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.

  • New input for quantum simulations
    on January 18, 2018 at 7:29 pm

    Researchers have devised new methods to create interesting input states for quantum computations and simulations. The new methods can be used to simulate certain electronic systems to arbitrarily high accuracy. […]

  • Coupling experiments to theory to build a better battery
    on January 18, 2018 at 3:08 pm

    Researchers has reported that a new lithium-sulfur battery component allows a doubling in capacity compared to a conventional lithium-sulfur battery, even after more than 100 charge cycles. […]

  • Building blocks to create metamaterials
    on January 18, 2018 at 3:08 pm

    Engineers have created a method to systematically design metamaterials using principles of quantum mechanics. […]

  • Using electricity to switch magnetism
    on January 18, 2018 at 3:07 pm

    Scientists have managed to use electrical fields to control the magnetic oscillations of certain ferrous materials. This has opened up huge potential for computer technology applications, as data is currently transferred in the form of electrical signals but stored magnetically. […]

  • Semiconductor breakthrough may be game-changer for organic solar cells
    on January 17, 2018 at 6:11 pm

    In an advance that could push cheap, ubiquitous solar power closer to reality, researchers have found a way to coax electrons to travel much further than was previously thought possible in the materials often used for organic solar cells and other organic semiconductors. […]

  • Physicists succeed in measuring mechanical properties of 2-D monolayer materials
    on January 17, 2018 at 3:26 pm

    Physicists have for the first time succeeded in characterizing the mechanical properties of free-standing single-atom-thick membranes of graphene. […]

  • Ultra-thin optical fibers offer new way to 3-D print microstructures
    on January 17, 2018 at 3:26 pm

    For the first time, researchers have shown that an optical fiber as thin as a human hair can be used to create microscopic structures with laser-based 3-D printing. The innovative approach might one day be used with an endoscope to fabricate tiny biocompatible structures directly into tissue inside the body. […]

  • Building molecular wires, one atom at a time
    on January 17, 2018 at 2:23 pm

    Researchers have found a simple way to construct and deconstruct molecular metal chains, atom-by-atom. […]

  • New process could slash energy demands of fertilizer, nitrogen-based chemicals
    on January 16, 2018 at 7:43 pm

    Nitrogen-based synthetic fertilizer forms the backbone of the world food supply, but its manufacture requires a tremendous amount of energy. Now, computer modeling points to a method that could drastically cut the energy needed by using sunlight in the manufacturing process. […]

  • Mysteries of a promising spintronic material revealed
    on January 16, 2018 at 4:11 pm

    Researchers have used an unconventional approach to determine the strength of the electron spin interactions with the optical phonons in antiferromagnetic nickel oxide (NiO) crystals. […]

  • Gyroscopes lead scientists to unusual state of matter in a disorganized structure
    on January 15, 2018 at 5:05 pm

    You don't have to be perfectly organized to pull off a wave, according to scientists. Using a set of gyroscopes linked together, physicists explored the behavior of a material whose structure is arranged randomly, instead of an orderly lattice. They found they could set off one-way ripples around the edges, much like spectators in a sports arena -- a 'topological wave,' characteristic of a particularly unusual state of matter. […]

  • Surprising discovery could lead to better batteries
    on January 12, 2018 at 8:12 pm

    Scientists have observed the concentration of lithium inside individual nanoparticles reverse at a certain point, instead of constantly increasing. This discovery is a major step toward improving the battery life of consumer electronics. […]

  • Quantum leap: Computational approach launches new paradigm in electronic structure theory
    on January 12, 2018 at 6:29 pm

    A group of researchers specializing in quantum calculations has proposed a radically new computational approach to solving the complex many-particle Schrödinger equation, which holds the key to explaining the motion of electrons in atoms and molecules. […]

  • Breaking bad metals with neutrons
    on January 11, 2018 at 7:16 pm

    By combining the latest developments in neutron scattering and theory, researchers are close to predicting phenomena like superconductivity and magnetism in strongly correlated electron systems. It is likely that the next advances in superconductivity and magnetism will come from such systems, but they might also be used in completely new ways such as quantum computing. […]

  • Pulses of light to encrypt data and protect security of cryptocurrencies
    on January 11, 2018 at 7:10 pm

    Data travels through thousands of miles of fiber optic cables underneath the world's oceans -- via pulses of light. And according to experts, the data in these cables is at great risk of being intercepted. However, a newly designed frequency comb might be an effective tool for data encryption. […]

  • Quantum Dot: Extremely bright and fast light emission
    on January 10, 2018 at 6:14 pm

