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Physics News

  • A space playground for the fourth state of matter

    A recipe to understand atomic structures:
    Fri, 14 Dec 2018 10:30:01 EST
  • How complexity science can quickly detect climate record anomalies

    The history of our climate is written in ice. Reading it is a matter of deciphering the complex signals pulled from tens of thousands of years of accumulated isotopes frozen miles below the surface of Antarctica.
    Fri, 14 Dec 2018 10:16:38 EST
  • Scientists dismiss the idea of travel through wormholes

    A RUDN employee and Brazilian colleagues have called into question the concept of using stable wormholes as portals to different points of space-time. The results of the studies were published in Physical Review D.
    Fri, 14 Dec 2018 09:40:02 EST
  • When heat ceases to be a mystery, spintronics becomes more real

    The development of spintronics depends on materials that guarantee control over the flow of magnetically polarized currents. However, it is hard to talk about control when the details of heat transport through the interfaces between materials are unknown. This thermal gap in our material knowledge has just been filled thanks to a Polish-German team of physicists, who now describe in detail the dynamic phenomena occurring at the interface between a ferromagnetic metal and a semiconductor.
    Fri, 14 Dec 2018 09:02:00 EST
  • It's not so easy to gain the true measure of things

    I teach measurement – the quantification of things. Some people think this is the most objective of the sciences; just numbers and observations, or what many people call objective facts.
    Fri, 14 Dec 2018 08:54:42 EST
  • Using Wi-Fi signals to perform analog, wave-based computations

    A pair of researchers, one with the Langevin Institute, the other a company called Greenerwave, both in France, has developed a way to use ordinary Wi-Fi signals to perform analog, wave-based computations. In their paper published in the journal Physical Review X, Philipp del Hougne and Geoffroy Lerosey describe their experiments and what they represent.
    Fri, 14 Dec 2018 08:53:41 EST
  • Magic number colloidal clusters

    Complexity in nature often results from self-assembly, and is considered particularly robust. Compact clusters of elemental particles can be shown to be of practical relevance, and are found in atomic nuclei, nanoparticles or viruses. An interdisciplinary team of researchers led by professors Nicolas Vogel and Michael Engel at Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) has decoded the structure and the process behind the formation of one class of such highly ordered clusters. Their findings have increased the understanding of how structures are formed in clusters, and have now been published in Nature Communications.
    Fri, 14 Dec 2018 08:48:39 EST
  • The splendid generative potential of the Sierpinski triangle

    One transistor can become an oscillator with a surprising richness of behavior. However, even more interesting effects emerge if the structure of connections is fractal and shows some imperfections. Could similar rules explain the diversity and complexity of human brain dynamics?
    Fri, 14 Dec 2018 08:48:24 EST
  • Better superconductors from ceramic copper oxides

    Medical magnetic resonance imaging, high-power microwave generators, superconducting magnetic energy storage units, and the solenoids in nuclear fusion reactors are very different technologies which all critically rely on the ability of superconducting materials to carry and store large electric currents in a compact space without overheating or dissipating large amounts of energy.
    Fri, 14 Dec 2018 06:26:12 EST
  • Good vibrations: Neutrons lend insight into acoustic fracking

    Hydraulic fracturing contributes significantly to US energy production. It works by tapping hard-to-reach pockets of oil and natural gas where more traditional drilling methods fall short. However, the process requires large amounts of water and chemicals, which can negatively impact public health and the environment.
    Fri, 14 Dec 2018 01:09:29 EST
  • Timken turns to neutrons to get its bearings on internal stresses

    Bearings are used in many common applications such as wheels, drills, and even toys like the popular fidget spinner. Those applications and others like them rely on bearings to allow for smooth, efficient motion for millions of rotations.
    Fri, 14 Dec 2018 01:07:41 EST
  • Data use draining your battery? Tiny device to speed up memory while also saving power

    The more objects we make "smart," from watches to entire buildings, the greater the need for these devices to store and retrieve massive amounts of data quickly without consuming too much power.
    Thu, 13 Dec 2018 13:02:07 EST
  • Tangled magnetic fields power cosmic particle accelerators

    Magnetic field lines tangled like spaghetti in a bowl might be behind the most powerful particle accelerators in the universe. That's the result of a new computational study by researchers from the Department of Energy's SLAC National Accelerator Laboratory, which simulated particle emissions from distant active galaxies.
    Thu, 13 Dec 2018 12:52:05 EST
  • Increasing the effectivity of condensation through electrowetting

    Researchers of the department of Physics of Complex Fluids of the University of Twente's MESA+ institute have succeeded in increasing the effectivity of condensation through gravity-driven electrowetting. "We have been able to increase condensation by 50 percent, with room for further increase," the researchers say. Higher efficiency can be in particular interesting for heat transfer and fog harvesting – fetching water from the atmosphere.
    Thu, 13 Dec 2018 10:20:42 EST
  • New discovery improves use of optical tweezers

    This year's Nobel Prize in Physics, awarded for discoveries in laser physics, recognizes optical tweezers. Now researchers from the University of Gothenburg have developed a method that greatly simplifies and improves the use of optical tweezers.
    Thu, 13 Dec 2018 10:17:24 EST
  • Stretched quantum magnetism uncovered by quantum simulation

    By studying ultracold atoms trapped in artificial crystals of light, Guillaume Salomon, a postdoc at the Max-Planck-Institute of Quantum Optics and a team of scientists have been able to directly observe a fundamental effect of one-dimensional quantum systems. By detecting the atoms one-by-one, the team observed a stretching of the magnetic ordering when diluting the atoms in the lattice. The study was conducted this year in the Division led by Immanuel Bloch, a director at the Max Planck Institute of Quantum Optics and professor at the Ludwig Maximilians University in Munich. The new findings are relevant, for example, in connection to high-temperature superconductors that conduct electricity without loss.
    Thu, 13 Dec 2018 10:17:10 EST
  • Researchers lay foundation for smart contrast medium

    Molecular imaging techniques are playing an increasingly important role in medical diagnostics and developing new treatment methods. An interdisciplinary team of researchers from the fields of chemistry, material sciences, biomedicine, quantum physics and toxicology has managed to develop the foundations for a novel contrast medium for MRI in the framework of the FET Open EU excellence programme. Molecular changes in the human body could thus become detectable by MRI and improve and elucidate the treatment of diseases such as cancer, Alzheimer's and heart diseases.
    Thu, 13 Dec 2018 10:16:46 EST
  • The secret life of cloud droplets

    Do water droplets cluster inside clouds? Researchers confirm two decades of theory with an airborne imaging instrument.
    Thu, 13 Dec 2018 10:14:07 EST
  • Mobile device makes the detection of parasitic infections faster and more sensitive using artificial intelligence

    Parasitic infections affect hundreds of millions of people, posing a serious public health threat worldwide. For example, sleeping sickness and Chagas disease are neglected tropical diseases that are caused by the bloodborne Trypanosoma parasite. Historically given little attention, these devastating diseases affect people mainly in sub-Saharan Africa and South America, causing enormous socioeconomic burden.
    Thu, 13 Dec 2018 10:08:31 EST
  • Invention promises airport security screening without queues

    A research team led by The Australian National University (ANU) has invented a device that could be developed into ultra-sensitive cameras for security screening which would not require people to queue at airports.
    Thu, 13 Dec 2018 10:00:39 EST