Articles tagged with Magnetic Fields
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Researchers at Brown University have discovered an exotic superconducting state that can arise when a superconductor is exposed to a strong magnetic field. The team found that unpaired, spin-up electrons form Andreev bound states, enabling transport of supercurrents through non-superconducting regions.
Researchers at Bielefeld University and colleagues successfully cooled to minus 272.15 degrees Celsius using magnetic molecules, surpassing absolute zero. The discovery could provide an alternative to helium-based refrigerants and has implications for various applications such as transparent magnets and nano data memoires.
Researchers from around the world have successfully explained the formation and propagation of stellar jets emitted by young stars. The team used a patented experimental device and numerical simulations to demonstrate that interstellar magnetic fields play a key role in confining these jets, which can travel vast distances.
Researchers at Helmholtz-Zentrum Dresden-Rossendorf successfully tested a new model explaining how magnetic fields create astrophysical jets in young stars. The findings suggest that magnetic fields can focus plasma to form jets, potentially leading to breakthroughs in cancer therapy and medical engineering.
Scientists at LMU München have synthesized a ferromagnetic superconducting compound that exhibits both properties simultaneously. The new compound, (Li,Fe)OH(FeSe), can coexist with ferromagnetism and superconductivity even at higher temperatures than previously known.
Scientists discovered a new material, WTe2, exhibiting unlimited growth in magnetoresistance when exposed to strong magnetic fields. This phenomenon could be useful for detecting magnetic fields in scanners.
The University of Washington's fusion reactor design has the potential to produce economical fusion power, rivaling costs for new coal-fired plants with similar electrical output. The dynomak reactor uses a magnetic field within a closed space to hold plasma in place, allowing for continuous heating and electricity generation.
New modeling studies show most stars were formed from unstable protostar clusters that broke up, leaving behind single or binary stars. These clusters, however, rarely form stable multi-star systems, instead ejecting stars to achieve stability.
Researchers at Sandia National Laboratories have produced a trillion fusion neutrons using the MagLIF technique, which uses magnetic fields and a laser to preheat hydrogen fuel. The achievement demonstrates the viability of this novel approach for achieving break-even fusion.
Physicists at the University of Utah have developed a method to control electrical current in a cheap, plastic LED using nuclear spins. They achieved this at room temperature without strong magnetic fields, bringing the study closer to practical machines that work spintronically.
New observations from NASA's Venus Express mission show giant holes in Venus' ionosphere, suggesting a more complex magnetic environment. The findings provide additional clues to understanding Venus' atmosphere and its interactions with the solar wind.
Scientists at PPPL identified how magnetic reconnection transforms magnetic energy into particle energy, with 50% conversion rate. The process involves electron energization and creation of electrically charged field that powers ions.
Researchers have successfully visualized the effects of transcranial magnetic stimulation (TMS) on neurons in real-time using voltage-sensitive dyes. The high-resolution imaging data may lead to optimized TMS parameters and learning processes for treating neurological diseases.
Brightpoints provide a new way to track magnetic field evolution and material flow inside the sun. Researchers found that bands of these markers moved steadily toward the equator over time, along the same path as sunspots.
Researchers studied a unique solar storm that interacted with Earth's magnetic field, revealing the presence of a dense solar filament material. The event showed a complex interplay between the CME and the magnetosphere, resulting in reduced magnetic effects.
Researchers directly observe free-electron Landau states for the first time, revealing complex rotational dynamics that differ from classical predictions. The findings suggest that electron behavior in magnetic fields is more intricate than previously thought.
Researchers have developed an elastic material coated with microscopic, hairlike structures that tilt in response to a magnetic field. The microhairs can direct water upward and even control the flow of light.
Scientists at the Joint Quantum Institute have successfully demonstrated on-chip topological light, showcasing a robust and consistent method for photonic signal processing. The breakthrough enables the development of microscale delay lines with low energy loss, opening up new possibilities for quantum information processing.
Researchers at Chapman University and Vienna University of Technology successfully separated a neutron from its magnetic field, defying classical notions of particle properties. The experiment utilized neutron interferometry to isolate the particle's spin from its direction of motion.
Researchers at Vienna University of Technology demonstrate a new quantum paradox where neutrons can be separated from their properties, allowing for more precise measurements. This 'Quantum Cheshire Cat' phenomenon shows that particles can exist in multiple states at once, making it ideal for applications requiring high precision.