    A type of quantum dot that has been intensively studied in recent years can reproduce light in every color and is very bright. An international research team has now discovered why this is the case. The quantum dots could someday be used in light-emitting diodes. […]

  • New oxide and semiconductor combination builds new device potential
    on January 10, 2018 at 4:29 pm

    Researchers have now grown a 2DEG system on gallium arsenide, a semiconductor that's efficient in absorbing and emitting light. This development is promising for new electronic devices that interact with light, such as new kinds of transistors, superconducting switches and gas sensors. […]

  • Making the internet of things possible with a new breed of 'memristors'
    on January 10, 2018 at 4:29 pm

    Easily printable, organic thin films can retain data for more than 10 years without power, work with low voltages -- and become the building block of future computers that mimic the human brain. […]

  • The atomic dynamics of rare everlasting electric fields
    on January 10, 2018 at 4:29 pm

    Researchers have discovered the atomic mechanisms that give the unusual material yttrium manganite its rare magnetic and electric properties. All it took was ricocheting neutrons off the atoms of a sample of the material heated to 3,000 degrees Fahrenheit. […]

  • Surprising result shocks scientists studying spin
    on January 8, 2018 at 5:16 pm

    Scientists analyzing results of spinning protons striking different sized atomic nuclei at the Relativistic Heavy Ion Collider (RHIC) found an odd directional preference in the production of neutrons that switches sides as the size of the nuclei increases. The results offer new insight into the mechanisms affecting particle production in these collisions. […]

  • Quantum 'spooky action at a distance' becoming practical
    on January 6, 2018 at 3:40 pm

    Scientists have overcome a major challenge in applying a strange quantum effect to real applications. […]

  • Optical efficiency in nanophotonic devices
    on January 4, 2018 at 6:16 pm

    Nanophotonic devices have direct applications for use in ultra-high resolution microscopes, solar energy harvesting, optical computing and targeted medical therapies. […]

  • Leaving Flatland: Quantum Hall effect physics in 4-D
    on January 4, 2018 at 5:41 pm

    Researchers have implemented a dynamical version of the four-dimensional quantum Hall effect with ultracold atoms in an optical superlattice potential. […]

  • Four-dimensional physics in two dimensions
    on January 3, 2018 at 6:27 pm

    For the first time, physicists have built a two-dimensional experimental system that allows them to study the physical properties of materials theorized to exist only in four-dimensional space. An international team of researchers demonstrated that the behavior of particles of light can be made to match predictions about the four-dimensional version of the 'quantum Hall effect' -- a phenomenon at the root of three Nobel Prizes in physics -- in a two-dimensional array of 'waveguides.' […]

  • Laser evaporation technology to create new solar materials
    on January 3, 2018 at 3:11 pm

    Researchers use lasers to blast solutions containing delicate organic compounds to grow new types of crystals for solar cells, light-emitting diodes and photodetectors. […]

  • 'Quantum radio' may aid communications and mapping indoors, underground and underwater
    on January 2, 2018 at 8:32 pm

    Researchers have demonstrated that quantum physics might enable communications and mapping in locations where GPS and ordinary cellphones and radios don't work reliably or even at all, such as indoors, in urban canyons, underwater and underground. […]

  • Tweaking quantum dots powers-up double-pane solar windows
    on January 2, 2018 at 6:48 pm

    Researchers are creating double-pane solar windows that generate electricity with greater efficiency and also create shading and insulation. It's all made possible by a new window architecture which utilizes two different layers of low-cost quantum dots tuned to absorb different parts of the solar spectrum. The approach complements existing photovoltaic technology by adding high-efficiency sunlight collectors to existing solar panels or integrating them as semitransparent windows into a building's architecture. […]

  • Locating the precise reaction path: Methane dissociation on platinum
    on January 2, 2018 at 4:42 pm

    So far, the search for catalysts even better than transition metals has been largely based on trial and error, and on the assumption that catalyzed reactions take place on step edges and other atomic defect sites of the metal crystals. An international research team has combined experiments using advanced infrared techniques with quantum theory to explore methane dissociation reactions in minute detail. […]

  • Low-altitude skiing can slow down aging -- relativistically
    on December 27, 2017 at 8:04 pm

    A doctor could tell you that skiing and running will most likely slow down aging. But how could mathematicians and physicists give their scientific support to this point of view? […]

  • New model considers an extra factor to improve our prediction of nuclear fission
    on December 27, 2017 at 7:59 pm

    Researchers have proposed an improved model for predicting the generation of thermal energy from nuclear fission processes, by focusing on Uranium-236. This model can help improve efficiency in nuclear power generation. […]