Radio systems, such as mobile phones and wireless Internet connections, have become an integral part of modern life. However, today's devices use twice as much of the radio spectrum as is necessary. New technology is being developed that could fundamentally change radio design and could increase data rates and network capacity, reduce power consumption, create cheaper devices and enable global roaming.
The U.S. Navy has found that it pays to listen to Rolf Mueller carry on about his bat research....
A revolutionary “smart” cane enabling the visually impaired to instantly identify friends and...
Scientists from the MESA+ Institute for Nanotechnology at the Univ. of Twente in the Netherlands...
Computer scientists at the Univ. of California, San Diego, have combined sophisticated computer vision algorithms and a brain-computer interface to find mines in sonar images of the ocean floor. The study shows that the new method speeds detection up considerably, when compared to existing methods, which mainly consist of visual inspection by a mine detection expert.
Spencer Kent stands nervously in front of Team D.R.A.D.I.S.’ booth at Rice Univ.’s annual Engineering Design Showcase. Judging begins in about 10 min, and his teammate Galen Schmidt is frantically typing computer code into a laptop beside the team’s custom-made radar system.
Google is trying to shake up the wireless phone industry with a low-priced service designed to pressure major carriers into making it more affordable for people to get online and use Google's services. The service, called "Project Fi," debuted Wednesday, about two months after Google revealed its plans to expand its ever-growing empire into providing wireless connections for smartphones.
Researchers at Oregon State Univ. have invented a new technology that can increase the bandwidth of Wi-Fi systems by 10 times, using LED lights to transmit information. The technology could be integrated with existing Wi-Fi systems to reduce bandwidth problems in crowded locations, such as airport terminals or coffee shops, and in homes where several people have multiple Wi-Fi devices.
Imagine having your MRI results sent directly to your phone, with no concern over the security of your private health data. Or knowing your financial information was safe on a server halfway around the world. Or sending highly sensitive business correspondence, without worrying that it would fall into the wrong hands.
NASA's Spitzer Space Telescope has teamed up with a telescope on the ground to find a remote gas planet about 13,000 light-years away, making it one of the most distant planets known. The discovery demonstrates that Spitzer can be used to help solve the puzzle of how planets are distributed throughout our flat, spiral-shaped Milky Way galaxy. Are they concentrated heavily in its central hub, or more evenly spread throughout its suburbs?
Univ. of Michigan scientists and students will build components of a giant camera that will map 30 million galaxies' worth of the universe in three dimensions. The camera is officially known as the Dark Energy Spectroscopic Instrument, abbreviated DESI, and it's designed to help answer one of the most puzzling scientific questions of our time: Why is the expansion of the universe accelerating?
Can old data provide new insights about lightning and the physics of severe weather? A scientist at The Univ. of Alabama in Huntsville (UAH) thinks it can. Supported by a grant from the National Oceanic and Atmospheric Administration, UAH's Dr. Philip Bitzer will spend the next two years studying 17 years of data from NASA's Lightning Imaging Sensor, and breaking lightning flashes into their smallest pieces.
The core circuits of quantum teleportation, which generate and detect quantum entanglement, have been successfully integrated into a photonic chip by an international team of scientists from the universities of Bristol, Tokyo, Southampton and NTT Device Technology Laboratories. These results pave the way to developing ultra-high-speed quantum computers and strengthening the security of communication.
Projects that target aid toward villages and rural areas in the developing world often face time-consuming challenges, even at the most basic level of figuring out where the most appropriate sites are for pilot programs or deployment of new systems such as solar-power for regions that have no access to electricity. Often, even the sizes and locations of villages are poorly mapped, so time-consuming field studies are needed.
A team of Columbia Engineering researchers has invented a technology, full-duplex radio integrated circuits (ICs), that can be implemented in nanoscale CMOS to enable simultaneous transmission and reception at the same frequency in a wireless radio. Up to now, this has been thought to be impossible: transmitters and receivers either work at different times or at the same time but at different frequencies.
