Articles tagged with Magnetic Fields
The study reveals a multi-state transition in NbSe2, transitioning from superconductor to special metal (Bose metal) and then to insulator. The team found that the transition is driven by quantum fluctuations, with the material exhibiting minimal resistance due to moving vortices.
Scientists have detected the first polarized radio waves from a gamma ray burst jet, revealing that magnetic fields are more patchy and tangled than previously thought. The discovery was made possible by advanced radio telescopes and allows researchers to test theories about the structure of magnetic fields within jets.
An international team of astronomers has captured the first-ever polarized radio waves from a distant cosmic explosion, known as gamma-ray burst GRB 190114C. The discovery provides new insights into how jets are formed in gamma-ray bursts and could shed light on the role of magnetic fields in powering these energetic events.
Researchers found that even after losing ability to carry electrical current with no energy loss, materials retain some conductivity and possibly electron pairs required for superconductivity. The discovery supports the role of 'charge stripes' in formation of charge-carrier pairs essential to resistance-free flow of electrical current.
The new system achieves direct, atom-resolved imaging with a residual magnetic field less than 0.2 mT, 10,000 times smaller than conventional lenses. Researchers have successfully observed the atomic structure of silicon steel sheets, enabling unprecedented characterization of magnetic materials.
Researchers at NIST developed a method to measure magnetic properties of nanoparticles by rapidly enlarging magnetic bubbles, revealing the orientation of individual nanoparticle poles. This technique enables fast and economical measurement of magnetic stability for various medical and environmental applications.
A new method allows researchers to map magnetic field orientations in space using ground-based telescopes, revolutionizing studies of star formation and cosmic rays. The 'Wisconsin technique' generates high-resolution maps comparable to those obtained with the Planck mission.
The new magnetic metamaterial, made of plastic and copper, can amplify MRI imaging capabilities and cut scan time in half. It has the potential to increase the number of patients seen by clinics and decrease associated costs without risking higher-strength magnetic fields.
A team of researchers has discovered a massive radio-emitting plasma ridge in the gap between two merging galaxy clusters. This finding challenges existing theories on particle acceleration in intergalactic space and suggests an unknown mechanism at play.
Researchers developed a new composite material with magnetic shape memory activated by magnetism, offering advantages in medicine and robotics. The material consists of polymer and droplets of magnetorheological fluid, increasing stiffness up to 30 times.
A team of scientists has created a stable, supersonic, and strongly magnetized plasma jet in a laboratory setting. The team successfully used advanced diagnostics to confirm the jet's formation and characterize its properties.
Researchers from Helmholtz-Zentrum Dresden-Rossendorf found that Venus, Earth, and Jupiter's tidal forces impact the Sun's magnetic field, causing it to follow a regular cycle. This discovery explains the Sun's 11-year activity cycle and has implications for climate predictions and space weather.
Researchers at the University of Arkansas have discovered a promising new material that can efficiently store information using both magnetic and electric fields. The study suggests this material, bismuth ferrite, could lead to faster and cheaper computer memory.
A new study reveals that charged particles can emit bright flashes of gamma rays by interacting with the quantum vacuum, challenging a long-held assumption about the nature of empty space. The researchers used high-powered lasers and strong magnetic fields to create conditions where Cherenkov emission could occur in vacuum.
Researchers at MIT have developed a new way to measure atomic-scale magnetic fields, not only up and down but also sideways. The technique uses nitrogen-vacancy defects in diamond to detect tiny variations in magnetic fields, providing high precision in multiple dimensions.
Research by the Princeton Plasma Physics Laboratory and international team of scientists shows that twisted magnetic fields have a limited number of possible evolutions, leading to the formation of a torus shape. The helicity of the twist constrains the outward expansion of plasma, resulting in a self-organized structure.
The latest data from Juno and Cassini spacecraft has challenged existing theories on planetary formation and behavior, revealing new insights into Jupiter and Saturn's magnetic fields and atmospheres. Surprisingly, the atmosphere is evenly mixed, contradicting conventional predictions.
Scientists from France, Spain, and Germany show that applying an electric field can induce superferromagnetism in iron nanograins on a BaTiO3 substrate. This 'straintronics' approach offers a scalable, fast, and energy-efficient alternative to traditional magnetic memories.
Princeton researchers have demonstrated a new way of making controllable 'quantum wires' in the presence of a magnetic field. They found channels of conducting electrons that form between two quantum states on the surface of a bismuth crystal subjected to a high magnetic field. The current flow in these channels can be turned on and of...
