Articles tagged with Microwave Radiation
NASA's TRMM satellite detected rising rainfall rates on February 27, indicating the birth of Tropical Storm Faxai. The storm formed over System 93W in the Northwestern Pacific, with maximum sustained winds near 35 knots.
Scientists from Moscow State University have made significant breakthroughs in generating stable femtosecond pulses and microwave signals using microresonators. These discoveries hold promise for compact and affordable optical pulse generators, critical for applications such as broadband spectroscopy, telecommunications, and astronomy.
Researchers at Duke University designed a power-harvesting device that efficiently captures microwave signals and converts them into electrical current. The device has an energy conversion rate of 37%, comparable to solar cells.
The team uses a powerful magnet and supercooled microwave receiver to detect faint interactions between axions and electromagnetic radiation. They aim to find cold dark matter axions in the Milky Way galaxy, which could make up 1/4 of the universe's mass.
Tropical Storm Krosa is intensifying as it approaches the northern Philippines, prompting warnings from PAGASA. The storm is expected to make a brief landfall over extreme northern Luzon on Oct. 31 before moving west into the South China Sea.
Physicists at NIST have successfully entangled a microscopic mechanical drum with electrical signals, confirming its potential as a quantum memory in future quantum computers. The experiment also marks the first-ever entanglement of a macroscopic oscillator, opening up new practical uses for the drum.
The HIRAD instrument aboard NASA Global Hawk 871 detected an area of heavy rains and likely strong winds in Hurricane Ingrid. The storm made landfall in northeastern Mexico on Monday, September 16, with maximum sustained winds near 75 mph.
Scientists have successfully controlled a cloud of 40,000 rubidium atoms to maintain them in a non-equilibrium state analogous to the inverted pendulum. By applying bursts of microwave radiation, they stabilized the system's internal spins and prevented it from evolving towards stability.
Gentemann is recognized for her contributions to the quality of life, economic opportunities, and stewardship of the planet through Earth science information. Her research focuses on extracting geophysical variables from measurements of imaging microwave radiometers on earth observation satellites.
NASA's TRMM and Aqua satellites observed Tropical Storm Gil intensifying into a hurricane, with the storm being pursued by another developing system. The satellite imagery revealed that the cloud pattern of Gil was not as organized as initially thought, with some areas showing less intense storms.
NASA's HS3 mission will investigate tropical cyclones using a new dual-frequency conical-scanning Doppler radar called HIWRAP. The instrument measures wind and rain in hurricanes, providing critical data sets needed for improved understanding and forecasting.
The heaviest rainfall was observed at a rate of 1.2 inches per hour north of the storm's center, with most remaining rainfall being light to moderate. The storm is moving west-northwest towards Hawaii, prompting residents to monitor its approach.
Tropical Storm Cimaron made landfall in southeastern China, with the strongest storms located east of the center. The storm's cloud top temperatures were near -63F/-52C, and its maximum sustained winds dropped to 35 knots (40 mph) on July 17.
The new radiometer will globally map soil moisture levels, a crucial gauge for drought monitoring and prediction. It will also help scientists understand the water cycle and crack an unsolved climate mystery: the location of carbon dioxide stores.
Harvard physicists develop a novel technique to detect molecular variants in chemical mixtures, relying on microwave fields to identify left- and right-handed compounds. The method can analyze complex mixtures and determine the ratio of variants, with potential applications in pharmaceutical development.
Researchers at ETH Zurich successfully demonstrate the Hong-Ou-Mandel effect using microwave photons, showcasing a fundamental aspect of quantum mechanics. The experiment offers new possibilities for characterizing radiation sources and may lead to practical applications in quantum communication and information processing.
Using 3D printing, researchers have created a simple and inexpensive way to produce plastic cloaks that can deflect microwave beams, making them appear invisible. The technique involves designing algorithms to create holes in the cloak, which allows it to suppress scattering from objects, effectively making them invisible.
Researchers used a microwave oven to produce a nanocrystal semiconductor for more efficient photovoltaic solar cells and LED lights, biological sensors, and systems to convert waste heat to electricity. The method produces the material quickly and uses less toxic metals than other semiconductors.
New research reveals microwave tomography can effectively monitor breast cancer treatment, identifying shrinking tumors and guiding timely treatment changes. This non-invasive imaging technique is low-cost, easy to repeat, and unaffected by factors like body mass index or age.
Researchers at ETH Zurich have developed a new control method for quantum systems, enabling precise steering through Hilbert spaces. This breakthrough has significant implications for the development of practical quantum computers.
