Electrical engineers in Germany have demonstrated a new kind of building block for digital integrated circuits. Their experiments show that future computer chips could be based on 3-D arrangements of nanometer-scale magnets instead of transistors. In a 3-D stack of nanomagnets, the researchers have implemented a so-called “majority” logic gate, which could serve as a programmable switch in a digital circuit.
Confined photons have many potential applications, such as efficient miniature lasers, on-chip information storage, or tiny sensors on pharmaceuticals. Making a structure that can capture photons is difficult, but scientists in the Netherlands have recently devised a new type of resonant cavity inside a photonic crystal that imprisons light in all three dimensions.
Electricity and magnetism rule our digital world. Semiconductors process electrical information, while magnetic materials enable long-term data storage. A Univ. of Pittsburgh research team has discovered a way to fuse these two distinct properties in a single material, paving the way for new ultrahigh density storage and computing architectures.
The largest power outage in U.S. history, the 2003 Northeast blackout, began with one power line in Ohio going offline and ended with more than 50 million people without power throughout the Northeast and the Canadian province of Ontario. Despite the apparent failure of the electric grid during such cascading events, blackouts aren’t necessarily grid failures.
Concrete can be better and more environmentally friendly by paying attention to its atomic structure, according to researchers at Rice Univ., the Massachusetts Institute of Technology and Marseille Univ. The international team of scientists has created computational models to help concrete manufacturers fine-tune mixes for general applications.
As U.S. energy imports dramatically drop it would appear that renewables investment is in jeopardy, including the biofuels market. There’s some evidence to support this; but if declining or stalled investment is predicated on the limited potential of existing technology, much of which still relies on biomass, the biofuels industry may, in fact, be undergoing a natural transition instead of a decline.
Some smartphones are starting to incorporate 3-D gesture sensing based on cameras, but cameras consume significant battery power and require a clear view of the user’s hands. Univ. of Washington engineers have developed a new form of low-power wireless sensing technology that could soon contribute to gesture control by letting users “train” their smartphones to recognize and respond to specific hand gestures near the phone.
Faster, smaller, greener computers, capable of processing information up to 1,000 times faster than currently available models, could be made possible by replacing silicon with materials that can switch back and forth between different electrical states. Recent research in the U.K. show that these phase-change materials have promise in new processors made with chalcogenide glass.
Washington State Univ. professor Rich Lamb has figured out a dramatically easier and more cost-effective way to do research on science curriculum in the classroom, and it could include playing video games. Called “computational modeling,” it involves a computer “learning” student behavior and then “thinking” as students would. Lamb, who teaches science education, says the process could revolutionize the way educational research is done.
Imagine being able to switch out the batteries in electric cars just like you switch out batteries in a photo camera or flashlight. Engineers in California are trying to accomplish just that, in partnership with a local San Diego engineering company. Rather than swapping out the whole battery, which is cumbersome and requires large, heavy equipment, engineers plan to swap out and recharge smaller units within the battery, known as modules.
Chips that use light, rather than electricity, to move data would consume much less power. Of the three chief components of optical circuits—light emitters, modulators and detectors—emitters are the toughest to build. One promising light source for optical chips is molybdenum disulfide (MoS2), which has excellent optical properties when deposited as a single, atom-thick layer.
An interdisciplinary development team that includes Lockheed Martin, the Air Force Research Laboratory and the Univ. of Notre Dame has demonstrated the airworthiness of a new beam control turret being developed for DARPA to give 360-degree coverage for high-energy laser weapons operating on military aircraft. An aircraft equipped with the laser has already conducted eight test flights in Michigan.
The fastest land animal on Earth, the cheetah, is able to accelerate to 60 mph in just a few seconds. As it ramps up to top speed, a cheetah pumps its legs in tandem, bounding until it reaches a full gallop. Now, researchers have developed an algorithm for bounding that they’ve successfully implemented in a fully functional robotic cheetah.
