Researchers at the Stanford Univ. School of Medicine have developed two inexpensive adapters that enable a smartphone to capture high-quality images of the front and back of the eye. The adapters make it easy for anyone with minimal training to take a picture of the eye and share it securely with other health practitioners or store it in the patient’s electronic record.
Experts from the Univ. of Buffalo (UB), helped by...
A new mechanism of controlling magnetic states by...
Light-emitting diodes (LEDs) are durable and save...
Using an inexpensive inkjet printer, Univ. of Utah electrical engineers produced microscopic structures that use light in metals to carry information. This new technique, which controls electrical conductivity within such microstructures, could be used to rapidly fabricate superfast components in electronic devices, make wireless technology faster or print magnetic materials.
The USC Viterbi School of Engineering is home to the USC-Lockheed Martin Quantum Computing Center (QCC), a super-cooled, magnetically shielded facility specially built to house the first commercially available quantum computing processors. There are only two in use, and elaborate tests on the quantum processor, called D-Wave, indicate that it does use special laws of quantum mechanics to operate.
The rotor and mast of a wind turbine can oscillate and this plays a big role in equipment development and maintenance. Up to now, this analysis has only been possible at discrete points located directly on equipment. Engineers are now using modern information technology to remotely measure the oscillatory pattern over the entire structure of the facility from several hundred meters away.
About the size of a stapler, this new handheld device developed in Switzerland is able to test a large number of proteins in our body all at once. This optical “lab on a chip” is compact and inexpensive, and it could offer the possibility of quickly analyzing up to 170,000 different molecules in a blood sample.
According to recent findings by an international team of computer engineers, optical data storage does not require expensive magnetic materials because synthetic alternatives work just as well. The team’s discovery that synthetic ferrimagnets can be switched optically brings a much cheaper method for storing data using light a step closer.
A big step in the development of advanced fuel cells and water-alkali electrolyzers has been achieved with the discovery of a new class of bimetallic nanocatalysts that are an order of magnitude higher in activity than the target set by the U.S. Department of Energy for 2017. The new catalysts feature a 3-D catalytic surface activity that makes them significantly more efficient and far less expensive than the best platinum catalysts.
Cornell Univ. researchers have recently led what is probably the most comprehensive study to date of block copolymer nanoparticle self-assembly processes. The work is important, because using polymers to self-assemble inorganic nanoparticles into porous structures could revolutionize electronics.
Associated with unhappy visits to the dentist, “cavity” means something else in the science of optics. An arrangement of mirrors that allows beams of light to circulate in closed paths, or cavities, help us build laser and optical fibers. Now, a research team pushed the concept further by developing an optical “nanocavity” that boosts the amount of light that ultrathin semiconductors absorb.
Researchers at IBM have set a new record for data transmission over a multimode optical fiber, a type of cable that is typically used to connect nearby computers within a single building or on a campus. The data was sent at a rate of 64 Gb/s over a cable 57-m long using a type of laser called a vertical-cavity surface-emitting laser. This rate is 2.5 times faster than the capabilities of today's typical commercial technology.
Last year, a physicist and a mechanical engineer at Northeastern Univ. combined their expertise to integrate electronic and optical properties on a single electronic chip, enabling them to switch electrically using light alone. Now, they have built three new devices that implement this fast technology: an AND-gate, an OR-gate and a camera-like sensor made of 250,000 miniature devices.
The physical implementation of a full-scale universal quantum computer remains an extraordinary challenge for physicists, mainly because existing approaches lose their “quantum-ness” as they are scaled up. At the Joint Quantum Institute, a new modular architecture is being explored that offers scalability to large numbers of qubits, and its components have been tested and are available.
Photonic devices are typically built using customized methods that make them difficult and expensive to manufacture. But at the Optical Fiber Communication Conference and Exposition next month, two new devices, a modulator and a tunable filter, are being presented that are not only as energy-efficient as some of the best devices around, but were built using standard CMOS process technology.
A team of Belgian researchers have made what may be the first optical circuit that uses interconnections that are not only bendable, but also stretchable. These new interconnections, made of a rubbery transparent material called PDMS, guide light along their path even when stretched up to 30% and when bent around an object the diameter of a human finger.
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.
Inspired by the termites’ resilience and collective intelligence, a team of computer scientists and engineers at Harvard Univ. has created an autonomous robotic construction crew. The system needs no supervisor, no eye in the sky and no communication. Exhibiting a swarm-like intelligence, these robots, in any number, can cooperate simply by modifying their environment.
A team in France has greatly miniaturized the light-emitting diode (LED) by creating one from a single polythiophene wire placed between the tip of a scanning tunneling microscope and a gold surface. This nanowire, which is made of the same hydrogen, carbon and sulfur components found in much larger LEDs, emits light only when the current passes in a certain direction.
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.
An international partnerships is aiming to develop robust fingerprint sensors with resolution beyond today’s 500 dpi international standards, the minimum required by the U.S. Federal Bureau of Investigation. The new platform uses vertical piezoelectric nanowire matrices designed using multiphysics modeling software.
Engineers are increasingly turning to plasmonic color filters (PCFs) to create and control a broad spectrum of colors for imaging applications. However, PCF light transmission efficiency has been limited to only about 30%, less than half the rate of conventional filters. Researchers have now developed a new PCF scheme that achieves a transmission efficiency of 60 to 70%.
European scientists from both academia and industry have begun an ambitious new research project focused on an alternative approach to extend Moore's Law. The research project, coordinated IBM Research in Zurich and called COMPOSE³, is based on the use of new materials to replace today's silicon, and on taking an innovative design approach where transistors are stacked vertically, known as 3-D stacking.
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