Physics

Physics News -- ScienceDaily Physics News and Research. Why is the universe more partial to matter than antimatter? How could fuel cells be more efficient? Read current science articles on physics.

  • Gamma rays will reach beyond the limits of light
    on October 20, 2017 at 2:16 pm

    Researchers have discovered a new way to produce high energy photon beams. The new method makes it possible to produce these gamma rays in a highly efficient way, compared with today's technique. The obtained energy is a billion times higher than the energy of photons in visible light. These high intensity gamma rays significantly exceed all known limits, and pave the way towards new fundamental studies. […]

  • The blob that ate the tokamak: Physicists gain understanding of bubbles at edge of plasmas
    on October 19, 2017 at 7:05 pm

    Scientists have completed new simulations that could provide insight into how blobs at the plasma edge behave. The simulations performed kinetic simulations of two different regions of the plasma edge simultaneously. […]

  • Using optical chaos to control the momentum of light
    on October 19, 2017 at 7:05 pm

    Controlling and moving light poses serious challenges. One major hurdle is that light travels at different speeds and in different phases in different components of an integrated circuit. For light to couple between optical components, it needs to be moving at the same momentum. Now, a team of researchers has demonstrated a new way to control the momentum of broadband light in a widely-used optical component known as a whispering gallery microcavity (WGM). […]

  • Scientists solve a magnesium mystery in rechargeable battery performance
    on October 19, 2017 at 3:10 pm

    Scientists have discovered a surprising set of chemical reactions involving magnesium that degrade battery performance even before the battery can be charged up. The findings could steer the design of next-gen batteries. […]

  • New ways to achieve selectivity for biomarkers in bioelectronics
    on October 19, 2017 at 2:09 pm

    Materials science and engineering researchers have experimentally verified the electrochemical processes that control charge transfer rate from an organic polymer to a biomarker molecule. Their findings may enhance selectivity for biomarkers in bioelectronic devices. […]

  • Physics boosts artificial intelligence methods
    on October 18, 2017 at 7:47 pm

    Despite the central role of physics in quantum computing, until now, no problem of interest for physics researchers has been resolved by quantum computing techniques. Now, researchers report the first application of quantum computing to a physics problem. […]

  • Research demonstrates method to alter coherence of light
    on October 18, 2017 at 7:19 pm

    In a finding that could have broad applications in optical devices, researchers have shown that they can transform incoherent light to almost fully coherent and vice versa. […]

  • At tremendous precision, the proton and antiproton still seem identical
    on October 18, 2017 at 5:29 pm

    Using a novel two-particle measurement method, a group of researchers measured the magnetic moment of the antiproton at a precision 350 times higher than any previous measurement. The result shows that the magnetic moments of the proton and antiproton are tremendously close, meaning that so-called CPT asymmetry -- a key factor in the lack of antimatter -- must be very small if it exists at all. […]

  • Riddle of matter remains unsolved: Proton and antiproton share fundamental properties
    on October 18, 2017 at 5:28 pm

    Physicists have been able to measure the magnetic force of antiprotons with almost unbelievable precision. […]

  • Nanoelectronics breakthrough could lead to more efficient quantum devices
    on October 18, 2017 at 3:35 pm

    Researchers have made a breakthrough that could help your electronic devices get even smarter. Their findings examine electron behavior within nanoelectronics, as outlined in a new article. […]

  • Force field analysis provides clues to protein-ion interaction
    on October 18, 2017 at 1:22 pm

    The importance of proteins and metal ion interactions is well understood, but the mechanistic interactions between the two are still far from a complete picture. Researchers are working to quantitatively describe protein-ion interactions using what is called an atomic multipole optimized energetics for biomolecular applications force field. […]

  • Water droplet physics: The drop that's good to the very end
    on October 18, 2017 at 1:22 pm

    Two researchers, using laser-flash photography of microscopic droplet-particle collisions, have discovered that water droplets still have liquid tricks to reveal. Previous research has primarily examined droplet collisions with flat surfaces, such as a wall, but this research team examined the less studied case of a droplet having a head-on collision with a solid, spherical particle. […]

  • Bridging the terahertz gap
    on October 18, 2017 at 1:02 pm

    Researchers are exploring the possibility of using an infrared frequency comb to generate elusive terahertz frequencies. These frequencies -- which lie in the electromagnetic spectrum between radio waves and infrared light -- have long promised to transform communications and sensing but are very challenging to source. By harnessing a recently discovered laser state, researchers have discovered an infrared frequency comb in a quantum cascade laser that offers a new way to generate terahertz frequencies. […]

  • Loops of liquid metal can improve future fusion power plants, scientists say
    on October 17, 2017 at 3:43 pm

    Researchers have proposed an innovative design to improve the ability of future fusion power plants to generate safe, clean and abundant energy in a steady state, or constant, manner. The design uses loops of liquid lithium to clean and recycle the tritium, the radioactive hydrogen isotope that fuels fusion reactions, and to protect the divertor plates from intense exhaust heat from the tokamak that contains the reactions. […]

  • New method for quantum-mechanical swapping of positions
    on October 17, 2017 at 3:01 pm