A £670,000 project led by Professor Ian Glover aims to transform fault detection techniques, predicting and diagnosing imminent system failures. The technology enables quicker diagnosis, reducing maintenance needs and associated costs.
Scientists have created a metascreen cloak that can hide objects from microwaves, providing optimal functionality at specific frequencies and bandwidths. The researchers predict the technique's conformability and robustness will enable cloaking of oddly shaped objects.
The Planck space mission has released its most accurate map of the oldest light in the universe, revealing a slower expansion rate and less dark energy. The new data also provide insights into dark matter and normal matter contents, challenging current models.
Researchers at NIST developed a new microscope that measures collective dynamics of electrons' spins in individual nanomagnets as small as 100 nanometers. This enables the study of spin relaxation process and can help design spintronic devices with reduced energy consumption.
Researchers at NIST have successfully demonstrated the use of a mechanical micro-drum as a quantum memory, storing and retrieving information with 65% efficiency. This innovation exploits a mechanical form of quantum physics and has potential applications in quantum computing and precise force sensing.
Cyclone Felleng is squeezing between Madagascar and La Reunion as it moves southward in the Mozambique Channel. The storm is expected to weaken as it continues its southeasterly direction.
Researchers at UT Austin create a novel process to grow ceramic thin films onto plastic substrates using microwaves, reducing growth temperature from over 450°C to under 150°C. The method enables controlled film growth in a single step, with potential applications in developing thin-film batteries and solar cells.
Researchers have successfully hybridized electronic and nuclear spin qubits using bismuth, enabling easier control over these complex systems. This breakthrough brings us closer to creating practical quantum computing capable of solving complex problems.
The NASA HS3 mission has ended its 2012 campaign with a final data-collection flight in the North Pacific Ocean. The Global Hawk aircraft tested three new hurricane-tracking instruments: HIWRAP, HIRAD, and HAMSR, which will be used in next year's campaign to study hurricanes and severe storms.
Researchers developed a large dynamic, reconfigurable, distributed I-ROF system to meet the growing demand for broadband and ubiquitous information access. The system offers flexible wireless access and fiber-optic broadband transmission, providing effective solutions for modern information society.
Researchers at Princeton University have made a breakthrough in creating a working quantum computer by developing a method to quickly and reliably transfer quantum information. This achievement enables the creation of larger systems with millions of qubits, solving problems that cannot be solved with conventional computers.
Typhoon Prapiroon slowed down and became quasi-stationary in the Philippine Sea, displaying a small ragged eye. The storm is expected to slowly re-curve around the western extent of the subtropical ridge, taking on a northeastward track over the next three days.
Typhoon Prapiroon is making a U-turn in the Philippine Sea due to strong high pressure ridge south of Japan. The storm will intensify over low wind shear and warm waters.
NASA's TRMM satellite captured the heaviest rainfall east of Tropical Storm Maliski's center, falling at rates up to 2 inches per hour. The storm has become less organized and is expected to strengthen before passing Iwo To.
NASA's TRMM satellite observed intense rain falling at 3 inches per hour around Super Typhoon Sanba, with powerful hot towering thunderstorms near its center. The storm is expected to make landfall on South Korea's south coast on September 17.
Research using satellite data found convective precipitation is more common over dry regions, suggesting a different mechanism than previously thought. The study's findings challenge existing computer models and highlight the need for further research to understand this phenomenon.
NASA satellites captured stunning visible and infrared images of Hurricane Michael's eye, revealing clear views of the Atlantic Ocean. The storm's cloud top temperatures cooled around its center on September 7.
Engineers at Oregon State University have developed a method to use microwave heating to synthesize copper zinc tin sulfide, a promising solar cell compound. This approach saves money, works well, and can be scaled up easily compared to traditional methods.
Researchers have developed a solid-state MASER capable of operating at room temperature, eliminating the need for extreme conditions. This breakthrough has significant implications for various fields, including medicine, where it could be used to create more sensitive medical instruments.
Sparse microwave imaging combines sparse signal processing theory with microwave imaging to improve resolution and reduce system complexity. The new concept enables faster calculation of large-scale scenes, making it suitable for wide mapping swath applications.
A new study finds that diacetyl intensifies the damaging effects of abnormal brain protein linked to Alzheimer's disease. Chronic exposure to diacetyl has also been shown to enhance beta-amyloid toxicity on nerve cells, raising concerns over long-term neurological toxicity.
