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Physics News

  • Engineers demonstrate metamaterials that can solve equations

    The field of metamaterials involves designing complicated, composite structures, some of which can manipulate electromagnetic waves in ways that are impossible in naturally occurring materials.
    Thu, 21 Mar 2019 14:00:10 EDT
  • Physicists reveal why matter dominates universe

    Physicists in the College of Arts and Sciences at Syracuse University have confirmed that matter and antimatter decay differently for elementary particles containing charmed quarks.
    Thu, 21 Mar 2019 11:48:10 EDT
  • CERN: Study sheds light on one of physics' biggest mysteries – why there's more matter than antimatter

    Why do we exist? This is arguably the most profound question there is and one that may seem completely outside the scope of particle physics. But our new experiment at CERN's Large Hadron Collider has taken us a step closer to figuring it out.
    Thu, 21 Mar 2019 11:36:59 EDT
  • In a new quantum simulator, light behaves like a magnet

    Physicists at EPFL propose a new "quantum simulator": a laser-based device that can be used to study a wide range of quantum systems. Studying it, the researchers have found that photons can behave like magnetic dipoles at temperatures close to absolute zero, following the laws of quantum mechanics. The simple simulator can be used to better understand the properties of complex materials under such extreme conditions.
    Thu, 21 Mar 2019 11:27:54 EDT
  • New microscope captures large groups of neurons in living animals

    Researchers have developed a microscope specifically for imaging large groups of interacting cells in their natural environments. The instrument provides scientists with a new tool for imaging neurons in living animals and could provide an unprecedented view into how large networks of neurons interact during various behaviors.
    Thu, 21 Mar 2019 10:00:02 EDT
  • Optical force-induced self-guiding light in human red blood cell suspensions

    New photonic tools for medical imaging can be used to understand the nonlinear behavior of laser light in human blood for theranostic applications. When light enters biological fluids it is quickly scattered, however, some cell suspensions can induce nonlinear responses in laser beams to self-focus and enhance the penetration of light for biomedical applications as a quantifiable marker of disease. In a recent study now published in Light: Science and Applications, Rekha Gautam and her colleagues at the San Francisco State University and an international team of co-workers showed that a laser beam shining through red blood cell suspensions could become "self-trapped." The process reduced light scattering to retain the power of the beam of laser light within the biological samples.
    Thu, 21 Mar 2019 09:30:03 EDT
  • The best topological conductor yet: Spiraling crystal is the key to exotic discovery

    The realization of so-called topological materials—which exhibit exotic, defect-resistant properties and are expected to have applications in electronics, optics, quantum computing, and other fields—has opened up a new realm in materials discovery.
    Wed, 20 Mar 2019 14:00:11 EDT
  • Project aims to tame noise from supersonic military jets with 'swirl' technology

    It's cliché to describe something very noisy as "louder than a jet engine." But supersonic jet engines, like those powering fighters flown by the U.S. military, are so much louder than regular jet engines that scientists have a special term for their sound—"broadband shock-associated noise."
    Wed, 20 Mar 2019 11:52:40 EDT
  • The subterranean ballet of ALICE

    The experiment caverns of the Large Hadron Collider (LHC) are staging a dazzling performance during Long Shutdown 2 (LS2). The resplendent sub-detectors, released from their underground homes, are performing a fascinating ballet. At the end of February, ALICE removed the two trackers, the inner tracker system and the time projection chamber, from the detector. At the very start of the long shutdown, on 3 December 2018, the teams began disconnecting the dozens of sub-detectors. And finally, on 25 February, the two trackers were ready to be removed.
    Wed, 20 Mar 2019 10:05:34 EDT
  • Supercomputer sheds light on how droplets merge

    Scientists have revealed the precise molecular mechanisms that cause drops of liquid to combine, in a discovery that could have a range of applications.
    Wed, 20 Mar 2019 09:33:55 EDT
  • Study investigates pressure-induced superconducting transition in electrides

