Articles tagged with Microwave Radiation
Researchers developed a novel method to generate variable low-noise microwaves using an optical microresonator frequency comb and a compact laser. The approach allows for significant frequency tunability and improved phase-noise levels compared to traditional methods.
A research team has discovered a remarkable echo effect in phosphorus atoms on silicon, allowing for the detection of multiple spin echoes. This effect is due to strong coupling between atomic spins and microwave photons, enabling the processing of quantum information.
Tropical Storm Dolphin is moving northward and is expected to weaken gradually before becoming extra-tropical near Tokyo. NASA's Terra satellite captured visible imagery of the storm on September 22, revealing strong storms and thunderstorms in its northeastern quadrant.
Hyeon K. Park, a renowned plasma physicist, has made seminal contributions to fusion plasma diagnostics through his original works in ECEI and MIR. His research enhanced the synergies with numerical modeling and theories, leading to rich discoveries of novel plasma physics phenomena.
The study evaluates the performance of FY-3D's instruments, showing improved data quality and reduced forecast errors by 0.1% on average. The assimilation of FY-3D microwave observations enhances global weather forecasting, climate prediction, and resilience to extreme weather events.
Auralee Edelen's work uses machine learning to streamline particle accelerator operations, while Wai Ling Wu explores mysteries in astrophysics and cosmology. The Panofsky Fellowship provides funding for five years of research.
Researchers designed a silver plating to shield microwave waves and create uniform heating in liquids. This resolves the issue of water heated in a microwave not being the same as stovetop-heated liquid, promoting more consistent temperatures.
Scientists have developed a new method to measure rainfall in Germany using commercial microwave links, achieving high accuracy and temporal resolution. The technique involves analyzing signal attenuation caused by precipitation, with the help of artificial intelligence, and has been successfully tested for application in West Africa.
Scientists at Tokyo Tech develop a novel method to measure local temperature of platinum nanoparticles in catalysts using X-ray absorption fine structure (XAFS) spectroscopy. This approach demonstrates that microwave heating selectively heats the metal nanoparticles, increasing reaction rates and reducing temperatures.
Tropical Storm Gonzalo showed slight disorganization in visible and microwave imagery from NASA's Aqua satellite. The storm is forecast to approach the southern Windward Islands on Friday night and move across them Saturday, with a possibility of becoming a hurricane.
A team of scientists has developed a new parametric oscillator in the optoelectronic domain with unique phase-controlled operation, enabling stable and tuneable multimode oscillation. This allows for applications in microwave signal generation, oscillator-based computation, and radio-frequency phase-stable transfer.
Researchers develop wireless ultrasound transducer that uses microwave absorption to generate sound waves, avoiding acoustic losses. The device consists of a copper ring with an oil-filled envelope, which concentrates microwaves into a hot-spot for efficient ultrasound emission.
A novel 5G-MIMO measurement system is now in place at Ferdinand-Braun-Institut, enabling unique measurements and research. The system's large bandwidth and vector calibration ability make it unparalleled for characterizing integrated multi-amplifier designs.
Researchers at NIST have developed a technology that boosts the stability of microwave signals 100-fold, enabling more accurate time dissemination, navigation, and imaging. The new method uses advanced atomic clocks and frequency combs to transfer optical clock stability to the microwave domain.
Researchers at Duke University have devised a low-cost method for passively locating sources of radio waves, such as Wi-Fi and cellular communication signals. The technique uses metamaterials to create a coded aperture that boosts signal strength and allows for the characterization of radio wave frequencies.
Researchers have demonstrated a prototype device that uses microwave air plasmas for jet propulsion, offering a potentially viable alternative to conventional fossil fuel jet engines. The engine can generate thrusting pressures comparable to those of commercial airplane jet engines using only air and electricity.
Researchers at Penn State are developing microwave plasma technology to produce hydrogen and graphene from natural gas, reducing greenhouse gas emissions. The technology enables rapid heating of gas and can be powered by renewable electricity, making it a promising solution for the hydrogen economy.
A team of researchers from Brown and Rice University has developed a means of performing link discovery with terahertz radiation, enabling ultra-fast wireless data transmission. The approach uses a device called a leaky waveguide to exploit the properties of terahertz waves and track client devices in real-time.
Purdue University researchers developed a technique to turn waste polyethylene terephthalate into battery components using ultrafast microwave irradiation. The technology has shown promising results for lithium-ion and sodium-ion battery cells, offering a low-cost and sustainable solution for renewable energy storage.
