Popular Broadband News and Current Events

Popular Broadband News and Current Events, Broadband News Articles.
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Rethinking the role of technology in the classroom
Introducing tablets and laptops to the classroom has certain educational virtues, according to Annahita Ball, an assistant professor in the University at Buffalo School of Social Work, but her research suggests that tech has its limitations as well. ''You can't simply throw technology at kids and expect positive outcomes,'' says Ball, an expert in educational justice and school social work whose new study shows a decrease in academic motivation for students who participated in a technology-based intervention. (2019-10-22)

5G set to revolutionize communications and to transform industry
The new generation of 5G mobile networks is the future of the Information and Communication Technologies (ICT) sector -- a true technological revolution that will deliver the Internet of Things and is being driven by R&D+i initiatives like '5TONIC,' Spain's leading 5G innovation laboratory. (2017-12-07)

A shoe-box-sized chemical detector
A chemical sensor prototype developed at the University of Michigan will be able to detect 'single-fingerprint quantities' of substances from a distance of more than 100 feet away, and its developers are working to shrink it to the size of a shoebox. (2017-12-15)

Columbia engineers invent breakthrough millimeter-wave circulator IC
Researchers at Columbia Engineering and UT-Austin continue to break new ground in developing magnet-free non-reciprocal components in modern semiconductor processes. They have built the first magnet-free non-reciprocal circulator on a silicon chip that operates at millimeter-wave frequencies, enabling circulators to be built in conventional semiconductor chips and operate at millimeter-wave frequencies, enabling full-duplex or two-way wireless. (2017-10-06)

Attosecond physics: A keen sense for molecules
Munich based Laser physicists have developed an extremely powerful broadband infrared light source. This light source opens up a whole new range of opportunities in medicine, life science, and material analysis. (2018-02-23)

Forging a quantum leap in quantum communication
The major drawback of quantum communication today is the slow speed of data transfer, which is limited by the speed at which the parties can perform quantum measurements. Researchers at Bar-Ilan University have devised a method that overcomes this (2018-02-09)

Asymmetric sound absorption lets in the light
Many asymmetric absorbers are currently based on a single-port system, where sound enters one side and is absorbed before a rigid wall. In this design, however, light and air are unable to pass through the system. But new research shows that asymmetric absorption can be realized within a straight transparent waveguide. The waveguide allows light transmission and air flow through the absorber, and is described this week in Applied Physics Letters. (2017-10-06)

Optical distance measurement at record-high speed
Scientists of Karlsruhe Institute of Technology (KIT) and École polytechnique fédérale de Lausanne (EPFL) have demonstrated the fastest distance measurement so far. The researchers demonstrated on-the-fly sampling of a gun bullet profile with micrometer accuracy. The experiment relied on a soliton frequency comb generated in a chip-based optical microresonator made from silicon nitride. Potential applications comprise real-time 3D cameras based on highly precise and compact LIDAR systems. DOI: 10.1126/science.aao3924 (2018-02-26)

Seeing through walls of unknown materials
Researchers at Duke University have devised a way to see through walls without any advance knowledge of what the walls are made out of. Besides having obvious applications in the realm of security, the approach could lead to inexpensive devices to help construction workers easily locate conduits, pipes and wires. (2017-12-06)

Computational study sheds doubt on latest theory of birds' mysterious magnetic compass
The European robin and other birds know where to migrate by sensing the direction of the Earth's magnetic field. Researchers have recently attributed this ability to a chemical reaction that takes place within the eye and whose success depends on the field direction. However, researchers report in Biophysical Journal that the current form of this 'radical-pair mechanism' is not sensitive enough to explain the disruption of the avian magnetic compass by certain radiofrequency magnetic fields. (2017-10-03)

NRL brightens perspective of mysterious mini-halos
The US Naval Research Laboratory (NRL), working in conjunction with the National Radio Astronomy Observatory (NRAO), employs the upgraded Karl G. Jansky Very Large Array (JVLA) to 'peer' into the cluster of galaxies in the constellation Perseus, 250 million light-years from Earth. (2017-08-03)

Scientists realize breakthrough in controlling the transmission of light
In the cover-story paper published in today's Nature Electronics, researchers at the Advanced Science Research Center (ASRC) at the Graduate Center of the City University of New York (CUNY) and at the University of Texas at Austin detail the development of a new light wave-isolation method. (2018-02-08)

