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.

  • World's fastest human-made spinning object could help study quantum mechanics
    on July 20, 2018 at 3:28 pm

    Researchers have created the fastest human-made spinning object in the world, which they believe will help them study material science, quantum mechanics and the properties of vacuum. […]

  • Physics treasure hidden in a wallpaper pattern
    on July 19, 2018 at 8:50 pm

    An international team of scientists has discovered a new, exotic form of insulating material with a metallic surface that could enable more efficient electronics or even quantum computing. The researchers developed a new method for analyzing existing chemical compounds that relies on the mathematical properties like symmetry that govern the repeating patterns seen in everyday wallpaper. […]

  • Computer model predicts how fracturing metallic glass releases energy at the atomic level
    on July 19, 2018 at 2:48 pm

    Metallic glasses are an exciting research target, but the difficulties associated with predicting how much energy these materials release when they fracture is slowing down development of metallic glass-based products. Recently, researchers developed a way of simulating to the atomic level how metallic glasses behave as they fracture. This modeling technique could improve computer-aided materials design and help researchers determine the properties of metallic glasses. […]

  • Puzzling results explained: A multiband approach to Coulomb drag and indirect excitons
    on July 19, 2018 at 1:44 pm

    A new theoretical study explains previous mystifying experimental results, in which coupled charged particles moved in exactly the opposite direction to that predicted. This apparently contradictory phenomenon is associated with the bandgap in dual-layer graphene structures, a bandgap which is very much smaller than in conventional semiconductors. […]

  • Reversing cause and effect is no trouble for quantum computers
    on July 19, 2018 at 1:44 pm

    Scientists show that a quantum computer is less in thrall to the arrow of time than a classical computer. […]

  • The relationship between charge density waves and superconductivity? It's complicated
    on July 18, 2018 at 3:33 pm

    For a long time, physicists have tried to understand the relationship between a periodic pattern of conduction electrons called a charge density wave (CDW), and another quantum order, superconductivity, or zero electrical resistance, in the same material. Do they compete? Co-exist? Co-operate? Do they go their separate ways? […]

  • Materials processing tricks enable engineers to create new laser material
    on July 18, 2018 at 12:21 pm

    By doping alumina crystals with neodymium ions, engineers have developed a new laser material that is capable of emitting ultra-short, high-power pulses -- a combination that could potentially yield smaller, more powerful lasers with superior thermal shock resistance, broad tunability and high-duty cycles. […]

  • No more zigzags: Scientists uncover mechanism that stabilizes fusion plasmas
    on July 17, 2018 at 10:23 pm

    Article describes simulation of mechanism that eliminates sawtooth instabilities in fusion plasmas. […]

  • Researchers make and test atom-thick boron's unique domains
    on July 16, 2018 at 8:45 pm

    Defects are often observed when making borophene, the single-atom form of boron, but unlike in other two-dimensional materials, these mismatched lattices can assemble into ordered structures that preserve the material's metallic nature and electronic properties. […]

  • Study of high-energy neutrinos again proves Einstein right
    on July 16, 2018 at 7:16 pm

    A new study demonstrates that Einstein is right again. The most thorough test yet finds no Lorentz violation in high-energy neutrinos. […]

  • What's causing the voltage fade in Lithium-rich NMC cathode materials?
    on July 16, 2018 at 7:15 pm

    Researchers explain what's causing the performance-reducing 'voltage fade' that currently plagues a promising class of cathode materials called Lithium-rich NMC (nickel magnesium cobalt) layered oxides. […]

  • Microscopic trampoline may help create networks of quantum computers
    on July 16, 2018 at 6:16 pm

    Researchers have developed a microscopic ''trampoline'' that can absorb microwave energy and bounce it into laser light -- a crucial step for sending quantum signals over long distances. […]

  • Faster photons could enable total data security
    on July 16, 2018 at 3:46 pm

    Researchers have solved a key puzzle in quantum physics that could help to make data transfer totally secure. […]

  • A step closer to quantum computers: Researchers show how to directly observe quantum spin effects
    on July 16, 2018 at 2:35 pm

    Scientists have found a practical way to observe and examine the quantum effects of electrons in topological insulators and heavy metals. This could later pave the way for the development of advanced quantum computing components and devices. […]

  • Tuning into quantum: Scientists unlock signal frequency control of precision atom qubits
    on July 14, 2018 at 2:02 am

    Scientists have achieved a new milestone in their approach to creating a quantum computer chip in silicon, demonstrating the ability to tune the control frequency of a qubit by engineering its atomic configuration. […]

  • Theorists publish highest-precision prediction of muon magnetic anomaly
    on July 13, 2018 at 3:19 pm

    Latest calculation based on how subatomic muons interact with all known particles comes out just in time for comparison with precision measurements at new 'Muon g-2' experiment. […]

