An international research team has proposed a way to increase the efficiency of wireless power transfer over long distances and tested it with numerical simulations and experiments. To achieve this, they beamed power between two antennas, one of which was excited with a back-propagating signal of specific amplitude and phase. The new development will improve wireless power transmission. This study also offers new approaches to wireless communication, where external conditions can change unpredictably.
Collaborative research team of Prof. Jun Takeda and Associate Prof. Ikufumi Katayama in the laboratory of Yokohama National University (YNU) and Nippon Telegraph and Telephone (NTT) successfully observed petahertz (PHz: 1015 of a hertz) electron oscillation. The periodic electron oscillations of 667-383 attoseconds (as: 10-18 of a second) is the fastest that has ever been measured in the direct time-dependent spectroscopy in solid-state material.
Scientists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) together with colleagues from the Helmholtz-Zentrum Berlin (HZB) and the University of Virginia in Charlottesville, USA have found a way to write and delete magnets in an alloy using a laser beam -- a surprising effect. The reversibility of the process opens up new possibilities in the fields of material processing, optical technology, and data storage.
A quantum simulation of topological phases of matter at finite temperature has be realized for the first time by a group of researchers from Universidad Complutense, IBM, ETH Zurich, MIT and Harvard University. These findings open the door to unexpected applications in robust quantum technologies against thermal fluctuations such as quantum computers or memories.
A clever combination of novel technologies enables us to study promising materials for the electronics of tomorrow. Using short laser pulses, a research team led by Misha Ivanov of the Max Born Institute in Berlin together with scientists from the Russian Quantum Center in Moscow have now shed light on the extremely rapid processes taking place within novel materials. Their results have appeared in the prestigious journal "Nature Photonics".
Researchers at Aalto University, Finland are the first to create a Bose-Einstein condensate of light coupled with metal electrons, so-called surface plasmon polaritons.
NUST MISIS scientists have finally found out why a material that could potentially become the basis for ultra-fast memory in new computers is formed. Professor Petr Karpov and Serguei Brazovskii, both researchers at NUST MISIS, have managed to develop a theory which explains the mechanism of the latent state formation in layered tantalum disulfide, one of the most promising materials for modern microelectronics.
NICT and Fujikura developed a 3-mode optical fiber, capable of wide-band wavelength multiplexing transmission with standard outer diameter and have successfully demonstrated a transmission experiment over 1,045 km with a data-rate of 159 Tb/s. The product of data-rate and distance: 166 Pb/s×km is the world record in a standard outer diameter few-mode optical fiber. This achievement shows that standard outer diameter multimode fibers can be used for communication of high capacity optical backbone transmission systems.
An international group of scientists from Russia, the United Kingdom, and Germany have presented an alternative qubit design which can be used to build a quantum computer. Nano-wires made of superconductors are the design's main elements. In the first experiments, the new superconductor qubit proved to be no worse than the traditional one built on Josephson junctions.
EPFL scientists have engineered a tiny guitar string that vibrates 1 billion times when plucked. They would like to use it as a microphone for light.