Tropical Storm Daniel, once a hurricane, is weakening due to moving over cooler waters in the Pacific Ocean. NASA's TRMM satellite data shows light to moderate rainfall with average Sea Surface Temperatures of around 24-25 C.
A UCLA research team created the world's most powerful nanoscale microwave oscillators, which could lead to cheaper and more energy-efficient mobile communication devices. The new oscillators use electron spin instead of charge, offering significant advantages over current silicon-based oscillators.
Researchers have developed a sustainable method to convert orange peels into valuable chemicals and materials, including fragrances, water purification, and biofuels. This innovation has the potential to reduce greenhouse gas emissions and create a zero-waste biorefinery.
Researchers searched for 'knots' in space using WMAP data, finding no signs of cosmic textures. The study places limits on theories producing textures, ruling out most models at 95% confidence.
A recent study found that 54% of microwaves in the UK are disposed of for cosmetic reasons or minor faults, and 85% can be safely repaired. Simple design changes could prevent these issues altogether, reducing waste and conserving resources.
Researchers analyze Hinode and SOHO data to show the north pole's magnetic field is weakening faster than predicted, while the south pole's polarity remains unchanged. The findings suggest an imminent solar maximum, potentially occurring before 2013, with significant implications for solar activity and space weather forecasts.
Researchers from NIST, University of Maryland and Royal Institute of Technology create method to detect defects in magnetic structures as small as a tenth of a micrometer. The technique uses spin waves to nondestructively measure the properties of magnetic materials and search for nanoscale defects.
Astronomers have detected a cosmic effect that could provide insight into the forces behind the universe's formation, including dark energy and dark matter. The kSZ effect was seen in the movement of distant galaxy clusters, with velocities measured up to 600 kilometers per second.
Infrared NASA satellite data indicates a large upper-level storm system approaching the south central US, bringing a threat of heavy rain, gusty winds, and tornadoes to Oklahoma, Kansas, and Texas. Forecasters expect 4-8 inch rainfall totals through Wednesday, with possible moderate and major river flooding.
Researchers at UBC-TRIUMF have successfully manipulated anti-hydrogen atoms using microwaves, providing the world's first glimpse of an 'anti-atomic fingerprint.' This achievement marks a significant milestone in the study of antimatter and brings scientists closer to understanding its intrinsic properties.
Tropical Storm Irina is showing signs of weakening due to the presence of dry air and cool sea surface temperatures. The storm's cloud top temperatures indicate a significant reduction in strength compared to its previous state, with the southern quadrant experiencing colder temperatures.
Researchers at CERN have successfully manipulated antihydrogen atoms using microwaves, providing the world's first glimpse of an 'anti-atomic fingerprint.' This achievement demonstrates the feasibility of applying microwave spectroscopy to study antimatter atoms.
Scientists have probed the internal structure of antihydrogen atoms using microwave radiation, providing insight into their behavior. The results show that specific frequencies cause the spins to flip, ejecting the atoms from the trap and confirming a key aspect of antihydrogen's properties.
The GPM mission, a joint effort between NASA and JAXA, aims to improve climate, weather, and hydrological predictions by providing accurate precipitation measurements from space. The GMI instrument will play a crucial role in measuring precipitation and environmental forecasting, particularly during extreme weather events.
Researchers at Rensselaer Polytechnic Institute developed a new method for creating advanced nanomaterials that can convert electricity into different temperatures. The new thermoelectric materials exhibit superior properties and can be produced quickly, easily, and cheaply in large batches using microwave ovens.
Tropical Storm Washi's rainfall analysis revealed widespread heavy rain throughout the entire storm. The storm showed improved organization and thunderstorms spiraling into its center, with feeder bands converging near Mindanao.
Physicists at Aalto University have developed a method to amplify feeble radio waves or microwaves with minimal disturbance, reaching the fundamental limit set by quantum physics. The discovery uses a nanomechanical oscillator and superconducting cavity resonator to detect and amplify electromagnetic signals.
Scientists quantify differences between microwave-induced and conventional heating in liquid glycerol samples, finding increased mobility and reactivity at low frequencies. The type of heating used has a limited impact on molecular mobility and reactivity at high temperatures.
Researchers used a new microwave instrument to study the interplay between plasma turbulence and surface flows in tokamak plasas. They found that turbulent eddies are shredded by large surface flows, turning off turbulence. This equilibrium is crucial for achieving high thermal insulation in fusion experiments.