Researchers at UPV/EHU developed a protocol for quantum-enhanced NMR to measure nuclear and electronic spins in arbitrary samples. This allows for unparalleled sensitivity and resolution of chemical shifts in tiny picoliter samples, opening up new research lines for biological sample study.
Astronomers have discovered that particle escapees from black holes steal rotational energy through interactions with magnetic fields, resulting in high-speed plasma jets. The new simulations show two main mechanisms: the Blandford-Znajek process and a particle-boosting mechanism near the equator.
Researchers from Ural Federal University and University of Edinburgh have developed a new theory on the collective behavior of magnetic nanoparticles for cancer treatment. Their computer simulations show that particles interact and influence each other, producing a unique effect that is not described by traditional Debye theory.
Researchers at Ames Laboratory have stabilized skyrmions without an external magnetic field, observing their behavior over time, temperature, and magnetic field. This breakthrough provides a solid foundation for theorists to better understand the phenomenon.
Researchers at NC State University have created 3D-printed flexible mesh structures that can be controlled with applied magnetic fields while floating on water. The structures can also mimic the properties of water striders and have potential applications as soft robots or tissue scaffolds.
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.
Researchers found that magnetite in Hadean zircons is likely a secondary deposit, formed after crystallization, precluding analysis of the Earth's earliest magnetic field. The presence of secondary magnetite indicates that a magnetic field may have existed during the Hadean Eon, but more evidence is needed to confirm this.
A new multilayer structure with an enhanced magnetoresistance ratio enables the creation of highly sensitive magnetic field sensors. This breakthrough could measure brain activity at room temperature with millisecond resolution.
Researchers from RIKEN and JAXA use ALMA radio observatory to measure magnetic field strengths near two supermassive black holes. The findings reveal that the magnetic fields are insufficient to heat coronae to one billion degrees Celsius, contradicting previous assumptions.
Saturn's iconic rings are being pulled into the planet by gravity, draining an Olympic-sized swimming pool in half an hour. The research suggests the ring system will be gone in 300 million years, with some particles also falling onto Saturn's geysers from moon Enceladus.
Researchers discovered that an inhomogeneous magnetic field affects the magnetization reversal mechanism of exchange-coupled structures, increasing sensitivity of magnetic field detectors. The study reveals a step-wise hysteresis loop and changes in the shape of the loop with varying magnetic field gradients.
Researchers at SLAC National Accelerator Laboratory found that twisted magnetic field lines in black holes create the most powerful particle accelerators in the universe. This process can accelerate electrons and protons to extreme energies, resulting in cosmic rays with unprecedented powers.
A recent study reveals that Fe3Sn2 exhibits nematic electronic state and giant magnetization-driven energy shift, shedding new light on the presence of spin-orbit coupling in kagome lattices. The research also shows that the material can be manipulated to change its electron energy structure through tuning the magnetic field.
Researchers induce transformation between meron-antimeron and skyrmion lattices using magnetic field. The ability to manipulate nanometer-scale spin textures is key to developing next-generation spintronics with low power consumption.
Scientists have created microscopic three-dimensional polymer shapes that can be programmed to move in any direction in response to multiple types of stimuli. These microstructures could lead to the creation of more efficient solar panels that turn to follow the sun.
A research group at Osaka University has observed magnetic reconnection driven by electron dynamics for the first time in a laboratory setting. The study uses high-power lasers to create plasma conditions similar to those found in space, allowing researchers to investigate electron-scale phenomena alongside macroscopic structures.
Researchers have discovered a way to create artificial magnetic fields using graphene sheets with a twist, enabling the control of electronic properties through electrical fields. This breakthrough has clear technological potential and could lead to new materials with unique properties.
Researchers have used magnetoencephalography to measure magnetite levels in the human brain, which could lead to new studies on its role in neurodegenerative diseases. The study found greater accumulation of magnetite in the brains of older individuals, primarily in the hippocampus.
Scientists have defied the long-held principle of magnetic coupling by creating a device that behaves like an electric diode, potentially leading to improved wireless power transfer technologies. This breakthrough could enhance the efficiency of recharging phones, laptops, and cars.
Researchers discovered a two-dimensional material that can become a magnetic topological insulator even without an external magnetic field. The material, chromium triiodide (CrI3), exhibits collective spin excitations called magnons, which behave similarly to photon waves.
Researchers at the University of New Hampshire have captured a rare event involving magnetic reconnection, a process that produces a quick but mighty explosion in the Earth's magnetotail. This is the first time scientists have been able to track the details of this energy conversion process using unprecedented speed and resolution.