    An international team of researchers has proposed a new way to make atoms or ions indistinguishable by swapping their positions. These particles are then expected to exhibit exotic properties. […]

  • Bringing the atomic world into full color
    on October 17, 2017 at 3:01 pm

    Scientists have developed a new way of visualizing the atomic world by turning data scanned by an atomic force microscope into clear color images. The newly developed method, which enables observation of materials and substances like alloys, semiconductors, and chemical compounds in a relatively short time, holds promise of becoming widely used in the research and development of surfaces and devices. […]

  • Electroplating: The birth of a single nucleus caught in camera
    on October 17, 2017 at 3:00 pm

    Electroplating, or electrodeposition, is one of the most important processes in chemistry, in which a metal cation in solution can be reduced to its elemental form by applying an electrical potential to an electrode. […]

  • Controlling chemical reactions with electrons: Quantum physics paves the way for new chemical...
    on October 17, 2017 at 1:22 pm

    New research reveals that electrons can control chemical reactions in experiments, potentially paving the way to purer, cheaper chemical products. […]

  • Shaping animal, vegetable and mineral
    on October 16, 2017 at 11:03 pm

    A new technique to grow any target shape from any starting shape has now been developed by researchers, outlines a new report. […]

  • Filling the early universe with knots can explain why the world is three-dimensional
    on October 16, 2017 at 11:03 pm

    Filling the universe with knots shortly after it popped into existence 13.8 billion years ago provides a neat explanation for why we inhabit a three-dimensional world. That is the basic idea advanced by an out-of-the-box theory developed by an international team of physicists. […]

  • Chemical treatment improves quantum dot lasers
    on October 16, 2017 at 5:26 pm

    One of the secrets to making tiny laser devices such as opthalmic surgery scalpels work even more efficiently is the use of tiny semiconductor particles, called quantum dots. In new research the ~nanometer-sized dots are being doctored, or 'doped,' with additional electrons, a treatment that nudges the dots ever closer to producing the desired laser light with less stimulation and energy loss. […]

  • Nanoantenna arrays power a new generation of fluorescence-based sensors
    on October 16, 2017 at 4:21 pm

    Researchers have designed and tested a series of plasmonic nanoantenna arrays that could lead to the development of a new generation of ultrasensitive and low-cost fluorescence sensors that could be used to monitor water quality. […]

  • Quantum simulator: First functioning component
    on October 16, 2017 at 1:24 pm

    Hurricanes, traffic jams, demographic development – to predict the effect of such events, computer simulations are required. Many processes in nature, however, are so complicated that conventional computers fail. Quantum simulators may solve this problem. One of the basic phenomena in nature is the interaction between light and matter in photosynthesis. Physicists have now made a big step towards quantum mechanics understanding of plant metabolism. […]

  • Detailed look at 2-D structure of turbulence in tokamaks
    on October 14, 2017 at 3:17 pm

    A key hurdle for fusion researchers is understanding turbulence, the ripples and eddies that can cause the superhot plasma that fuels fusion reactions to leak heat and particles and keep fusion from taking place. Comprehending and reducing turbulence will facilitate the development of fusion as a safe, clean and abundant source of energy for generating electricity from power plants around the world. […]

  • Spin current detection in quantum materials unlocks potential for alternative electronics
    on October 13, 2017 at 4:31 pm

    A new method that precisely measures the mysterious behavior and magnetic properties of electrons flowing across the surface of quantum materials could open a path to next-generation electronics. A team of scientists has developed an innovative microscopy technique to detect the spin of electrons in topological insulators, a new kind of quantum material that could be used in applications such as spintronics and quantum computing. […]

  • Cold molecules on collision course
    on October 13, 2017 at 1:15 pm

    Using a new cooling technique scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules. […]

  • Single photon reveals quantum entanglement of 16 million atoms
    on October 13, 2017 at 1:10 pm

    Quantum theory predicts that a vast number of atoms can be entangled and intertwined by a very strong quantum relationship even in a macroscopic structure. Until now, experimental evidence has been mostly lacking, despite recent advances have shown the entanglement of 2,900 atoms. Scientists recently reengineered their data processing, demonstrating that 16 million atoms were entangled in a one-centimeter crystal. […]

  • Converting carbon dioxide to carbon monoxide using water, electricity
    on October 13, 2017 at 12:02 am

    Researchers have determined how electrocatalysts can convert carbon dioxide to carbon monoxide using water and electricity. The discovery can lead to the development of efficient electrocatalysts for large scale production of synthesis gas -- a mixture of carbon monoxide and hydrogen. […]

  • International team reconstructs nanoscale virus features from correlations of scattered X-rays
    on October 12, 2017 at 7:18 pm

    Key algorithms have been developed which helped scientists achieve a goal first proposed more than 40 years ago -- using angular correlations of X-ray snapshots from non-crystalline molecules to determine the 3-D structure of important biological objects. […]

  • Spotting the spin of the Majorana fermion under the microscope
    on October 12, 2017 at 6:33 pm

    Using a new twist on a technique for imaging atomic structures, researchers have detected a unique quantum property of the Majorana fermion, an elusive particle with the potential for use in quantum information systems. […]