Scientists in Korea have developed a new wireless power transfer (WPT) technique using miniaturized receivers that enables more efficient wireless power transfer at greater distances than ever before. WPTuses overlapping magnetic fields, rather than wires, to transmit electric power. This technology is believed to have wide range of potential uses, from wireless cell phone … [Read more...]
Controlling Graphene’s Conductivity Using Light
Researchers at MIT have discovered a novel way of controlling graphene’s electrical behavior, using light pulses to modify the material’s conductivity. Because of its lightness and efficacy, graphene has been one of the most talked-about materials in recent years, with a wide range of still-untapped uses and applications in science and technology. In a paper recently published … [Read more...]
Scientists Investigate ‘Quantum Glue’ Trigger for Superconductivity
Physicists at the University of Illinois at Chicago have identified the “quantum glue” that binds electrons together to evoke superconductivity in a crucial step towards the creation of high-speed energy transport methods that conduct electricity without current loss. The new research, published online in the Proceedings of the National Academy of Sciences, is a collaboration … [Read more...]
New Single-Photon Optical Transistor Could Lead to Faster Data Transmission
Using an ultracold quantum gas, researchers at the Max Planck Institute of Quantum Optics in Germany have created a new kind of transistor-like optical amplifier that allows for a twentyfold amplification of single-photon signals. Although fiberoptic technology has helped speed along data transmission and telecommunications in general, researchers have hoped to find another … [Read more...]
Lasers Could Replace Quartz in Oscillators
Researchers at the California Institute of Technology have a developed a new method that uses a pair of laser beams, instead of a quartz crystal, to tune oscillators. The achievement could provide a better frequency reference to future consumer electronics and high-end navigation and radar systems. Present in nearly all electronic devices, oscillators are electronic circuits … [Read more...]
Optical Cables Made of Air Could Boost Laser Communications
A breakthrough in the development of waveguide technology could extend the reach of light signals to support long-range laser communications and environmental monitoring in the upper atmosphere and beyond, reports new research from scientists at the University of Maryland. Known as an “air waveguide,” the new technology acts much like a fiber-optic cable, guiding light beams … [Read more...]
Tunable Nanoantennas Made More Customizable than Ever Before
Researchers at the University of Illinois at Urbana-Champaign have developed a new kind of tunable nanoantenna that could point towards novel plasmonic-based optomechanical systems that use plasmonic field enhancement to instantiate mechanical motion. The research, led by Kimani Toussaint, Ph.D., associate professor of mechanical science and engineering at the University of … [Read more...]
New Hyperbolic Metamaterial Lets Light Out, Not In
Researchers at the National Institute for Standards and Technology (NIST) have developed a new metamaterial made of silver, glass, and chromium that allows for the one-way transmission of visible light. Metamaterials are artificial materials engineered, combined and structured, often in patterns, to achieve certain properties. Among other functions, certain metamaterials can … [Read more...]
Research on Radio Wave Behavior May Improve Multipath Interference Mitigation
New research on how radio waves interact and exchange energy could lead to the development of more precise indoor location systems. Like all electromagnetic waves, radio waves propagate at the speed of light, carrying a balance of electric and magnetic energy. The ratio between the magnitudes of the electric and magnetic fields is a physical constant known as the impedance of … [Read more...]
Valley Current Properties of New Transistor Material Could Outdo Silicon
Researchers at Cornell University have identified and tested a semiconducting compound that could outdo silicon in terms of performance, and could signal the emergence of a new kind of transistor material in electronics. The findings, compiled in the paper, “The Valley Hall Effect in MoS2 Transistors,” published recently in Science, revealed promising conductive capabilities … [Read more...]
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