High-speed quantum memory for photons
Physicists from the University of Basel have developed a memory that can store photons. These quantum particles travel at the speed of light and are thus suitable for high-speed data transfer. The researchers were able to store them in an atomic vapor and read them out again later without altering their quantum mechanical properties too much. This memory technology is simple and fast and it could find application in a future quantum Internet. The journal Physical Review Letters has published the results. (2017-09-08)

Inverse-design approach leads to metadevices
A Northwestern University research team used inverse design principles and a 3-D printer to create highly efficient broadband metadevices at millimeter-wave frequencies that could prove revolutionary for consumer products, defense, and telecommunications. (2018-01-22)

Attosecond physics: Molecules brilliantly illuminated
A new high-power laser system generates ultrashort pulses of light covering a large share of the mid-infrared spectrum. (2018-04-23)

Power surge: ONR, energy efficiency in the spotlight
A scientist sponsored by the Office of Naval Research has been named to the National Academy of Inventors for groundbreaking work in energy efficiency using gallium nitride -- with resulting improvements in everything from warfighter communications to hybrid cars. (2016-02-19)

How bright is the moon, really?
The National Institute of Standards and Technology (NIST) is planning to take new measurements of the Moon's brightness, a highly useful property that satellites rely upon every day. (2017-10-17)

Tiny poisonous Brazilian frogs are 'deaf' to their own call
Tiny Brazilian frogs still 'sing' despite not being able to hear themselves -- this is the surprising discovery of new scientific research. (2017-10-03)

Advance in light filtering technology has implications for LCD screens, lasers and beyond
Vector polarizers are a light filtering technology hidden behind the operation of many optical systems. They can be found, for instance, in sunglasses, LCD screens, microscopes, microprocessors, laser machining and more. Optical physicists published details of their new vector polarizer design this week in APL Photonics. The newly proposed design is a major advance in polarization technology because it enables flexible filtering of a wide range of light sources and generation of new light states. (2017-12-13)

New technology to dramatically speed up home broadband
Slow internet speeds and the Internet 'rush hour' -- the peak time when data speeds drop by up to 30 percent -- could be history with new hardware designed and demonstrated by UCL researchers that provides consistently high-speed broadband connectivity. (2017-10-19)

On-chip optical filter processes wide range of light wavelengths
MIT researchers have designed an optical filter on a chip that can process optical signals from across an extremely wide spectrum of light at once, something never before available to integrated optics systems that process data using light. The technology may offer greater precision and flexibility for designing optical communication and sensor systems, studying photons and other particles through ultrafast techniques, and in other applications. (2018-08-01)

Prototype of most advanced quantum memory presented by two Kazan universities
In this paper we experimentally demonstrated a broadband scheme of the multiresonator quantum memory-interface. The microwave photonic scheme consists of the system of mini-resonators strongly interacting with a common broadband resonator coupled with the external waveguide. We have implemented the impedance matched quantum storage in this scheme via controllable tuning of the mini-resonator frequencies and coupling of the common resonator with the external waveguide. (2018-04-11)

New record achieved in terahertz pulse generation
A group of scientists from TU Wien and ETH Zurich have succeeded in their attempts to generate ultrashort terahertz light pulses. With lengths of just a few picoseconds, these pulses are ideally suited to spectroscopic applications and enable extremely precise frequency measurements to be taken (2017-02-13)

Study explores options that optimize profit in broadband satellite constellations
Several large telecommunications companies have proposed plans to provide global broadband services by launching hundreds and even thousands of satellites into orbit. Although broadband for everyone sounds like a great idea, it also carries great financial risk, resulting in bankruptcy for some who've tried it. Recent research at the University of Illinois suggests a more cost-effective strategy using regional coverage and staged deployment. (2018-06-06)

Mapmaking for the masses
Sites such as Wikimapia and OpenStreetMap are empowering citizens to create a global patchwork of geographic information. According to Michael Goodchild from the University of California in Santa Barbara, 'volunteered geographic information' has the potential to be a significant source of geographers' understanding of the surface of the Earth. His review has just been published online in Springer's GeoJournal. (2007-12-03)

This week from AGU: New atmos. ripples, Antarctic ice shelf melt, Cold drones, & 4 papers
This Week From AGU: New atmospheric ripples, Antarctic ice shelf melt, Drones in the cold, and 4 new research papers. (2016-01-20)

