Articles tagged with Magnetic Fields
Scientists have made a breakthrough in developing environmentally-friendly 'magnetic' refrigeration technology, which could provide a greener alternative to traditional gas-compression fridges and air conditioners. The new materials exhibit dramatic heating and cooling when a magnetic field is applied and removed.
Direct measurement of graphene's energy spectrum reveals unevenly spaced energy levels and a 'zero energy state.' The findings support the idea that graphene layers are uncoupled from adjacent layers due to their unique stacking orientations.
Researchers at NC State University used a mathematical model to get a clearer picture of the galaxy's youngest supernova remnant. The data provides evidence that the remnant is from a type Ia supernova, raising questions about the generation of cosmic ray particles and magnetic field effects.
The analysis reveals highly polarised gamma rays, providing insight into the central engine's magnetic field structure. The team favours a synchrotron model, suggesting that the jet lifted the magnetic field into space.
A NIST research collaboration has solved the internal structure of Galfenol, a compound that changes shape in response to magnetic fields. The team found that adding gallium creates clusters of distorted cells within an otherwise regular crystal lattice, leading to its enhanced magnetostrictive properties.
Scientists at NIST's JQI have successfully created ultracold rubidium atoms that exhibit cyclotron motions identical to charged particles in a magnetic field. This breakthrough has the potential to reveal clues for exotic computing and understanding of the fractional quantum Hall effect.
Researchers at NIST have discovered a material that can reduce magnetic film stress by a factor of 200 and lower saturation field by a factor of 400, enhancing magnetic sensor sensitivity. This breakthrough could lead to improved applications in weapons detection, non-destructive testing, medical devices, and data storage.
A novel alloy composed of manganese, iron, phosphorus and germanium has been found to exhibit exceptional magnetic cooling properties, making it a potential replacement for traditional gas-compression refrigerators.
Astronomers detect frequent X-ray and gamma-ray flares from a soft-gamma-ray repeater, a rare type of neutron star. The object has erupted with over 100 flares in 20 minutes, releasing more energy than the sun does in 20 years.
A laboratory experiment has successfully modeled stellar jets, revealing that magnetic forces shape these objects in a non-linear way. The findings suggest that the jets are fired out like bullets or buckshot, rather than breaking into pieces as previously thought.
Researchers at MIT's Alcator C-Mod fusion reactor have found an efficient way to push the hot plasma around inside the vessel, preventing heat loss and turbulence. This breakthrough could be crucial to the success of future power-generating fusion reactors like ITER.
Researchers have developed a new method to equip miniaturized laboratories with moving parts using magnetic colloidal particles. The technique allows for the creation of complex networks of individual components driven by a single magnetic field.
Researchers from Queen Mary University of London have improved their understanding of how magnetic information is lost in devices similar to hard drive read-heads. The findings, published in Nature Materials, could lead to the development of more efficient and powerful data storage technologies.
The study found that magnetized water exhibits magnetism, a saturation effect, and memory properties. New phenomena, such as irreversible infrared absorption and exponential UV absorption, were also discovered. These findings support the theory of magnetization of water proposed by Professor Pang Xiao-Feng.
Astronomers detected a strong magnetic field in a 6.5 billion-year-old protogalaxy, contradicting the leading theory that magnetic fields should weaken with time. The discovery was made using the National Science Foundation's ultra-sensitive Robert C. Byrd Green Bank Telescope.
Researchers have directly measured a nascent galaxy's magnetic field, finding it is at least 10 times stronger than the average value in the Milky Way. This unexpected result presents a challenge to the leading theory of magnetic field generation and suggests that magnetic fields may play a key role in the evolution of galaxies.
Astronomers have discovered a mysterious celestial object emitting visible-light flashes before disappearing. It is likely to be a missing link in the family of neutron stars, exhibiting powerful magnetic activity.
Researchers at University of Montreal discover that superconductivity can induce magnetism, contrary to previous belief. The experiment shows magnetic order in a material only when it's in the superconducting state.
The Hubble Space Telescope has resolved individual threads of gas in the filaments of galaxy NGC 1275, revealing a magnetic structure that sustains them for over 100 million years. The discovery provides crucial clues about how giant black holes affect their surroundings.
A University of Utah study demonstrates fundamental new property – chaotic behavior in a quantum system – in frozen xenon nuclei, challenging conventional understanding. The findings provide new insights into the relationship between chaos theory and quantum mechanics.
Scientists at Washington University in St. Louis have detailed the interaction between a superfluid and a superconductor, which could change our understanding of neutron stars' motion. The research reveals exotic behavior at the boundary between type I and type II superconductors, with unexpected effects on magnetic fields.
