A team of researchers has demonstrated a new type of holographic memory device that could provide unprecedented data storage capacity and data processing capabilities in electronic devices. The new type of memory device uses spin waves, a collective oscillation of spins in magnetic materials, instead of the optical beams.
A research collaboration consisting of IHP-Innovations for High Performance Microelectronics in Germany and the Georgia Institute of Technology has demonstrated the world's fastest silicon-based device to date. The investigators operated a silicon-germanium (SiGe) transistor at 798 GHz fMAX, exceeding the previous speed record for silicon-germanium chips by about 200 GHz.
There is a big effort in industry to produce electrical devices with more and faster memory and logic. Magnetic memory elements, such as in a hard drive, and in the future in what is called MRAM (magnetic random access memory), use electrical currents to encode information. However, the heat which is generated is a significant problem, since it limits the density of devices and hence the performance of computer chips.
Computer chips keep getting faster because transistors keep getting smaller. But the chips themselves are as big as ever, so data moving around the chip, and between chips and main memory, has to travel just as far. As transistors get faster, the cost of moving data becomes, proportionally, a more severe limitation. So far, chip designers have circumvented that limitation through the use of “caches”.
Researchers at the Korea Advanced Institute of Science and Technology have made a low-powered, high-speed, head-mounted display device they are calling K-Glass. This wearable electronic display has an augmented reality processor that enables users to do things like browse the menu, food and available tables of a restaurant simply by walking up to it and looking at its name.
One of the main challenges for engineers trying to make practical terahertz wave devices is making the lasers powerful and compact enough to be useful. Engineers in the U.K. have reported their new quantum cascade terahertz laser exceeds 1 W output power. The new record more than doubles landmarks set by the Massachusetts Institute of Technology and subsequently by a team from Vienna last year.
For aspiring electrical engineers, New Jersey Institute of Technology has pulled together in one “tall” infographic a brief history of the breakthroughs and impact of electrical engineering advances since the 1830s, when the telegraph marked the first time that electric currents were used to transmit messages. Since then, electrical devices have a dramatic effect on our daily lives.
Nokia is selling a new Windows phone that promises enhanced video-recording capabilities. The new Lumia Icon sports four microphones, compared with the one or two typically found in smartphones. The two on the front are activated when making phone calls, while the two on the rear are used when taking video.
Modern electronics relies on utilizing the charge properties of the electron. The emerging field of atomtronics, however, uses ensembles of atoms to build analogs to electronic circuit elements. Physicists have built a superfluid atomtronic circuit that have allowed them to demonstrate a tool that is critical to electronics: hysteresis. It is the first time that hysteresis has been observed in an ultracold atomic gas.
New research at the Univ. of Arkansas reveals a novel magnetoelectric effect that makes it possible to control magnetism with an electric field. The novel mechanism may provide a new route for using multiferroic materials for the application of RAM (random access memories) in computers and other devices, such as printers.
Legislation unveiled in California would require smartphones and other mobile devices to have a "kill switch" to render them inoperable if lost or stolen. State Sen. Mark Leno, San Francisco District Attorney George Gascon and other elected and law enforcement officials say the bill, if passed, would require mobile devices sold in or shipped to California to have the anti-theft devices starting next year.
It's not quite the bionics of science fiction, but European researchers have created a robotic hand that gave an amputee a sense of touch he hadn't felt in a decade. The experiment lasted only a week, but it let the patient feel if different objects were hard or soft, slim or round, and intuitively adjust his grasp.
Using electrons more like photons could provide the foundation for a new type of electronic device that would capitalize on the ability of graphene to carry electrons with almost no resistance even at room temperature—a property known as ballistic transport. Research reported that electrical resistance in nanoribbons of epitaxial graphene changes in discrete steps following quantum mechanical principles.
A team of engineers from the Univ. of California, Los Angeles has developed a smartphone attachment and application to test water for the presence of mercury, a toxic heavy metal. The new platform could significantly reduce the time and cost of the testing, and it could be particularly useful in regions with limited technological resources.
Research from a team led by North Carolina State Univ. is opening the door to smarter sensors by integrating the smart material vanadium dioxide onto a silicon chip and using lasers to make the material magnetic. The advance paves the way for multifunctional spintronic smart sensors for use in military applications and next-generation spintronic devices.
After compiling a list of more than 100 CEO candidates, Microsoft settled on Satya Nadella a home-grown leader who joined the software maker in the early 1990s. That's back when Google's founders were teenagers and Facebook CEO Mark Zuckerberg was in elementary school.
Your car might see a deadly crash coming even if you don't, the government says, indicating it will require automakers to equip new vehicles with technology that lets cars warn each other if they're plunging toward peril. The action, still some years off, has "game-changing potential" to cut collisions, deaths and injuries, federal transportation officials said at a news conference Monday.
For "big data" to be useful it must first be analyzed, meaning it needs to be stored in such a way that it can be accessed quickly when required. Hard disk storage is slow, and dynamic random access memory cannot be used with today’s large datasets. Researchers have now developed a flash-based storage system for big-data analytics that can dramatically speed up the time it takes to access information.
Continuous miniaturization in microelectronics is nearing physical limits, so researchers are seeking new methods for device fabrication. One promising candidate is a DNA origami technique in which individual strands of the biomolecule self-assemble into arbitrarily-shaped nanostructures. A new simpler strategy combines DNA origami with self-organized pattern formation to do away with elaborate procedures for positioning DNA structures.
Scientists and engineers from an international collaboration have, for the first time, generated and manipulated single particles of light (photons) on a silicon chip. This accomplishment, which required shrinking down key components and integrating them onto a silicon microchip, is a major step forward in the race to build a quantum computer.
Google is selling Motorola's smartphone business to Lenovo for $2.9 billion, a price that makes Google's biggest acquisition look like its most expensive mistake. The deal announced Wednesday will rid Google Inc. of a financial headache that has plagued the Internet company since buying Motorola Mobility for $12.4 billion in 2012.
Scientists in Germany, inspired by the odor-processing nervous system of insects, have recently refined a new technology that is based on parallel data processing. Called neuromorphic computing, their system is composed of silicon neurons linked together in a similar fashion to the nerve cells in our brains. If the assembly is fed with data, all silicon neurons work in parallel to solve the problem.
Univ. of Houston researchers have developed a new stretchable and transparent electrical conductor, bringing the potential for a fully foldable cell phone or a flat-screen television that can be folded and carried under your arm closer to reality. The researchers report that their gold nanomesh electrodes, produced by the novel grain boundary lithography, increase resistance only slightly, even at a strain of 160%.
Google is adding prescription frames and new styles of detachable sunglasses to its computerized, Internet-connected goggles known as Glass. The move comes as Google Inc. prepares to make Glass available to the general population later this year. Glass hasn't actually had glasses in its frame until now.
Researchers in California have made progress in a project to develop fast-blinking light-emitting diode systems for underwater optical communications. They have shown that an artificial metamaterial can improve the “blink speed” of a fluorescent light-emitting dye molecule 76 times faster than normal while increasing brightness 80-fold.