Monitoring the tremble -- and potential fall -- of natural rock arches
Scientists monitoring the vibrations of natural rock arches have found that the resonant frequencies of arches undergo dynamic changes from day to day, according to research presented at the 2018 SSA Annual Meeting. (2018-05-15)

Broadband internet causes sleep deprivation, a new study finds
Individuals with DSL access tend to sleep 25 minutes less than their counterparts without DSL Internet. They are significantly less likely to sleep between 7 and 9 hours, the amount recommended by the scientific community, and are less likely to be satisfied with their sleep, Bocconi University's Francesco Billari and colleagues find. The effect is largely driven by individuals that face time constraints in the morning and by the use of electronic devices in the evening (not by their use throughout the day) (2018-08-02)

First chip-scale broadband optical system that can sense molecules in the mid-IR
Researchers at Columbia Engineering have demonstrated, for the first time, a chip-based dual-comb spectrometer in the mid-infrared range, that requires no moving parts and can acquire spectra in less than 2 microseconds. The system, which consists of two mutually coherent, low-noise, microresonator-based frequency combs spanning 2600 nm to 4100 nm, could lead to the development of a spectroscopy lab-on-a-chip for real-time sensing on the nanosecond time scale. (2018-05-23)

New technology to allow 100-times-faster internet
This world-first nanophotonic device, unveiled in Nature Communications, encodes more data and processes it much faster than conventional fiber optics by using a special form of 'twisted' light. (2018-10-24)

Wing structure vital in producing a range of tones in bush-cricket mating calls
The structure of the sound generators in the wings of male bush-crickets is critical for producing tonality within the long-range mating calls that attract distant females, a major new study has shown. (2017-12-05)

It's not an illusion: Transforming infrared into visible light
Researchers have developed a compound that can transform near-infrared light into broadband white-light, offering a cheap, efficient means to produce visible light. (2016-06-09)

Space Agency investigates novel analog self-steered antennas
Bulky present generation satellite dishes and ground terminals could become relics of the past thanks to research currently being conducted for the European Space Agency by Queen's University Belfast's Institute of Electronics, Communications and Information Technology aimed at developing discrete self-aligning flat antennas. (2011-01-31)

Graphene based terahertz absorbers
Graphene Flagship researches create a terahertz saturable absorber using printable graphene inks with an order of magnitude higher absorption modulation than other devices produced to date. (2017-09-12)

More children for the high educated: Broadband Internet creates a digital fertility divide
Access to broadband Internet has a positive effect on fertility, overall life satisfaction and time spent with children. Since this effect is largely driven by higher-educated women, though, it risks to create another digital divide, according to a study by Francesco Billari and Luca Stella (Bocconi University), with Osea Giuntella (University of Pittsburgh), just published in Population Studies. (2019-04-02)

Using optical chaos to control the momentum of light
Controlling and moving light poses serious challenges. One major hurdle is that light travels at different speeds and in different phases in different components of an integrated circuit. For light to couple between optical components, it needs to be moving at the same momentum. Now, a team of researchers has demonstrated a new way to control the momentum of broadband light in a widely-used optical component known as a whispering gallery microcavity (WGM). (2017-10-19)

Physicists create new, simpler-than-ever quantum 'hard drive for light'
Physicists at the University of Alberta in Canada have developed a new way to build quantum memories, a method for storing delicate quantum information encoded into pulses of light. (2018-11-05)

When AI and optoelectronics meet: Researchers take control of light properties
Researchers from INRS and the University of Sussex customize the properties of broadband light sources using an AI algorithm and a photonic chip. (2018-11-20)

Acoustic cloaking device hides objects from sound
Duke engineers have demonstrated the world's first three-dimensional acoustic cloak. The new device reroutes sound waves to create the impression that the cloak and anything beneath it are not there. The phenomenon works in all three dimensions, no matter which direction the sound is coming from or where the observer is located, and holds potential for future applications such as sonar avoidance and architectural acoustics. (2014-03-11)

A more complete picture of the nano world
Aerosol particles, says Xiaoji Xu, assistant professor of chemistry at Lehigh University, are among the many materials whose chemical and mechanical properties cannot be fully measured until scientists develop a better method of studying materials at the microscale as well as the much smaller nanoscale (1 nm is one-billionth of a meter). Xu has developed such a method and utilized it to perform noninvasive chemical imaging of a variety of materials, as well as mechanical mapping with a spatial resolution of 10 nanometers. (2017-08-23)

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