Astronomers have observed a unique transformation of a binary system containing a rapidly spinning neutron star. The system, known as AY Sextantis, underwent a dramatic change in behavior, with the pulsar's radio beacon vanishing and its gamma-ray emission increasing fivefold.
Researchers from Cambridge University have broken a world record by trapping a strong magnetic field in a high-temperature superconductor. The achievement demonstrates the potential of these materials for various applications, including energy storage and transportation systems.
A NASA model can predict and visualize the interaction between solar wind, solar radiation, and asteroid surfaces in unprecedented detail. The model adapts to complex activities and provides highly efficient simulations, potentially identifying hazards for human explorers.
The magnetic hose, made of a ferromagnetic cylinder covered by a superconductor material, efficiently transports magnetic fields. The device has potential applications in quantum computing, enabling individual control over quantum systems.
Researchers developed a new measurement system that uses the spatial variation of magnetic fields to accurately measure positions of ferromagnetic objects, enabling non-contacting measurements over large distances. The system can be used in industrial machinery and even predict imminent collisions between cars.
Researchers have discovered a new concept for particle separation, leveraging horizontal levitation of non-magnetic particles in a magnetic field. The technique exploits differences in density and magnetic susceptibility to separate glass and pyrite particles.
Researchers have developed a system to track footballs in three-dimensional space using low-frequency magnetic fields. This technology can improve accuracy for referees and viewers, especially in situations where the ball is blocked from view or visibility is low.
Researchers have developed a novel approach to magnetic cooling, utilizing solid magnetic substances as refrigerants in miniaturized magnetic refrigerators. The technology is more efficient and 'green' than traditional fluid-compression refrigeration, with potential applications in domestic and industrial settings.
A new study reveals magnetic fields near supermassive black holes can match the force of their gravitational pull, affecting gas dynamics and outflows. Magnetic field strengths are comparable to those produced by MRI machines.
Multi-wavelength observations of sunspots have provided new insights into their complex and dynamic nature. The data revealed rapidly rotating plasma rolls, powerful shocks, and widespread plasma eruptions driven by solar-energy flux and controlled by intense magnetic fields.
Researchers at New Jersey Institute of Technology have made a groundbreaking discovery about the structure and activity of the Sun. They found that buoyant magnetic-flux ropes on the solar surface can trigger powerful plasma eruptions in the atmosphere, leading to intense heating and rapid acceleration of plasma.
Researchers have developed sperm-inspired microrobots that can be controlled by oscillating weak magnetic fields, enabling applications such as targeted drug delivery and in vitro fertilization. The robots consist of a head coated in a thick cobalt-nickel layer and an uncoated tail, propelled forward by magnetic torque.
Researchers used high-powered lasers to create table-top supernovae, recreating the explosive events that occur when stars reignite or collapse. The experiments revealed irregular 'knotty' features and intense radio and X-ray emissions, confirming a theory about the interaction between magnetic fields and interstellar material.
A team of researchers has successfully replicated the amplification of cosmic magnetic fields in a laboratory experiment, using supercomputer simulations and high-powered laser beams. The findings provide insight into the origins of magnetic fields in interstellar space.
University of Leicester researchers captured stunning images of Saturn's auroras, providing evidence for the theory that Saturn's magnetic tail collapse causes auroral displays. The findings support a similar process on Earth.
Researchers found that the magnetic field of a neutron star takes on a stable structure and evolution slows down, challenging previous theoretical models. The discovery could help scientists measure neutron star properties and gain insights into matter at extreme densities.
A team of researchers has discovered that the afterglow from a gamma-ray burst behaves differently than expected, with 10,000 times more circularly polarised light detected. The findings provide new insights into the extreme properties of matter under shockwave conditions.
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.
Researchers have developed an analytical approximation to study SQUID dynamics, enabling faster computation and evaluation of sensitivity in magnetometers. The technique, used for low-noise amplifiers and antennas, reduces simulation time to practically zero.
A recent study by North Carolina State University reveals that impurities can either hinder or improve the performance of a key superconductive material, Bi2212. The size of the impurities determines their effect, with nanoscale defects appearing to enhance superconductivity, while large-scale impurities weaken it.
Researchers use NASA's SDO to map dynamic magnetic fields and brightpoints in the sun's atmosphere, revealing deep-seated activity and potential cells of flowing material. This breakthrough offers near real-time mapping of the sun's interior, affecting solar flares and other events.
Researchers at KAIST developed a new system for wireless power transfer with an extended range of up to 5 meters, making it possible to charge multiple devices simultaneously. The system uses a compact and scalable design with a low Q factor, achieving higher efficiency and reliability compared to previous technologies.
