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.

  • Quick and easy way to shut down instabilities in fusion devices
    on August 18, 2017 at 4:35 pm

    Scientists have discovered a remarkably simple way to suppress a common instability that can halt fusion reactions and damage the walls of reactors built to create a "star in a jar." […]

  • Engineering team images tiny quasicrystals as they form
    on August 17, 2017 at 8:20 pm

    What makes quasicrystals so interesting? Their unusual structure. Now scientists are actively pursuing this relatively new area of study. […]

  • Superconductivity research reveals potential new state of matter
    on August 16, 2017 at 5:47 pm

    A potential new state of matter is being reported with research showing that among superconducting materials in high magnetic fields, the phenomenon of electronic symmetry breaking is common. The ability to find similarities and differences among classes of materials with phenomena such as this helps researchers establish the essential ingredients that cause novel functionalities such as superconductivity. […]

  • Tough, self-healing rubber developed
    on August 16, 2017 at 4:23 pm

    Imagine a tire that could heal after being punctured or a rubber band that never snapped. Researchers have developed a new type of rubber that is as tough as natural rubber but can also self-heal. […]

  • Soft and spherical: Researchers study dynamics of drop impact
    on August 15, 2017 at 3:11 pm

    Within the study of fluid dynamics, the effect of curved, convex or compliant surfaces on the dynamics of impacting drops is still relatively unknown, despite its extreme relevance to modern-day applications, such as 3-D ink-jet printing and the delivery of pesticides on leaves. Researchers have now detailed these effects by investigating the impact of water droplets on spherical soft surfaces. […]

  • Relativistic self-focusing gives mid-IR driven electrons a boost
    on August 15, 2017 at 3:09 pm

    For the first time, scientists have observed the production of relativistic electrons driven by low-energy, ultrashort mid-infrared laser pulses. […]

  • Atomically thin layers bring spintronics closer to applications
    on August 15, 2017 at 1:50 pm

    Scientists have created a graphene-based device, in which electron spins can be injected and detected with unprecedented efficiency. The result is a hundredfold increase of the spin signal, big enough to be used in real life applications, such as new spin transistors and spin-based logic. […]

  • ATLAS sees first direct evidence of light-by-light scattering at high energy
    on August 14, 2017 at 4:59 pm

    Physicists from the ATLAS experiment have found the first direct evidence of high energy light-by-light scattering, a very rare process in which two photons – particles of light – interact and change direction. The result confirms one of the oldest predictions of quantum electrodynamics (QED). […]

  • Single molecules can work as reproducible transistors -- at room temperature
    on August 14, 2017 at 4:09 pm

    Researchers have now reproducibly demonstrated current blockade -- the ability to switch a device from the insulating to the conducting state where charge is added and removed one electron at a time -- using atomically precise molecular clusters at room temperature. The study shows that single molecules can function as reproducible circuit elements such as transistors or diodes that can easily operate at room temperature. […]

  • New class of chemical reaction discovered
    on August 14, 2017 at 4:09 pm

    A new study has identified the significance of a new class of chemical reactions -- previously ignored -- involving three molecules that each participate in the breaking and forming of chemical bonds. […]

  • Exotic quantum states made from light
    on August 14, 2017 at 4:09 pm

    Physicists have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. […]

  • X-ray imaging with a significantly enhanced resolution
    on August 14, 2017 at 1:27 pm

    Physicists have come up with a method that could significantly improve the quality of X-ray images in comparison to conventional methods. Incoherent diffractive imaging (IDI) could help to image individual atoms in nanocrystals or molecules faster and with a much higher resolution. […]

  • New SQUID-based detector opens up new fields of study with new level of sensitivity
    on August 11, 2017 at 8:25 pm

    Investigators have developed a new sensor array-based instrument that offers ultra-low noise detection of small amounts of energy for a number of applications. The new device allows for the collection of data from many more detectors than was previously possible. […]

  • Massive particles test standard quantum theory
    on August 11, 2017 at 6:11 pm

    In quantum mechanics particles can behave as waves and take many paths through an experiment. It requires only combinations of pairs of paths, rather than three or more, to determine the probability for a particle to arrive somewhere. Researchers have addressed this question for the first time explicitly using the wave interference of large molecules behind various combinations of single, double, and triple slits. […]

  • Successful filming of fastest aurora flickering
    on August 9, 2017 at 6:02 pm

    Researchers conducted a 3 year continuous high-speed imaging observation at Poker Flat Research Range, Alaska, USA, and identified the physics behind the flickering of aurora. At the same time, they discovered faster flickerings at speeds of 1/60-1/50 and 1/80 of a second. […]

  • Updated computer code improves prediction of particle motion in plasma experiments
    on August 9, 2017 at 6:01 pm

    A computer code used by physicists around the world to analyze and predict tokamak experiments can now approximate the behavior of highly energetic atomic nuclei, or ions, in fusion plasmas more accurately than ever. […]