Small satellites are becoming increasingly popular tools for Earth-imaging, communications and other applications. But they have major control issues: Once in space, they can’t accurately point cameras or change orbit, and they usually crash and burn within a few months. What these satellites lack is a viable propulsion system.
Users of an email service backed by the German government will soon be able to rely on strong encryption of the kind that used to be the preserve of geeks and hackers.
An increase in Twitter sentiment (the positivity or negativity of tweets) is associated with an increase in state-level enrollment in the Affordable Care Act’s (ACA) health insurance marketplaces — a phenomenon that points to use of the social media platform as a real-time gauge of public opinion and provides a way for marketplaces to quickly identify enrollment changes and emerging issues
A method to selectively enhance or inhibit optical nonlinearities in a chip-scale device has been developed by scientists, led by the Univ. of Sydney. The breakthrough is a fundamental advance for research in photonic chips and optical communications.
For once, slower is better in a new piece of technology. A Yale Univ. lab has developed a new, radio frequency processing device that allows information to be controlled more effectively, opening the door to a new generation of signal processing on microchips. One of the keys to the technology involves slowing information down.
Phosphorus, a highly reactive element commonly found in match heads, tracer bullets and fertilizers, can be turned into a stable crystalline form known as black phosphorus. In a new study, researchers from the Univ. of Minnesota used an ultra-thin black phosphorus film, only 20 layers of atoms, to demonstrate high-speed data communication on nanoscale optical circuits.
Steel is the most important material in vehicle and machinery construction. Large quantities of offcuts and scraps are left over from rolling and milling crude steel into strip steel. New radar from Fraunhofer researchers measures the width of the strip during fabrication to an accuracy of micrometers and helps to minimize scrap.
QR, or quick response, codes have been used to convey information about everything from cereals to cars and new homes. But, Univ. of Connecticut researchers think the codes have a greater potential: protecting national security. Using advanced 3-D optical imaging and extremely low light photon counting encryption the team has taken a QR code and transformed it into a high-end cybersecurity application.
Univ. of Utah engineers have discovered a new approach for designing filters capable of separating different frequencies in the terahertz spectrum, the next generation of communications bandwidth that could allow cellphone users and Internet surfers to download data a thousand times faster than today. Once the filter is designed, it can be fabricated using an off-the-shelf inkjet printer.
A prototype quantum radar that has the potential to detect objects which are invisible to conventional systems has been developed by an international research team led by a quantum information scientist at the Univ. of York. The new breed of radar is a hybrid system that uses quantum correlation between microwave and optical beams to detect objects of low reflectivity, such as cancer cells or aircraft with a stealth capability.
Newly developed tiny antennas, likened to spotlights on the nanoscale, offer the potential to measure food safety, identify pollutants in the air and even quickly diagnose and treat cancer. The new antennas are cubic in shape. They do a better job than previous spherical ones at directing an ultra-narrow beam of light where it is needed, with little or no loss due to heating and scattering.
As urban residents know, air quality is a big deal. When local pollution levels go up, the associated health risks also increase, especially for children and seniors. But air pollution varies widely over the course of a day and by location, even within the same city. Now scientists, reporting in Environmental Science & Technology, have used smartphone and sensing technology to better pinpoint where and when pollution is at its worst.
Smartphones and tablets are everywhere, which is great for communications but a growing burden on wireless channels. Forecasted huge increases in mobile data traffic call for exponentially more channel capacity. Boosting bandwidth and capacity could speed downloads, improve service quality and enable new applications like the Internet of Things connecting a multitude of devices.
Pioneering techniques that use satellites to monitor ocean acidification are set to revolutionize the way that marine biologists and climate scientists study the ocean. This new approach, published in Environmental Science and Technology, offers remote monitoring of large swathes of inaccessible ocean from satellites that orbit the Earth some 700 km above our heads.
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