A team of scientists, including a professor from Moscow State University, has developed the first quantitative description of sunspot formation and the Solar activity cycle. By monitoring magnetic field helicity in active regions, they gained insight into the Sun's interior and its impact on solar activity.
Researchers from the University of Michigan and Princeton have discovered a new kind of magnetic behavior that can help make nuclear fusion reactions more efficient. This breakthrough could lead to advancements in nuclear energy, as fusion generates helium without radioactive waste.
Researchers have successfully used flawed but colorful diamonds as sensitive magnetometers to study high-temperature superconductors. These diamond sensors can measure tiny magnetic fields in exotic materials and even human tissue, offering a new tool to explore the physics of these poorly understood materials.
Researchers trained immune cells of mice to fight melanoma using nanoparticles and magnetic fields, with treated tumors stopping growth and six out of eight mice surviving for over four weeks. The study uses artificial antigen-presenting cells to activate naive T cells, revealing a key difference in cancer-fighting cells.
Researchers used NASA's IBEX data to build a computer model of the interplanetary magnetic field, revealing a non-uniform distribution of cosmic ray particles. The findings shed light on why more high-energy cosmic rays are measured coming from one side of the sun than the other.
Recent measurements have validated IBEX's signature finding on the local interstellar magnetic field direction. The consistent picture reveals how the heliosphere is shaped by the interstellar magnetic field, influencing cosmic rays and life on Earth.
Duke University researchers have successfully demonstrated wireless power transfer using a 'superlens' technology that focuses magnetic fields, enabling the transmission of power over distances much larger than traditional setups. This breakthrough could enable smaller, more practical wireless charging solutions for everyday use.
Researchers at Sandia National Laboratories successfully reduced magneto-Rayleigh-Taylor instabilities by adding a secondary magnetic field created by a Helmholz coil to their experiments. This modification allowed the liner to compress fuel more effectively, potentially leading to controlled nuclear fusion.
RAMBO allows researchers to run spectroscopy-based experiments in pulsed magnetic fields of up to 30 tesla on a tabletop. The device enables direct optical access to the sample and combines ultrastrong magnetic fields with short and intense optical pulses.
Researchers at Georgia State University discovered that negative resistivity can produce a positive resistance in GaAs/AlGaAs semiconductor devices under the influence of a magnetic field. The sign reversal in the Hall effect also occurs.
The National Institute of Standards and Technology (NIST) has developed prototype calibration tools for ultra-low field magnetic resonance imaging (ULF-MRI), a technique that provides new contrast mechanisms and practical advantages. The ULF-MRI phantoms are designed to allow direct comparison of performance between ULF-MRI and clinica...
Astronomers have glimpsed the infrastructure of a gamma-ray burst jet using observations from the Liverpool Telescope's RINGO2 instrument. The study reveals that light from the reverse shock wave, which drives back into the jet debris, shows strong and stable polarized emissions.
Scientists at Vienna University of Technology have discovered a way to couple electricity and magnetism in materials, opening up possibilities for new electronic devices such as amplifiers, transistors and data storage devices. The breakthrough involves switching magnetic excitations with an electric field in a material called DyMnO3.
Researchers have developed a nano-SQUID-on-tip that measures magnetic fields at distances as small as a few nanometers from the sample, breaking the record for sensitivity and resolution. This tiny device may also enable measuring the magnetic field from the spin of a single electron, a major breakthrough in magnetic imaging.
Researchers at Rice University discovered the mechanism behind superfluorescent bursts in quantum wells, enabling compact semiconductor devices to produce picosecond pulses of light. The discovery may lead to new telecommunications equipment and other devices transmitting signals at picosecond speeds.
The Solar Wind Electron Analyzer (SWEA) will track how charged particles, such as planetary oxygen ions, escape the planet's atmosphere. By identifying electrons in the solar wind and Martian ionosphere, SWEA can determine where the boundary layer between the two regions is located.
Researchers at Case Western Reserve University are working on an MRI-guided robotic heart catheter to accurately navigate and target tissues in the heart. The technology aims to reduce complications associated with current treatments for arterial fibrillation, allowing doctors to more precisely ablate the affected tissue and restore no...
Researchers have developed a new hyperpolarization technique for MRI scans using naturally occurring pyruvic acid, reducing the need for potentially toxic substances. This breakthrough improves imaging quality and diagnosis while minimizing health risks.