  • Tiny terahertz laser could be used for imaging, chemical detection
    on August 8, 2017 at 6:52 pm

    For more than 20 years, researchers have been working on sources of terahertz radiation that can be etched onto microchips. In a new article, they now describe a novel design that boosts the power output of chip-mounted terahertz lasers by 80 percent. […]

  • Scientists probe the conditions of stellar interiors to measure nuclear reactions
    on August 7, 2017 at 8:44 pm

    Most of the nuclear reactions that drive the nucleosynthesis of the elements in our universe occur in very extreme stellar plasma conditions. This intense environment found in the deep interiors of stars has made it nearly impossible for scientists to perform nuclear measurements in these conditions -- until now. […]

  • New technique to suppress sound waves from disorder to improve optical fiber communication
    on August 7, 2017 at 8:44 pm

    New research has revealed a new technique by which scattering of sound waves from disorder in a material can be suppressed on demand. All of this, can be simply achieved by illuminating with the appropriate color of laser light. The result could have a wide-ranging impact on sensors and communication systems. […]

  • Record for fastest light pulse set
    on August 7, 2017 at 4:19 pm

    A research team has demonstrated a 53-attosecond X-ray flash, opening the door to shoot slow-motion video of electrons and atoms in living cells. […]

  • Optical coherence tomography with XUV radiation at laboratory scale
    on August 7, 2017 at 2:40 pm

    For the first time, physicists used extreme ultraviolet radiation (XUV) for this process, which was generated in their own laboratory, and they were thus able to perform the first XUV coherence tomography at laboratory scale. This radiation has a wavelength of between 20 and 40 nanometers - from which it is therefore just a small step to the X-ray range. […]

  • Nanocrystalline LEDs: Red, green, yellow, blue …
    on August 7, 2017 at 12:23 pm

    The color of the light emitted by an LED can be tuned by altering the size of their semiconductor crystals. Researchers have now found a clever and economical way of doing just that, which lends itself to industrial-scale production. […]

  • Software lets designers exploit the extremely high resolution of 3-D printers
    on August 4, 2017 at 4:39 pm

    Today's 3-D printers have a resolution of 600 dots per inch, which means that they could pack a billion tiny cubes of different materials into a volume that measures just 1.67 cubic inches. Such precise control of printed objects' microstructure gives designers commensurate control of the objects' physical properties. But evaluating the physical effects of every possible combination of even just two materials, for an object consisting of tens of billions of cubes, would be prohibitively time consuming. A new software lets designers exploit this issue of extremely high resolution. […]

  • Possible explanation for the dominance of matter over antimatter in the Universe
    on August 4, 2017 at 12:31 pm

    Neutrinos and antineutrinos, sometimes called ghost particles because difficult to detect, can transform from one type to another. The international T2K Collaboration announces a first indication that the dominance of matter over antimatter may originate from the fact that neutrinos and antineutrinos behave differently during those oscillations. This is an important milestone towards the understanding of our Universe. […]

  • Quantum magnets doped with holes
    on August 4, 2017 at 12:29 pm

    In general, solid state physicists are not able to separate the two processes, so they cannot answer the question, whether the magnetic order is indeed reduced, or whether it is just hidden. […]

  • Low-power cold-atom source developed for atomic clocks, physics experiments
    on August 3, 2017 at 7:22 pm

    A reversible alkali atom source has been developed that runs at low power and low voltage, which is beneficial in applications such as smaller, more efficient, and ultimately portable atomic clocks that use cold atoms. […]

  • World's smallest neutrino detector observes elusive interactions of particles
    on August 3, 2017 at 6:11 pm

    In 1974, a Fermilab physicist predicted a new way for ghostly particles called neutrinos to interact with matter. More than four decades later, a team of physicists built the world's smallest neutrino detector to observe the elusive interaction for the first time. […]

  • First observation of the hyperfine splitting in antihydrogen
    on August 3, 2017 at 4:27 pm

    Scientists are one step closer to answering the question of why matter exists and illuminating the mysteries of the Big Bang and the birth of the universe. […]

  • Research and design for carbon quantum dots catalysts
    on August 2, 2017 at 2:30 pm

    A new study that provides a new approach for the rational design of carbon quantum dots (CQD) modified catalysts with potential applications in energy and environmental areas. The study discusses the introduction of CQDs into Bi2WO6 photocatalyst and the demonstration of its good photocatalytic performance in pollutant degradation and hydrogen evolution. […]

  • Clarifiying complex chemical processes with quantum computers
    on August 2, 2017 at 2:30 pm

    Science and the IT industry have high hopes for quantum computing, but descriptions of possible applications tend to be vague. Researchers have now come up with a concrete example that demonstrates what quantum computers will actually be able to achieve in the future. […]