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Physics News

  • Scientists find evidence for light-by-light scattering, long standing prediction of the Standard Model

    Scientists from the ATLAS collaboration at the LHC have found evidence for light-by-light scattering, in which two photons interact and change their trajectory. Researchers from DESY, the Johannes Gutenberg University Mainz and the AGH University of Science and Technology in Krakow performed the study.
    Tue, 28 Feb 2017 07:53:43 EST
  • New droplet-on-tape method assists biochemical research at X-ray lasers

    Biological samples studied with intense X-rays at free-electron lasers are destroyed within nanoseconds after they are exposed. Because of this, the samples need to be continually refreshed to allow the many images needed for an experiment to be obtained. Conventional methods use jets that supply a continuous stream of samples, but this can be very wasteful as the X-rays only interact with a tiny fraction of the injected material.
    Tue, 28 Feb 2017 07:52:47 EST
  • Martian winds carve mountains, move dust, raise dust

    On Mars, wind rules. Wind has been shaping the Red Planet's landscapes for billions of years and continues to do so today. Studies using both a NASA orbiter and a rover reveal its effects on scales grand to tiny on the strangely structured landscapes within Gale Crater.
    Tue, 28 Feb 2017 06:27:09 EST
  • Existence of a new quasiparticle demonstrated

    How do molecules rotate in a solvent? Answering this question is complicated, since molecular rotation is perturbed by a very large number of surrounding atoms. For a long time, large-scale computer simulations have been the main approach to model molecule-solvent interactions. However, they are extremely time consuming and sometimes infeasible. Now, Mikhail Lemeshko from the Institute of Science and Technology Austria (IST Austria) has proven that angulons—a certain type of quasiparticle he proposed two years ago—do, in fact, form when a molecule is immersed in superfluid helium. This offers a quick and simple description for rotation of molecules in solvents.
    Tue, 28 Feb 2017 05:16:11 EST
  • Nano 'sandwich' offers unique properties

    Rice University researchers have modeled a nanoscale sandwich, the first in what they hope will become a molecular deli for materials scientists.
    Mon, 27 Feb 2017 16:03:35 EST
  • A rose to store energy: In vivo polymerization and manufacturing of wires and supercapacitors in plants

    A special structure for storing energy known as a supercapacitor has been constructed in a plant for the first time. The plant, a rose, can be charged and discharged hundreds of times. This breakthrough is the result of research at the Laboratory of Organic Electronics at Linköping University.
    Mon, 27 Feb 2017 15:00:03 EST
  • A traffic cop for the cell surface: Researchers illuminate a basic biological process

    On the surfaces of our trillions of cells is a complex crowd of molecules moving around, talking to each other, occasionally segregating themselves, and triggering basic functions ranging from pain sensation to insulin release.
    Mon, 27 Feb 2017 12:55:37 EST
  • Chiral superconductivity experimentally demonstrated for the first time

    (Phys.org)—Scientists have found that a superconducting current flows in only one direction through a chiral nanotube, marking the first observation of the effects of chirality on superconductivity. Until now, superconductivity has only been demonstrated in achiral materials, in which the current flows in both directions equally.
    Mon, 27 Feb 2017 09:30:01 EST
  • Proposed method to cause an atom to emit the same light as another atom

    (Phys.org)—A team of researchers at Princeton University has found a way to cause any atom to mimic the light emissions of any other atom. In their paper published in the journal Physical Review Letters, the team reveals how they uncovered this trick and suggest some applications that might benefit from its use.
    Mon, 27 Feb 2017 08:40:01 EST
  • Destabilized solitons perform a disappearing act

    When your heart beats, blood courses through your veins in waves of pressure. These pressure waves manifest as your pulse, a regular rhythm unperturbed by the complex internal structure of the body. Scientists call such robust waves solitons, and in many ways they behave more like discrete particles than waves. Soliton theory may aid in the understanding of tsunamis, which—unlike other water waves—can sustain themselves over vast oceanic distances.
    Mon, 27 Feb 2017 08:29:58 EST
  • Sound-shaping metamaterial invented

    A super-material that bends, shapes and focuses sound waves that pass through it has been invented by scientists.
    Mon, 27 Feb 2017 06:06:10 EST
  • The ancient art of kirigami is inspiring a new class of materials

    Origami-inspired materials use folds in materials to embed powerful functionality. However, all that folding can be pretty labor intensive. Now, researchers at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) are drawing material inspiration from another ancient Japanese paper craft—kirigami.
    Fri, 24 Feb 2017 15:51:32 EST
  • Crumpled Mylar found to hold memory of how long it was crumpled

    (Phys.org)—A small team of researchers at Harvard University has found that crumpled sheets of Mylar hold a memory of how long they were crumpled. In their paper published in the journal Physical Review Letters, the group describes experiments they conducted in their lab with Mylar and tubes affixed with pressure measuring devices and what they learned about the disordered mechanical system.
    Fri, 24 Feb 2017 08:30:01 EST
  • Researchers use laser-generated bubbles to create 3-D images in liquid

    Researchers have developed a completely new type of display that creates 3D images by using a laser to form tiny bubbles inside a liquid "screen." Instead of rendering a 3D scene on a flat surface, the display itself is three-dimensional, a property known as volumetric. This allows viewers to see a 3D image in the columnar display from all angles without any 3D glasses or headsets.
    Thu, 23 Feb 2017 10:48:08 EST
  • Scientists solve puzzle of turning graphite into diamond

    (Phys.org)—Researchers have finally answered a question that has eluded scientists for years: when exposed to moderately high pressures, why does graphite turn into hexagonal diamond (also called lonsdaleite) and not the more familiar cubic diamond, as predicted by theory?
    Thu, 23 Feb 2017 09:30:01 EST
  • Tiny particles with a big, cool role to play in microscopy

    Researchers at UTS, as part of a large international collaboration, have made a breakthrough in the development of compact, low-cost and practical optical microscopy to achieve super-resolution imaging on a scale 10 times smaller than can currently be achieved with conventional microscopy.
    Thu, 23 Feb 2017 07:19:15 EST
  • Science versus the 'Horatio Alger myth'

    In a new study published today in the journal PLOS ONE, Los Alamos National Laboratory scientists have taken a condensed matter physics concept usually applied to the way substances such as ice freeze, called "frustration," and applied it to a simple social network model of frustrated components. They show that inequality of wealth can emerge spontaneously and more equality can be gained by pure initiative.
    Wed, 22 Feb 2017 11:50:13 EST
  • Researchers gain insight into a physical phenomenon that leads to earthquakes

    Scientists have gotten better at predicting where earthquakes will occur, but they're still in the dark about when they will strike and how devastating they will be.
    Wed, 22 Feb 2017 11:23:52 EST
  • Physicists investigate erasing information at zero energy cost

    (Phys.org)—A few years ago, physicists showed that it's possible to erase information without using any energy, in contrast to the assumption at the time that erasing information must require energy. Instead, the scientists showed that the cost of erasure could be paid in terms of an arbitrary physical quantity such as spin angular momentum—suggesting that heat energy is not the only conserved quantity in thermodynamics.
    Wed, 22 Feb 2017 09:30:01 EST
  • Time crystals—how scientists created a new state of matter

    Some of the most profound predictions in theoretical physics, such as Einstein's gravitational waves or Higgs' boson, have taken decades to prove with experiments. But every now and then, a prediction can become established fact in an astonishingly short time. This is what happened with "time crystals", a new and strange state of matter that was theorised, disproved, revamped and finally created in just five years since it was first predicted in 2012.
    Wed, 22 Feb 2017 08:48:56 EST