Researchers from PPPL presented their work on controlling plasma instabilities in fusion reactions, enabling high-performance plasmas. They also explored the formation of stars and planets through experiments on black hole magnetorotational instability.
Scientists at ITMO University and Lebedev Physical Institute create a microwave antenna that creates a uniform magnetic field in large volume, enabling super-sensitive magnetic field detectors. The device uses nanodiamonds with defects to achieve coherent control of electronic spins, improving magnetometer sensitivity.
Researchers at DIII-D National Fusion Facility have developed a revolutionary new technique to cool a fusion reactor, reducing the risk of disruptions and producing runaway electrons. The 'inside-out' cooling approach uses boron dust injected into the plasma to evenly radiate away energy.
Researchers at the Princeton Plasma Physics Laboratory found that plasma turbulence could amplify magnetic fields to dynamical strengths in a hot, dilute plasma, such as those residing within clusters of galaxies. This discovery provides a possible answer to one of the most important unsolved problems in plasma astrophysics.
Scientists are working on a new, powerful magnet design using high-temperature superconductors to build the world's first energy-producing fusion experiment. The goal is to achieve a net energy gain by 2025 and make fusion a viable source of clean energy.
Researchers from MAGPIE laboratories simulate stellar winds interacting with planetary magnetic fields, reproducing magnetopause formation and low-pressure regions. Laboratory experiments utilize intense electric pulses to create high-speed plasma plumes that interact with targets having magnetic fields.
Researchers blast trapped electrons with laser pulses to generate a cascade of particles, shedding light on astrophysical plasmas and potential industrial applications.
Researchers successfully employed microwaves to suppress Alfvén waves in plasmas, a crucial step towards harnessing clean and nearly limitless energy through fusion. The study, conducted at the DIII-D National Fusion Facility and ASDEX-Upgrade facility, demonstrates the potential of using electron cyclotron waves to control wave activity.
Researchers at Michigan Tech have developed a new approach to high-frequency MRI machines by using radio frequency probes inspired by microstrip patch antennas. These designs increase MRI resolution and provide uniform magnetic fields, leading to better images.
Researchers found that the Biermann effect can sever magnetic field lines, triggering magnetic reconnection. The discovery was made through computer simulations of high-energy-density plasma experiments, revealing a previously unknown mechanism in astrophysical plasmas.
Researchers have developed a method to measure magnetic properties of superconducting materials at extremely low temperatures and high magnetic fields.
Warren Ruder, a Pitt engineer, has been awarded $1.5 million from the NIH Director's New Innovator Award to develop magnetically induced synthetic gene networks for cell and tissue therapies. His research combines biology and engineering to create new biomimetic systems that can regulate disease pathways.
Researchers found that 'very dirty' superconductors exhibit abnormal behavior, violating the conventional theory of superconductivity. They discovered a power-law dependence between critical current density and magnetic field strength, allowing for a new understanding of Abrikosov vortices thermal fluctuations.
A team developed a new method for measuring magnetic field lines inside massive samples, enabling three-dimensional images of complex magnetic fields. This non-destructive technique has diverse applications in basic research and industry, including material analysis and visualization of electric motors and propulsion systems.
Researchers at Osaka University developed a new method to efficiently heat plasma using high magnetic fields and relativistic electron beams. By guiding the beam along magnetic field lines, they achieved higher energy coupling rates than previous methods, making this approach more suitable for controlled nuclear fusion.
A Japanese collaboration has successfully tracked hydrogen movement in solids using negative muons, a technique that could aid the development of hydrogen storage materials. By detecting local nuclear magnetic fields, researchers were able to study the dynamics of light elements in a solid from the fixed point of the nucleus.
Astronomers detected a fast-moving jet from a neutron star with a strong magnetic field, challenging the long-held idea that magnetic fields prevent jets from forming. The discovery was made using the VLA, which revealed radio waves produced by the jet, characteristic of other jet-producing systems.
Researchers observed a strongly magnetized accreting X-ray pulsar using the Karl G. Jansky Very Large Array and NASA's Swift space telescope. The discovery reveals a new class of jet-producing sources, contradicting previous expectations about strong magnetic fields.
Researchers identified tail electrons as the source of whistler waves, which help satellites determine their location in space. The discovery marks a new methodology for measuring wave propagation in reconnection, indicating that whistler waves are generated near active X-lines.
Researchers at NYU Abu Dhabi used NASA's Kepler mission and asteroseismology to determine precise rotational patterns of Sun-like stars, challenging current science on stellar rotation. They found that equatorial regions spin up to two and a half times faster than mid- to high latitudes.