Scientists have identified the mechanism that triggers substorms in space, which wreaks havoc on satellites and power grids, according to UCLA professor Vassilis Angelopoulos. The THEMIS mission provided evidence that magnetic reconnection is the trigger for these spectacular brightening events.
Physicists at Ohio State University have developed a new kind of MRI technique that can image the inside of extremely tiny magnets, enabling potential applications in computer memory and biomedical research. The technique combines three technologies to create high-resolution images of individual magnets.
Recent measurements of the Earth's magnetic field revealed surprisingly fast motions in the fluid at the core, changing over just a few months. This change affects the Planet's magnetic field and is also linked to variations in Length-of-Day.
A University of Michigan instrument on the MESSENGER spacecraft has detected silicon, sodium, sulfur, and water ions around Mercury, suggesting that they were blasted from the surface or exosphere by solar wind. The findings provide a new understanding of Mercury's composition and its interaction with the sun's magnetic field.
Researchers have discovered that magnetic domains in type-I superconducting lead exhibit patterns similar to everyday froths like soap foam or frothed milk. The team found that suprafroths, a new kind of froth system created by applying a magnetic field, adhere to statistical laws governing the behavior of froths.
Astronomers have detected a giant ring around a rare and exotic star known as a magnetar, which was likely produced by a massive flare. The discovery provides valuable insights into the phenomenon associated with magnetars, a type of neutron star with incredibly strong magnetic fields.
Paul Morrow's innovations could improve magnetic data storage and sense extremely low-level magnetic fields in various applications. He developed a three-dimensional nanomaterial with promising magnetic properties, increasing data storage capability and spatial sensitivity.
New scientific evidence suggests that iron snow forms and falls toward the center of Mercury's core, powering its weak magnetic field. This process could be responsible for the planet's mysterious magnetic field, which is about 100 times weaker than Earth's.
A research team from Arizona State University and the University of Oxford has synthesized a molecule that is sensitive to both the magnitude and direction of magnetic fields as weak as the Earth's. This discovery provides evidence for chemical magnetoreception, a mechanism that birds may use to navigate.
Scientists have detected polarized glow in Northern Lights, revealing clues to the composition of Earth's upper atmosphere and magnetic field configuration. The phenomenon also offers a way to determine magnetic field configurations on other planets.
Researchers have recorded the quantum Hall effect in a bulk crystal of bismuth-antimony without an external magnetic field, shedding light on unusual electron behavior. This breakthrough could lead to advances in fast quantum computing devices and new electronic technologies.
Astronomers used VLBA to watch material winding a corkscrew path and confirm twisted magnetic fields accelerate particles. The team observed BL Lac, a blazar, with unprecedented view of the innermost portion of its jet.
Scientists at HMI and University of Applied Sciences in Berlin have successfully visualized three-dimensional images of magnetic fields inside solid, non-transparent materials. By detecting changes in neutron spin rotation, the researchers can reconstruct a three-dimensional image of the magnetic field distribution within the sample.
A new discovery at Jupiter could help protect Earth-orbiting satellites by understanding how electrons are accelerated within the planet's magnetic field. The research found that very low frequency radio waves can accelerate electrons up to high energies inside Jupiter's magnetic field, similar to the way they do on Earth.
Scientists at University of Warwick argue that Alfvén waves, thought to superheat the Corona, are actually kink waves, a bending of the magnetic field. This reinterpretation throws doubt on previous research and leaves the question of the Corona's extreme heat unresolved.
The combined scanner uses a new technology to eliminate interference between MRI and PET systems, enabling simultaneous acquisition of structural and functional information. This innovation allows researchers to correlate tumor structure with functional information, providing deeper insights into cancer research.
The Mars Express and Venus Express spacecraft reveal that the two planets' atmospheres are stripped away into space due to solar wind interactions. The similarity in magnetic field structure between the two planets suggests a shared ionosphere density at high altitudes.
Astronomers have found a clue to the evolutionary relationship between pulsars and magnetars by examining archival RXTE data of a young neutron star. The study reveals that a regular pulsar can produce powerful bursts similar to those from magnetars, challenging current understanding of their life cycles.
A research team led by Andrea D. Bianchi discovered a way to control superconductivity in a material by applying a magnetic field, leading to a better understanding of the phenomenon and potential applications in energy storage and transmission.
Researchers at UVA discovered that applying a moderate static magnetic field after an inflammatory injury can significantly reduce swelling. The study suggests that magnets could be used as an alternative to ice packs and compression for everyday sprains and bruises, with potential benefits for worker productivity and quality of life.