A habitual party crasher, Apple has a history of arriving late and making a big splash in various gadget categories. But can it continue with the Apple Watch? Smartwatches have been around for a few years, but makers such as Samsung and Sony have failed to make them a runaway hit. Apple's Watch won't go on sale until early 2015 and raises questions: Can the company work its magic as it has in the past?
During the six-day IMTS manufacturing technology show in Chicago this week, the “Strati” will be the first vehicle printed in one piece using direct digital manufacturing. The process will take more than 44 hours of print time. A team including Local Motors, Cincinnati Inc. and Oak Ridge National Laboratory will then rapidly assemble it for a historic first set for Saturday.
A team of researchers has discovered a way to cool electrons to -228 C without external means and at room temperature, an advancement that could enable electronic devices to function with very little energy. The process involves passing electrons through a quantum well to cool them and keep them from heating.
A high-tech survey reveals that there is more to Stonehenge than meets the eye, finding previously unknown monuments. Researchers have produced digital maps of what's beneath the World Heritage Site, using ground-penetrating radar, high-resolution magnetometers and other techniques to peer deep into the soil. And they have found some surprises.
Apple is betting that people want to pay with a tap of the phone rather than a swipe of the card. The technology company on Tuesday introduced a new digital wallet service called Apple Pay that is integrated with its Passbook credential-storage app and its fingerprint ID security system. The announcement came as Apple introduced several new products including a new, larger iPhone 6 and a watch.
Rice Univ. wireless researchers have found a way to make the most of the unused UHF TV spectrum by serving up fat streams of data over wireless hotspots that could stretch for miles. In a presentation today at the Association for Computing Machinery's MobiCom 2014 conference, researchers will unveil a multiuser, multiantenna transmission scheme for UHF, a portion of the radio spectrum that is usually reserved for television broadcasts.
Researchers at Princeton Univ. have begun crystallizing light as part of an effort to answer fundamental questions about the physics of matter. The researchers are not shining light through crystal—they are transforming light into crystal. As part of an effort to develop exotic materials such as room-temperature superconductors, the researchers have locked together photons, the basic element of light, so that they become fixed in place.
A $1.1 million National Science Foundation grant to two Rice Univ. computer science groups will allow them to build cloud computing tools to help analyze evolutionary patterns. With the three-year grant, Christopher Jermaine and Luay Nakhleh, both associate professors of computer science, will develop parallel processing tools that track the evolution of genes and genomes across species.
Technology being honed by French auto parts maker Valeo uses a dozen ultrasonic sound-wave sensors, 360-degree cameras and a laser scanner to safely park within a few centimeters of other vehicles. Then, when you're done with dinner or a business meeting, the car will return to you after another swipe of the thumb.
Engineers have created a shape-changing "soft" robot that can tread over a variety of adverse environmental conditions including snow, puddles of water, flames, and the crushing force of being run over by an automobile. The pneumatically powered, fully untethered robot was enabled by the careful selection of materials and composites, including silicone elastomer.
Nowadays, video special effects are in demand, and even more so if they’re in 3-D. A new system called OmniCam360, being presented at the International Broadcasting Convention in Amsterdam next week, is able to use depth maps generated by 16 or more cameras to create a virtual camera, similar to movies that are entirely computer-generated. The addition of wave field synthesis allows the sound to match the video in 3-D.
A team of U.S. and Swiss researchers have built a new basic model circuit consisting of a silver nanowire and a single-layer flake of molybdenum disulfide. This new combination of materials can efficiently guide electricity and light along the same tiny wire, a finding that could be a step towards building computer chips capable of transporting digital information at the speed of light.
Proofs are the key method of mathematics. Until now, it has mainly been humans who have verified whether proofs are correct. This could change, says Russian mathematician Vladimir Voevodsky, who points to evidence that, in the near future, computers rather than humans could reliably verify whether a mathematical proof is correct.
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