Articles tagged with Radiowaves
Researchers develop a new terahertz radiation technique to study atomic behavior, enabling faster and more accurate measurements of ultrafast processes. The method uses synchronized electron bunches and terahertz pulses to reduce timing jitter, allowing scientists to observe fundamental chemical reactions.
Researchers have developed a retrofit to transform transmission electron microscopes into high-speed cameras, capturing processes on the atomic scale. The 'beam chopper' technology enables laboratories to investigate super-fast phenomena without expensive laser systems or specialized expertise.
Researchers have created an algorithm to simulate electromagnetic wave interactions with materials, reducing simulation time from months to hours. This breakthrough could lead to more efficient and accurate equipment in fields like biology, astronomy, and telecommunications.
Researchers at Southern Methodist University have developed a more efficient algorithm to simulate the interaction of electromagnetic waves with devices, reducing simulation time from days to hours. This breakthrough has significant implications for various scientific fields, including biology, astronomy, and military applications.
Researchers have made the tiniest radio-frequency antennas reported yet, with thicknesses of about 1/100 of a human hair. The new antennas were created using extremely thin sheets of a 2D material and performed well in receiving and transmitting radio waves.
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.
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.
Scientists have successfully generated terahertz waves by applying an electric current to a material with precisely chosen properties. The discovery paves the way for potential applications in data transmission and material penetration.
Physicist Yue Deng is developing a space weather simulator to predict how energy is distributed during solar flares and magnetic storms. The goal is to improve models' accuracy, affecting GPS and communication systems.
Researchers at the University of Vienna successfully implemented a counterfactual communication protocol, where information travels from Bob to Alice while photons travel in the opposite direction. This innovation resolves two major drawbacks of previous implementations and contradicts a crucial premise of communication theory.
Researchers at KAUST have developed a compact radar with short wavelengths to enhance close-range detection capabilities. The device is capable of target detection, speed estimation, and tracking at ranges of up to 12 meters, making it suitable for visually impaired people and unmanned devices.
Researchers at DESY achieved a world record in plasma acceleration using a laser drill, accelerating electrons to an energy of 7.8 billion electron volts. The technique uses a laser pulse to drill through a plasma, confining the beam and enabling the acceleration of particles hundreds of times stronger than conventional accelerators.
Researchers at Tokyo Institute of Technology have developed a miniature 28 GHz transceiver integrating beamforming and dual-polarized MIMO technology. The device achieved a maximum data rate of 15 Gb/s, surpassing previous models by 25 percent.
Researchers created a graphene-based terahertz detector that detects waves, enabling faster Wi-Fi and new medical diagnostic methods. The detector uses plasmons to detect terahertz radiation, overcoming the issue of wave resonance.
The new modulator enables efficient and low-cost high-frequency microwaves transmission, covering the last mile with high data rates, and is compatible with 5G technology and future industry standards.
Researchers at RUDN University simulated a communication system using drones to increase cellular network coverage. The approach, which takes into account random distances and three-dimensional modeling, can significantly improve the quality and reliability of service.
A new study reveals unexpected discoveries about whistler waves, including wave reflections and cylindrical modes. The research provides insights into the nature of whistlers and space plasmas, which could aid in developing plasma technologies for spacecraft thrusters.
Researchers discovered a massive increase in wave power near Jupiter's moons Ganymede and Europa, a million times more intense than average. This phenomenon is attributed to the strong magnetic fields of these moons, which amplify low-frequency radio waves.
Scientists from ITMO University discovered that the Great Pyramid can concentrate electromagnetic energy in its internal chambers and base. The research used numerical modeling and analytical methods to predict this phenomenon, which could lead to the development of nanoparticles for sensors and solar cells.
Researchers at Georgia Institute of Technology have developed a new co-design technique that merges the design of antenna and electronics, resulting in improved modulation and reduced waste heat. The innovation enables longer talk time and higher data rates in millimeter wave wireless communication devices for future 5G applications.
Researchers developed a wireless system to power implants deep within human body, eliminating battery limitations. The technology uses radio waves to supply energy to devices, enabling remote control of medical applications such as drug delivery and sensing.
A new portable device worn like a visor can detect severe stroke in patients with over 90% accuracy, allowing for timely and comprehensive care. This device simplifies the decision-making process for emergency personnel, enabling them to quickly identify patients who require endovascular therapy.