A team of astronomers, led by Dr. Edo Berger, have observed a surprisingly active magnetic field on the ultracool low-mass star TVLM513-46546, challenging the theory that cooler stars are simple and quiet. The star's complex magnetic field environment may indicate unusual activity beneath its surface or possibly even an unseen companion.
The University of Illinois Chicago's 9.4 Tesla MRI successfully completed safety trials, allowing for the visualization of biological processes in the human brain. This technology has the potential to tailor radiation therapy based on a brain tumor's real-time response to treatment.
Researchers at Purdue and Duke universities developed a technique using a magnetic field to selectively separate tiny magnetic particles, representing a highly sensitive method for diagnosing diseases. The new system can diagnose multiple pathogens in a single sample with high accuracy.
Researchers developed a magnetic separation technique that can sort beads hundreds of times smaller than the period at the end of a sentence. This method, called magnetophoresis, uses a rotating magnetic field and microchip to separate tiny magnetic beads based on size within minutes.
The Sunrise project successfully launched a solar telescope to an altitude of 120,000 feet, enabling scientists to view features of the Sun that were previously unseen. The telescope will capture stable images in the ultraviolet range, allowing for higher resolution than can be obtained from Earth's surface.
Researchers at the University of Bonn have discovered right-handed and left-handed magnetic vortices, which could be used to store information in hard disks. The discovery has potential practical applications, but the primary interest is in understanding the underlying principles of magnetism.
Recent observations from NASA and Japanese X-ray observatories have helped clarify the origin of cosmic rays. The study, published in Nature, suggests that magnetic fields in supernova remnants are stronger than previously thought, enabling them to accelerate charged particles to enormous energies.
Researchers from The University of Texas at Austin create an 'atomic coilgun' that slows and stops a wide range of atoms using pulsed magnetic fields. This breakthrough enables the study of previously inaccessible elements like hydrogen, with implications for atomic and nuclear physics.
Researchers have created magnetic snakes that can control the flow of surrounding fluids, create gravity-defying droplets, and uncover the secrets of a dragonfly's flight mechanics. By manipulating magnetic fields, the snakes can create waves on the surface of water and form segmented patterns.
Scientists have made a breakthrough in writing and storing information on electronic devices by eliminating false writes, which can affect the accuracy of computer memory. The new method uses high-resolution scanning tunneling microscopes to resolve structures at an atomic level.
Scientists have found a third type of substorm onset using data from ESA's Cluster satellites and CNSA's Double Star mission. This discovery challenges existing theories about magnetic substorms and their effects on the aurora and GPS signals.
Researchers have observed elusive oscillations in the Sun's corona, known as Alfvén waves, that transport energy outward from the surface of the Sun. These discoveries can help unlock secrets of the corona's heat and solar storms, and improve our understanding of how the Sun affects Earth.
Researchers have developed a new test that can diagnose common brain diseases like Alzheimer's and schizophrenia with high accuracy. By analyzing tiny magnetic fields produced by neuron activity, the test can identify patterns associated with these debilitating diseases.
University of Arizona physicists have discovered 'super crystals' in certain organic semiconducting solids, which could create splashes of current and exhibit unique electrical properties. This discovery was made possible by analyzing experimental data from a previous study on a mysterious solid-state phase in a semiconductor.
The study identifies dominant damping mechanisms in iron, cobalt, and nickel, pointing to improved material design techniques. This discovery enhances the prediction of magnetic materials' dynamics, crucial for high-performance electronic devices.
Physicists have discovered that correcting a typo in an e-mail requires dozens of bits of information, each forcing its polarity to align up or down. The researchers found that the spin precession effect, where magnetic fields exert forces on neighboring spins, can lead to avalanches if not properly damped.
Researchers at Ames Laboratory have observed two-dimensional equilibrium patterns in lead samples when in its superconducting state, below 7.2 Kelvin. These complex patterns differ from the long-held textbook model proposed by Lev Landau and represent a significant contribution to the field of superconductivity.
A team of Johns Hopkins undergraduates has invented a handheld metal detector to aid in the removal of orthopedic screws from patients' bodies. The device emits a tone that rises in pitch as the surgeon moves closer to the screw, guiding them to hidden hardware.
Researchers at MIT have successfully demonstrated wireless power transfer using coupled resonant objects, enabling the charging of devices without physical connections. The team's 'WiTricity' concept uses magnetic fields to transfer energy efficiently, promising a future free from bulky batteries and power cords.