  • How might dark matter interact with ordinary matter?
    on July 13, 2018 at 1:35 pm

    Scientists have imposed conditions on how dark matter may interact with ordinary matter. In the search for direct detection of dark matter, the experimental focus has been on WIMPs, or weakly interacting massive particles, the hypothetical particles thought to make up dark matter. But the research team invokes a different theory to challenge the WIMP paradigm: the self-interacting dark matter model, or SIDM. […]

  • Graphene could be key to controlling water evaporation
    on July 13, 2018 at 12:44 am

    Graphene coatings may offer the ability to control the water evaporation process from various surfaces, according to new research. The study looked at the interactions of water molecules with various graphene-covered surfaces. […]

  • New molecular structures in boron-based nanoclusters
    on July 12, 2018 at 6:34 pm

    Researchers have shown that clusters of boron and lanthanide atoms form interesting 'inverse sandwich' structures that could be useful as molecular magnets. […]

  • VERITAS supplies critical piece to neutrino discovery puzzle
    on July 12, 2018 at 3:45 pm

    The VERITAS array has confirmed the detection of gamma rays from the vicinity of a supermassive black hole. While these detections are relatively common for VERITAS, this black hole is potentially the first known astrophysical source of high-energy cosmic neutrinos, a type of ghostly subatomic particle. […]

  • Quantum dot white LEDs achieve record efficiency
    on July 12, 2018 at 3:45 pm

    Researchers have demonstrated nanomaterial-based white-light-emitting diodes (LEDs) that exhibit a record luminous efficiency of 105 lumens per watt. […]

  • Chemists achieve unprecedented molecular triple jump with multi-ringed metal complexes
    on July 12, 2018 at 3:44 pm

    For decades, chemists have been mixing metals and carbon to create novel molecules, from the world's longest molecular wires to microscopic gyroscopes controllable by cage size, molecular access and even progress toward unidirectional rotation via external electrical field manipulation. […]

  • Heaviest known calcium atom discovered
    on July 12, 2018 at 2:05 pm

    Researchers have discovered eight new rare isotopes of the elements phosphorus, sulfur, chlorine, argon, potassium, scandium and, most importantly, calcium. These are the heaviest isotopes of these elements ever found. […]

  • Can ultrashort electron flashes help harvest nuclear energy?
    on July 12, 2018 at 2:05 pm

    Physicists have now demonstrated experimentally the ability to coherently manipulate the wave function of a free electron down to the attosecond timescale (10-18 of a second). The team also developed a theory for creating zeptosecond (10-21 of a second) electron pulses, which could also be used to increase the energy yield of nuclear reactions. […]

  • Controlling the manufacture of stable aerogels
    on July 12, 2018 at 2:05 pm

    Researchers have developed a new approach to control the fabrication of soft, porous materials, overcoming a primary challenge in materials science. […]

  • Brain function partly replicated by nanomaterials
    on July 12, 2018 at 2:05 pm

    Researchers have created extremely dense, random SWNT/POM network molecular neuromorphic devices, generating spontaneous spikes similar to nerve impulses of neurons. They conducted simulation calculations of the random molecular network model complexed with POM molecules, which are able to store electric charges, replicating spikes generated from the random molecular network. They also demonstrated that this molecular model would very likely become a component of reservoir computing devices. Reservoir computing is anticipated as next-generation artificial intelligence. […]

  • Magnetic vortices: Two independent magnetic skyrmion phases discovered in a single material
    on July 12, 2018 at 2:04 pm

    For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications. […]

  • High-fidelity quantum secret sharing prevents eavesdropping
    on July 11, 2018 at 2:57 pm

    Eavesdropping is of concern for secrets shared using quantum scale messengers. A quantum secret is akin to an unknown quantum state of two entangled particles carrying the secret. In a new study scientists calculate the degree of fidelity of the quantum secret once transmitted and explore how to avoid eavesdropping. […]

  • Centenary of cosmological constant lambda
    on July 11, 2018 at 2:57 pm

    Physicists are now celebrating the 100th anniversary of the cosmological constant. On this occasion, two recent articles highlight its role in modern physics and cosmology. Before becoming widely accepted, the cosmological constant had to undergo many discussions about its necessity, its value and its physical essence. Today, there are still unresolved problems in understanding the deep physical nature of the phenomena associated with the cosmological constant. […]

  • Underlying mechanism discovered for magnetic effect in superconducting spintronics
    on July 10, 2018 at 3:34 pm

    Superconductor-ferromagnet structures are widely regarded as the building blocks of superconducting spintronic technology. More conventional spintronic devices typically require large currents, so researchers are investigating the viability of low-resistance superconductors. Their new results could answer longstanding questions about how SF structures interact. […]