Physicists from Russia and Europe have demonstrated the real possibility of using superconductor/ferromagnet systems to create magnonic crystals, which will be at the core of spin-wave devices to come in the post-silicon era of electronics. The paper was published in the journal Advanced Science.
Scientists at Tokyo Institute of Technology (Tokyo Tech), Aoyama-Gakuin University, and J-PARC Center unify condensed matter physics and quantum physics by experimentally characterizing magnetism-related quantum phenomena in Ba2CoSi2O6Cl2.
Physicists have found 'electron pairing,' a hallmark feature of superconductivity, at temperatures and energies well above the critical threshold where superconductivity occurs.
Physicists used to think that superconductivity -- electricity flowing without resistance or loss -- was an all or nothing phenomenon. But new evidence suggests that, at least in copper oxide superconductors, it's not so clear cut. Researchers at UConn observed electrons in these materials traveling in coherent pairs, a hallmark of superconductivity, at much higher temperatures than those at which the material superconducts. The observation constrains condensed matter theory, and may give clues to practical high-temperature conductors.
Empa has developed an innovative, electrohydraulically actuated valve train for internal combustion engines, that enables completely free adjustment of stroke and timing, while at the same time being robust and cost effective. This valve train was mounted on a serial production engine and has been running successfully for several months. The new technology saves up to 20% fuel.
Scientists at the Max Planck Institute for Polymer Research (MPI-P) led by Dr. Kamal Asadi have solved a four decade long challenge of producing very thin nylon films that can be used for instance in electronic memory components. The thin nylon films are several 100 times thinner than human hair and could thus be attractive for applications in bendable electronic devices or for electronics in clothing.
The 'Landau-level laser' is an exciting concept for an unusual radiation source. It has the potential to efficiently generate terahertz waves, which can be used to penetrate materials as well as for future data transmission. So far, however, nearly all attempts to make such a laser have failed. An international team has now taken an important step in the right direction: In the journal Nature Photonics, they describe a material that generates terahertz waves by simply applying an electric current.
Newly discovered properties in the compound uranium ditelluride show that it could prove highly resistant to one of the nemeses of quantum computer development -- the difficulty with making such a computer's memory storage switches, called qubits, function long enough to finish a computation before losing the delicate physical relationship that allows them to operate as a group. This relationship, called quantum coherence, is hard to maintain because of disturbances from the surrounding world.
A breakthrough in understanding how the quasi-particles known as magnetic monopoles behave could lead to the development of new technologies to replace electric charges.
Scientists at EPFL have developed a tiny pump that could play a big role in the development of autonomous soft robots, lightweight exoskeletons and smart clothing. Flexible, silent and weighing only one gram, it is poised to replace the rigid, noisy and bulky pumps currently used. The scientists' work has just been published in Nature.