Researchers from the University of Würzburg have developed a new set of rules for creating optical antennas that can precisely control photon creation and emission direction. This breakthrough has the potential to enable tiny, multifunctional light pixels and reliable single-photon sources for quantum computers and optical microscopes.
A study by Embry-Riddle Aeronautical University researchers found that solar radio emissions can degrade 5G network transmissions by up to 15% in hot weather. However, effective communication links are possible at distances of up to 134 meters indoors and 110 meters outdoors, even in hilly urban areas.
The VLA detection and ongoing observations reveal key facts about the event that generated gravitational waves, including the amount of energy released and the environment in which it occurred. Radio waves will continue to provide valuable information for months or even years.
Scientists used a giant cosmic lens to study a star-forming galaxy nearly five billion light-years away, providing clues about the origin of galactic magnetic fields. The analysis revealed a large-scale, coherent magnetic field similar to those in nearby galaxies.
Researchers from an international collaboration have analyzed data from the Venus Express spacecraft to investigate Venus's complex atmosphere. They found that stationary gravity waves at higher altitudes are related to surface elevations, suggesting wind currents caused by topographical obstacles contribute to the planet's superrotation.
A new NASA study using data from the Van Allen Probes spacecraft has discovered that plasmaspheric hiss waves are more complex than previously understood. Low-frequency hiss waves interact with high-energy particles and can efficiently remove them from the radiation belts, protecting satellites.
Researchers at NASA's Goddard Space Flight Center are analyzing the eerie sounds made by plasma waves in space, including whistler-mode waves and chorus waves. By understanding how these waves interact with particles, scientists can improve predictions of space weather and protect satellites and telecommunications signals.
Researchers discovered new details about the Perseus Cluster's mini-halo, a pool of superfast particles emitting radio waves. The study revealed complex mechanisms causing the radio emission, including particle reacceleration and a powerful black hole's energy kick.
Astronomers have produced a highly-detailed image of the Crab Nebula by combining data from telescopes spanning nearly the entire electromagnetic spectrum. The image reveals intricate details about the nebula's structure and interactions with fast-moving particles and magnetic fields.
A team of scientists found a massive wave of hot gas in the Perseus galaxy cluster using Chandra X-ray Observatory data and computer simulations. The wave is thought to have formed billions of years ago after a small galaxy cluster grazed Perseus, causing its gas supply to slosh around an enormous volume.
Researchers have developed a technique to control terahertz waves using graphene, enabling potential applications in telecommunications and medical imaging. This discovery could lead to faster data transfer speeds and improved security in communications, as well as non-invasive detection of biological molecules for medical diagnosis.
Researchers at Princeton University have developed a new terahertz chip technology that can generate and capture intricate details of terahertz waves. The system uses tiny devices inside the microchip to read patterns created by the waves, enabling potential applications in medical imaging, communications, and drug development.
Researchers used brightness and simultaneous detection to pinpoint FRB source, measuring galaxy's magnetic field for better cosmology models. The findings shed light on the origins of powerful radio flashes, offering insights into stellar evolution and the Universe's larger-scale structure.
Researchers have developed tiny graphene radios that can transmit terahertz waves at speeds greater than one terabit per second, paving the way for an Internet of Nano-Things. These radios could enable short-range, high-speed communication and revolutionize industries such as healthcare and agriculture.
The National Science Foundation has awarded $18 million to nine teams of engineering-led researchers to pursue transformative research in new light and acoustic wave propagation. The goal is to disrupt conventional ways of designing electronic, photonic, and acoustic devices and enable new functionalities.
The new Askaryan Radio Array detector is making waves with its ability to penetrate through Antarctic ice and detect high-energy neutrinos. Scientists are optimistic about the potential for this technology to reveal secrets about the universe's origins and evolution.
Researchers have quantified physical limitations on cloaking devices, allowing for calculation of optimal performance before designing a specific cloak. The new framework establishes boundaries on bandwidth capabilities of electromagnetic cloaks for objects of different sizes and composition.
New observations reveal a widespread view of activity below Jupiter's clouds, including hot spots and dry regions devoid of clouds and condensable gases. The detected ammonia plumes swell up in wave patterns, suggesting motion deep within the atmosphere.
Researchers at Disney Research and Carnegie Mellon University have developed a system to debug intermittent systems, such as those that harvest energy from the environment. The Energy-interference-free Debugger (EDB) can monitor and debug these systems without interfering with their power state.
