    Wed, 18 Apr 2018 07:05:37 EDT
  • Novel thermal phases of topological quantum matter in the lab

    For the first time, a group of researchers from Universidad Complutense de Madrid, IBM, ETH Zurich, MIT and Harvard University have observed topological phases of matter of quantum states under the action of temperature or certain types of experimental imperfections. The experiment was conducted using quantum simulator at IBM.
    Wed, 18 Apr 2018 06:23:19 EDT
  • Scientists make counterintuitive observations in hybrid quantum systems

    A team of researchers from the National Institute of Informatics (NII) in Tokyo and NTT Basic Research Laboratories (BRL, Nippon Telegraph and Telephone Corporation) in Japan have published an explanation of how quantum systems may be able to heat up by cooling down. Their paper appeared recently in Physical Review Letters.
    Wed, 18 Apr 2018 05:28:27 EDT