    Researchers at Northeast Normal University, in China, and University of the Basque Country, in Spain, have recently carried out a study investigating the superconducting transition of electrides. The researchers observed that a pressure-induced stable Li6P, identified by first-principles swarm structure calculations, can become a superconductor with a considerably high superconducting transition temperature.
    Wed, 20 Mar 2019 09:30:06 EDT
  • ATLAS experiment observes light scattering off light

    Light-by-light scattering is a very rare phenomenon in which two photons interact, producing another pair of photons. This process was among the earliest predictions of quantum electrodynamics (QED), the quantum theory of electromagnetism, and is forbidden by classical physics theories (such as Maxwell's theory of electrodynamics). 
    Wed, 20 Mar 2019 09:01:58 EDT
  • Speeding the development of fusion power to create unlimited energy on Earth

    Can tokamak fusion facilities, the most widely used devices for harvesting on Earth the fusion reactions that power the sun and stars, be developed more quickly to produce safe, clean, and virtually limitless energy for generating electricity? Physicist Jon Menard of the U.S. Department of Energy's (DOE) Princeton Plasma Physics Laboratory (PPPL) has examined that question in a detailed look at the concept of a compact tokamak equipped with high temperature superconducting (HTS) magnets. Such magnets can produce higher magnetic fields—necessary to produce and sustain fusion reactions—than would otherwise be possible in a compact facility.
    Tue, 19 Mar 2019 12:40:05 EDT
  • Uncovering the superconducting phosphine: P2H4 and P4H6

    High-Tc superconductors have become a hot topic in physics since superconducting mercury was first reported more than a century ago. Dense hydrogen was predicted to metalize and become a superconductor at high pressure and room temperature. However, no widely accepted experimental work has been reported yet. In 2004, Ashcroft predicted hydrogen-dominant hydrides could become a high-Tc superconductor at high pressure, due to chemical precompression. Later, Drozdov et al. observed the superconductive transition of H2S at 203 K and 155 GPa, which broke the highest Tc record. Very recently, LaH6 was reported to show superconducting behavior at ~260K. Motivated by these efforts, extensive investigations on hydrides system have been reported.
    Tue, 19 Mar 2019 11:29:04 EDT
  • Energy-efficient superconducting cable for future technologies

    For connecting wind parks, for DC supply on ships, or for lightweight and compact high-current cabling in future electric airplanes: scientists of Karlsruhe Institute of Technology (KIT) have developed a versatile superconducting cable that can be manufactured easily. In case of moderate cooling, it transports electric energy with hardly any losses.
    Tue, 19 Mar 2019 10:49:24 EDT
  • Computer program developed to find 'leakage' in quantum computers

    A new computer program that spots when information in a quantum computer is escaping to unwanted states will give users of this promising technology the ability to check its reliability without any technical knowledge for the first time.
    Tue, 19 Mar 2019 10:00:08 EDT
  • We did a breakthrough 'speed test' in quantum tunnelling, and here's why that's exciting

    When you deal with things at the quantum scale, where things are very small, the world is quite fuzzy and bizarre in comparison to our everyday experiences.
    Tue, 19 Mar 2019 09:40:01 EDT
  • Levitating objects with light

    Researchers at Caltech have designed a way to levitate and propel objects using only light, by creating specific nanoscale patterning on the objects' surfaces.
    Tue, 19 Mar 2019 08:40:26 EDT
  • Researchers use muon detector to measure electric potential in a thunderstorm

    A team of researchers from several institutions in India and Japan has found that it is possible to use a muon detector to measure electric potential in thunderstorms. The paper is published in the journal Physical Review Letters. The researchers explain that they noticed muon detection levels drop during thunderstorms, and used that information to calculate electric potential in thunderstorms.
    Tue, 19 Mar 2019 08:30:01 EDT
  • How heavy elements come about in the universe

    Heavy elements are produced during stellar explosion or on the surfaces of neutron stars through the capture of hydrogen nuclei (protons). This occurs at extremely high temperatures, but at relatively low energies. An international research team headed by Goethe University has now succeeded in investigating the capture of protons at the storage ring of the GSI Helmholtzzentrum für Schwerionenforschung.
    Tue, 19 Mar 2019 08:20:02 EDT