A study published in the Journal of Spacecraft and Rockets has helped solve efficiency issues with using high-powered microwaves to supplement chemical fuel for rocket launches. The researchers calculated the efficiencies of various components, finding that variable-focus transmission shows promise for future research.
EPFL researchers have successfully generated high-speed microwave signals using integrated soliton microcombs. The breakthrough enables the miniaturization of photonic systems, paving the way for applications in metrology, spectroscopy, communications, radars, and the Internet of Things.
Entangling disparate electromagnetic fields with a vibrating membrane creates novel ways to solve the long-standing challenge of sharing entanglement between distant quantum computers. The result enables microwave-optical entanglement, a key step towards solving this problem.
Researchers at Los Alamos National Laboratory have developed a flat-panel reflector that can control microwave communications and beam steering electronically. This innovation promises to replace traditional 3-D antennas with compact, versatile, and adaptive designs for various applications.
Researchers have developed a non-invasive system that uses harmless microwaves and artificial intelligence to detect small tumors in minutes. The device costs under $5,000 to build and can detect anomalies as small as 1 cm in diameter, potentially reducing radiation exposure and improving patient comfort.
Researchers pinpoint critical location of magnetic energy release in corona, enabling precise measurements of dynamic local changes. High-cadence EOVSA microwave spectral observations provide quantitative measurements of evolving magnetic field strength and conversion to kinetic, thermal, and superthermal energy.
Researchers at Duke University developed a new method to identify objects using microwaves that improves accuracy while reducing computing time and power requirements. The system uses machine-learning approach to jointly determine optimal hardware settings, cutting out the need for image analysis by humans.
A Stanford team created a silicon chip that accelerates electrons using infrared laser pulses, achieving speeds of up to 94% of the speed of light. This prototype chip is a breakthrough in miniaturizing accelerator technology, making it more accessible for research and medical applications.
A team of researchers from the University of Jyvaskyla and others have studied the out-of-equilibrium dynamical state induced by microwave photon absorption in diffusive Superconductor-Normal metal-Superconductor junctions. Strong anharmonicity of the current-phase relation arises under illumination, driven by non-adiabatic transitions.
Researchers at TU Wien have created a calculation method to determine the perfect wave form for manipulating small particles in complex environments. This allows for precise control over particles without direct physical contact, opening up new possibilities for biological research and applications.
Scientists have developed a compact device that produces terahertz waves by spinning nitrous oxide molecules, offering precise control over wireless communication distances. The technology has the potential to revolutionize applications in radar, spectroscopy, and medical imaging.
Tropical Cyclone Kyarr maintained its eye but became cloud-filled, indicating weakening. The storm's shape and size suggest a gradual weakening process due to environmental conditions.
The JILA team has demonstrated a highly accurate timekeeping signal by combining data from multiple atomic clocks. The system outperforms existing hubs and offers the possibility of providing more accurate time to millions of customers worldwide.
Researchers at DIII-D National Fusion Facility demonstrated a new approach to injecting microwaves into fusion plasma, doubling the efficiency of critical technique. This method uses novel geometry to deliver substantial improvements in plasma current drive, paving the way for more efficient compact fusion power plants.
Researchers developed a millimeter-sized chip that can image through walls or detect tumors using microwave signals. The chip-based imager uses optical processing and includes over 1,000 photonic components.
Researchers developed a highly sensitive nanowire backward diode that can convert low-power microwaves into electricity, exceeding conventional Schottky barrier diodes by over 10 times. This technology has the potential to power sensors in areas where traditional batteries are impractical.
Tropical Storm Lorenzo is strengthening and becoming more organized, with a rounded shape indicating intensification. The storm is moving towards the west-northwest at 16 mph, surrounded by warm waters and humid air, setting conditions ripe for further intensification.
Typhoon Lingling strengthens in the Northwestern Pacific Ocean with powerful thunderstorms circling its 15 nautical-mile wide eye. The Joint Typhoon Warning Center reports that the storm is expected to intensify to 105 knots upon passing between Taiwan and Japan.
Researchers create magnonic crystals using ferromagnetic/superconducting systems, offering potential for compact microdevices and wave electronics. The study demonstrates the feasibility of spin-wave devices in post-silicon era electronics.
Researchers at UBC Okanagan have developed a new sensor that can detect the precise moment when ice begins to form on a surface, using microwave resonators. The device has high sensitivity, low power consumption, and is easy to fabricate, making it ideal for improving airline safety and efficiency.
Spin-torque oscillators, used to generate microwaves, are unstable when connected in series due to random fluctuations that can suppress or destroy the oscillations. The new study suggests alternative methods for robust microwave generation on the macro scale.
