A team of researchers have demonstrated a way to emit and control quantum light generated using a chip made from silicon—one of the most widely used materials for modern electronics. The researchers say practical applications of quantum optics will seem more feasible if devices for generating and controlling these photons can be manufactured using conventional materials from the semiconductor industry.
The Internet is a massive place, linking billions of devices which share data that should exceed the zettabyte mark by 2016. Even as data transfer grows, the number of devices connected to the Internet will soon experience a geometric rise as well.
Credit card fraud and identify theft are serious problems for consumers and industries. Though corporations and individuals work to improve safeguards, it has become increasingly difficult to protect financial data and personal information from criminal activity. Fortunately, new insights into quantum physics may soon offer a solution.
New findings could provide a pathway toward a kind of 2-D microchip that would make use of a characteristic of electrons other than their electrical charge, as in conventional electronics. The new approach is dubbed “valleytronics,” because it makes use of properties of an electron that can be depicted as a pair of deep valleys on a graph of their traits.
Reality isn’t always what it seems, as we learned in the groundbreaking film The Matrix. Neo, the movie’s hero, learns this lesson from a young monk who holds a spoon that bends and twists on its own, as if by magic. “Do not try and bend the spoon,” the boy tells Neo. “That’s impossible. Instead only try to realize the truth.”
Cities like Miami are all too familiar with hurricane-related power outages. But a Johns Hopkins Univ. analysis finds climate change will give other major metro areas a lot to worry about in the future. Johns Hopkins engineers created a computer model to predict the increasing vulnerability of power grids in major coastal cities during hurricanes.
When the people whose houses hug the narrow warren of streets paralleling the busiest urban freeway in America began to see bumper-to-bumper traffic crawling by their homes a year or so ago, they were baffled. When word spread that the explosively popular new smartphone app Waze was sending many of those cars through their neighborhood in a quest to shave five minutes off a daily rush-hour commute, they were angry and ready to fight back.
In the same way as we now connect computers in networks through optical signals, it could also be possible to connect future quantum computers in a quantum Internet. The optical signals would then consist of individual light particles or photons. One prerequisite for a working quantum Internet is control of the shape of these photons.
In a triumph for cell biology, researchers have assembled the first high-resolution, 3-D maps of entire folded genomes and found a structural basis for gene regulation—a kind of “genomic origami” that allows the same genome to produce different types of cells. The research appears online in Cell.
For decades, the mantra of electronics has been smaller, faster, cheaper. Today, Stanford Univ. engineers add a fourth word: taller. A Stanford team revealed how to build high-rise chips that could leapfrog the performance of the single-story logic and memory chips on today's circuit cards.
ESA is developing technologies for advanced human–machine interaction to transfer the human sense of touch to space.
Researchers have begun to describe theoretical limits on the degree of imprecision that communicating computers can tolerate, with very real implications for the design of communication protocols.
An interstellar mystery of why stars form has been solved thanks to the most realistic supercomputer simulations of galaxies yet made.
A walking molecule, so small that it cannot be observed directly with a microscope, has been recorded taking its first nanometer-sized steps. It's the first time that anyone has shown in real time that such a tiny object – termed a "small molecule walker" – has taken a series of steps.
For the first time, scientists report the development of a stretchable “electronic skin” closely modeled after our own that can detect not just pressure, but also what direction it’s coming from.
Precious elements such as platinum work well as catalysts in chemical reactions, but require large amounts of metal and can be expensive. However, computational modeling below the nanoscale level may allow researchers to design more efficient and affordable catalysts from gold.
Massachusetts Institute of Technology chemists have devised a new way to wirelessly detect hazardous gases and environmental pollutants, using a simple sensor that can be read by a smartphone. These inexpensive sensors could be widely deployed, making it easier to monitor public spaces or detect food spoilage in warehouses.
Materials first developed at Oregon State Univ. more than a decade ago with an eye toward making “transparent” transistors may be about to shake up the field of consumer electronics; and the first uses are not even based on the transparent capability of the materials. In the continued work and in collaboration with private industry, certain transparent transistor materials are now gaining some of their first commercial applications.
Computers are good at identifying patterns in huge data sets. Humans, by contrast, are good at inferring patterns from just a few examples. In a recent paper, Massachusetts Institute of Technology researchers present a new system that bridges these two ways of processing information, so that humans and computers can collaborate to make better decisions.
An odd, iridescent material that's puzzled physicists for decades turns out to be an exotic state of matter that could open a new path to next-generation electronics. Physicists at the Univ. of Michigan have discovered or confirmed several properties of the compound samarium hexaboride that raise hopes for finding the silicon of the quantum era. They say their results also close the case of how to classify the material.
Stanford Univ. engineers have designed and built a prism-like device that can split a beam of light into different colors and bend the light at right angles, a development that could eventually lead to computers that use optics, rather than electricity, to carry data.
In a study in Neuron, scientists describe a new high data-rate, low-power wireless brain sensor. The technology is designed to enable neuroscience research that cannot be accomplished with current sensors that tether subjects with cabled connections. Experiments in the paper confirm that new capability.
Radio frequency identification (RFID) tags have become increasingly popular for tracking everything from automobiles being manufactured on an assembly line to zoo animals in transit to their new homes. Now, thanks to a new NIST report, the next beneficiaries of RFID technology may soon be law enforcement agencies responsible for the management of forensic evidence.
Sandia National Laboratories is studying how environments, including radiation that originates from a nuclear weapon itself, could affect the performance of electronics in the W76-1 warhead as they age. Sandia is helping replace W76 warheads in the U.S. stockpile with a refurbished version under the W76-1 Life Extension Program (LEP). The ballistic missile warhead is carried on the Trident II D5 missile aboard Ohio-class Navy submarines.
Bathymetric lidars are used today primarily to map coastal waters. At nearly 600 lbs, the systems are large and heavy, and they require costly, piloted aircraft to carry them. A team at the Georgia Tech Research Institute has designed a new approach that could lead to bathymetric lidars that are much smaller and more efficient than the current full-size systems.