Researchers at University of Texas at Austin discovered a brain mechanism that allows us to play back memories in fast forward, compressing information needed for memory retrieval, imagination, or planning. This finding has implications for research into schizophrenia, autism spectrum disorders, and Alzheimer's disease.
Researchers at Eindhoven University of Technology developed a tiny wireless temperature sensor that measures just 2 square millimeters and weighs 1.6 milligrams. The sensor operates beneath a layer of paint or concrete, consumes extremely low energy, and can be easily incorporated into buildings.
New York University researchers have received a three-year, $2 million grant to investigate new ways to deploy electrons and reconfigure physical properties. The project aims to create improved semiconductors, magnets, insulators, and other materials for faster, more energy-efficient computing devices.
Researchers at UCSB aim to develop large-scale millimeter wave wireless data networks that can operate at gigabit speeds. The new approach focuses on the millimeter wave band, which offers additional real estate on the electromagnetic spectrum and better efficiency due to its smaller coverage area.
A Dartmouth-led study investigates the resonance of relativistic electrons with electromagnetic ion cyclotron waves in the Van Allen radiation belts. The findings reveal that low proton temperature is the primary factor influencing the lower minimum resonant energy, contrary to previous assumptions about high density.
Researchers propose a new technique to detect stars at galactic center by looking for radio waves from supersonic stars. Stars with high speeds can create shock waves, producing radio emission that can be detected.
A study by Dartmouth physicist Robyn Millan and NASA's Van Allen Probes has discovered new X-ray actions caused by solar flares, affecting Earth's atmosphere. The findings provide insight into the processes that can impact our lives directly.
Researchers at Caltech have developed a device called a frequency comb to detect terahertz waves, allowing for precise measurement and identification of molecules in space. The device can measure thousands of frequencies simultaneously, enabling scientists to analyze the chemical fingerprints associated with various molecules.
Researchers have produced a detailed image of a galaxy-cluster collision using the VLA radio telescope, showing a variety of strange features related to the ongoing collision. The 'true color' image reveals details of interactions between merging clusters and suggests unexpected physical processes at work.
Researchers at NIST are developing measurement tools for channels that could offer more than 1,000 times the bandwidth of today's cell phone systems. The tools will enable the development of innovative millimeter-wave wireless technologies and support the expected increases in demand for wireless capacity.
A team of NYU and University of Barcelona physicists developed a method to control spin waves in magnetic materials, which can efficiently transfer energy and information. The breakthrough has the potential to improve information processing and reduce energy consumption.
University of Oregon chemists use special microscope to visualize traps that disrupt energy flow in carbon nanotubes. The study provides a detailed view of internal structures of electronic waves trapped by external electrostatic charges.
The Stanford team developed a wireless pressure sensor that can detect subtle changes in pressure using radio waves. The technology has potential applications in monitoring brain pressure in lab mice and could lead to the creation of 'skin' for prosthetic devices.
Researchers at USC have developed a technique to twist radio beams and transmit data at high speeds of 32 gigabits per second. This method outperforms traditional optical systems and could enable ultra-high-speed links for next-generation cellular systems.
Physicists from UT Arlington believe following a trail of radio wave emissions may lead them to the discovery of an exomoon. They suggest using detailed calculations about the Jupiter/Io dynamic to look for radio emissions that could indicate moons orbiting an exoplanet.
The University of Bristol is set to showcase its innovative millimeter wave communication technology at the Small Cells World Summit in London. The team has developed a system that can transmit data approximately 50 times faster than Wi-Fi, and has successfully demonstrated beamforming and mobile tracking capabilities.
A team of physicists has identified a universal law governing the magnetic properties of metamagnets, which could lead to more efficient refrigerators, heat pumps, and airport scanners. The non-linear property enables cycling of magnetism on and off, allowing for efficient cooling and pumping of heat.
The study proposes enhanced technologies and algorithms to increase data capacity and densification in short-range wireless networks, achieving speeds of up to 7Gbps per link. Beamforming is also explored as a solution for multi-gigabit connections between base stations and users, with an adaptive algorithm reducing interference.
A Tel Aviv University study suggests that cosmic heating occurred later than previously believed, allowing astronomers to detect the earliest black holes by searching for radio waves in space. This finding has significant implications for our understanding of the universe's origins and the history of cosmic expansion.