Satellite imagery shows Tropical Storm Flossie maintaining its structure with little change from July 31 to August 1. The storm is expected to cross into the central Pacific basin late Friday or early Saturday and begin slowly weakening on Saturday.
Scientists have developed a microchip that simulates particle interactions in a hyperbolic plane, a surface where space curves away from itself at every point. This research may advance understanding of materials relevant to Army goals and help explore questions in other fields, including communication networks.
Tropical Storm Alvin has strengthened into a strong tropical storm just over 500 miles from Mexico's Baja California peninsula. Satellite imagery reveals improved convective structure and organized clouds around the low-level center.
Researchers have successfully prepared a remote quantum state in the microwave regime, enabling secure communication. This breakthrough has the potential to transform the field of quantum cryptography and ultra-accurate quantum metrology.
Physicists at NIST have demonstrated a compact, high-stability chip-scale atomic clock using rubidium atoms and frequency combs. The clock requires minimal power and has the potential to replace traditional oscillators in navigation systems and telecommunications networks.
The research team developed a novel heating technology using a microwave-induced wireless lamp, achieving high-quality crystallization of amorphous silicon films with improved efficiency. The system uses an electrodeless lamp that absorbs microwave energy without electrical wiring, resulting in energy saving and durability.
Tropical Cyclone Kenneth, equivalent to a weak Category 4 storm, made landfall in northern Mozambique on April 25, causing widespread destruction and power outages. The storm's remnants may re-emerge over the Mozambique Channel after weakening over land.
Tropical Cyclone Lorna appears to be consolidating and strengthening with a more circular shape, according to NASA data from the Suomi NPP satellite. The storm is expected to move southeast while reaching hurricane strength, before becoming extra-tropical after three days.
Researchers at Harvard's John A. Paulson School of Engineering and Applied Sciences have successfully transmitted data wirelessly using a semiconductor laser for the first time. The breakthrough enables the creation of ultra-high-speed Wi-Fi, paving the way for faster wireless communication.
Researchers have achieved record-breaking accuracy with an optical clock, setting a new standard for cesium-referenced measurements. The high accuracy of optical clocks could support advances in timing systems used in navigation and communication systems, enabling more precise measurements of physical phenomena not yet fully understood.
A new method for measuring semiconductor material quality has been developed, enabling the characterization of materials at scales much smaller than current technologies. This will accelerate the discovery and investigation of 2D, micro- and nanoscale materials.
Tropical Cyclone Joaninha generated heavy rainfall in the Southern Indian Ocean, with rates exceeding 0.75 inches per hour around its center. The Global Precipitation Measurement mission data used by NASA's IMERG provided a comprehensive analysis of the cyclone's precipitation patterns.
Researchers used CubeSats to study alternative remote sensing technologies, finding they can provide added value in local severe storm forecasting. More CubeSats with increased data coverage yielded larger positive impacts, suggesting a cost-saving approach to mitigating data gaps.
Researchers from Harvard and Stanford have developed an integrated, on-chip frequency comb that is efficient, stable and highly controllable with microwaves. This breakthrough enables the creation of compact light sources for optical communication in data centers, facilitating fast and accurate data exchange.
Tropical Cyclone Idai is moving in a westerly direction after making landfall in Mozambique, affecting provinces of Zambézia, Sofala, Manica, Tete, and Inhambane with moderate to strong rains and severe thunderstorms.
Aalto University scientists have developed a new method to read information from qubits, the basic building blocks of a quantum computer. By applying two microwave pulses instead of one, they were able to complete the readout in 300 nanoseconds, faster than previously possible.
Researchers at Okinawa Institute of Science and Technology (OIST) have demonstrated how microwaves interact with matter, enabling the movement of electrons. This breakthrough may help improve quantum computing by controlling electrons with precision, leading to faster and more powerful technologies.
Researchers at Aalto University have successfully controlled quantum phenomena in a custom-designed electrical circuit called a transmon. They were able to make the transmon jump multiple energy levels in one go, achieving speeds close to the theoretically calculated quantum speed limit.
Scientists at Osaka University have successfully controlled nano-sized magnets by heating, amplifying microwave signals and achieving a higher efficiency than current STT-MRAM technology. This breakthrough reduces power consumption of magnetoresistive random access memory (MRAM) and artificial intelligence (AI) devices.
MIT researchers have developed a new NMR technique that enhances sensitivity, enabling the analysis of complex protein structures in minutes. This breakthrough could provide insights into Alzheimer's and other diseases by studying amyloid beta protein and membrane-bound proteins.