Articles tagged with Magnetic Fields
Scientists have discovered a rare type of white dwarf pulsar, shedding light on stellar evolution and the origin of strong magnetic fields. The newly detected pulsar, J1912-4410, has a size similar to Earth but a mass at least as large as the Sun.
Scientists have discovered that stagnant lid tectonics, not plate tectonics, existed on early Earth, releasing heat and forming continents. This finding contradicts previous assumptions about the role of mobile plate tectonics in life's emergence, suggesting an alternative mechanism was present.
Scientists at the University of Tokyo develop a technique to create nano-sized quantum sensors on measurement targets, enabling high-resolution magnetic field imaging with applications in superconductors and electronic devices. The breakthrough uses boron vacancies or lattice defects in hexagonal boron nitride film, allowing for easy d...
A research group from Tohoku University has made a breakthrough in developing a palladium-based metamagnetic shape memory alloy that exhibits low energy loss, even at low temperatures. The new alloy significantly reduces energy loss compared to existing materials, making it suitable for applications such as magnetic sensors and actuators.
Researchers at Helmholtz-Zentrum Dresden-Rossendorf have discovered a potential therapeutic approach for curing neurodegenerative diseases using magnetic fields. In vitro trials showed that damaged motor neurons can be restored by exposure to magnetic fields, leading to axonal transport and regeneration of mitochondria.
The CALorimetric Electron Telescope (CALET) study found that the movement of cosmic rays is affected by the Sun's magnetic field, causing fluctuations in galactic cosmic rays reaching Earth. The research indicates that electrons are more susceptible to solar modulation than protons.
The Parker Solar Probe has detected streams of high-energy particles that match supergranulation flows within coronal holes, suggesting these are the origins of the fast solar wind. The solar wind's charged particles were accelerated by magnetic reconnection within funnel structures on the sun's surface.
Researchers used data from NASA's Parker Solar Probe to explain how the solar wind surpasses speeds of 1 million miles per hour. The energy released from the magnetic field near the sun's surface drives the fast solar wind, comprising ionized particles flowing outward from the sun.
Researchers at Cornell University have developed a method to control the behavior of swarming microrobots by varying their size. By mixing different sizes of microrobots, they can self-organize into diverse patterns that can be manipulated when a magnetic field is applied. This technique may help inform future applications such as targ...
Scientists at Aalto University and MPS used petascale supercomputers to simulate the Sun's magnetic field, finding evidence for a small-scale dynamo that challenges conventional understanding. This discovery could lead to improved predictions of major solar events, providing vital extra time for preparation.
Researchers have developed a wearable brain scanner that can measure brain function in people who are standing and walking. This breakthrough could help diagnose conditions such as Parkinson's Disease, stroke, and concussion. The system uses small sensors to detect magnetic fields generated by cellular activity in the brain.
Researchers developed a scalable approach to synthesize ferromagnetic single-atom spin catalysts, which exhibit interatomic quantum spin exchange interaction and induce local magnetic moments. The Ni1/MoS2 SASC demonstrates a dramatic enhancement of OER magnetocurrent by 3,000% under a mild magnetic field.
Researchers have found a new superconducting state in an Ising superconductor, which can resist magnetic fields and has the potential to control devices such as transistors. The discovery, published in Nature, was made possible by creating a device that can switch between different protection modes using an electric field.
Researchers have imaged a double-lobed structure resembling Jupiter's radiation belts around an ultracool dwarf, revealing the presence of high-energy electrons trapped in its magnetic field. This discovery provides a new method for assessing the shapes of magnetic fields on brown dwarfs and exoplanets.
Researchers have identified extreme field reversals around FRB 20190520B, a persistently active repeating Fast Radio Burst. This finding provides insights into the turbulent magnetized environment surrounding the cosmic explosion, which may be caused by signal passage through a companion's halo.
Scientists at the University of Electro-Communications successfully measured the effects of an ultra-high magnetic field on a transition metal oxide, discovering signs of a new magnetic superfluid state. This achievement has significant implications for spintronics technology and potential applications in quantum computing.
A Cornell astrophysicist explains how the Imaging X-ray Polarimetry Explorer (IXPE) satellite detected polarized X-rays from a magnetar, revealing 'photon metamorphosis' – a transformation of X-ray photons. The phenomenon is a natural consequence of quantum electrodynamics under strong magnetic field conditions.
Researchers from the ARC Centre of Excellence in Exciton Science have demonstrated a new chip-scale approach using OLEDs to image magnetic fields, offering a potential solution for portable quantum sensing. This technique enables small, flexible, and mass-producible sensing without requiring input from a laser or cryogenic temperatures.
Scientists used paired-pulse TMS to condition brain responses in a group of 75 people, finding that listening to a tone triggered muscle contraction in the thumb. The study suggests TMS could be used therapeutically to improve mobility in Parkinson's disease patients or treat depression.
Researchers from the University of Manchester have discovered that graphene displays a remarkably strong response to magnetic fields, reaching above 100% in standard permanent magnets. This is a record magnetoresistivity among all known materials, attributed to the presence of Dirac fermions in high-mobility graphene.
Astronomers observe repeating radio signal from star YZ Ceti, indicating potential magnetic field of nearby Earth-sized planet YZ Ceti b. The detection provides new insights into the environment around stars and has implications for the search for habitable exoplanets.
Researchers at Argonne National Laboratory have discovered ultrasmall swirling magnetic vortices, known as merons and skyrmions, in an iron-containing material. These tiny magnetic structures show promise for future computer memory storage and high-efficiency microelectronics due to their stability and adaptability to binary code.
Researchers at Kyoto University have successfully created stable plasmas using microwaves, a key step towards harnessing nuclear fusion's massive energy potential. The team identified three crucial steps in plasma production and used Heliotron J to generate the dense plasmas.
Heat flow in the Earth's core is linked to anomalies in the magnetic field, particularly over Africa and the Pacific. The cooling process does not happen uniformly, causing regional changes to the magnetic field.
The team creates software and hardware for a 4D printer that can control shape-changing materials in response to external magnetic fields or mechanical deformation. This technology enables the design of soft robots, smart sensors, and substrates with self-healing capabilities.
Researchers discovered metal ion plasma generation under strong magnetic field using microwave resonator, maintaining plasma state for extended periods. This method has potential to reduce energy consumption and improve semiconductor manufacturing processes.
A South Korean research team has successfully searched for Dine-Fischler-Srednicki-Zhitnitskii (DFSZ) axion dark matter using a new experimental setup. The group achieved a higher sensitivity than existing experiments, excluding axion dark matter around 4.55 µeV at DFSZ sensitivity.
Researchers have developed a new system to facilitate the diagnosis and treatment of gastrointestinal motility disorders. The ingestible 'smart pill' tracks movement through the GI tract using magnetic fields, allowing for more accurate and efficient diagnosis and targeted therapeutic interventions.
Engineers at MIT and Caltech have developed an ingestible sensor that can track its location as it moves through the digestive tract, revealing where slowdowns in digestion may occur. The sensor uses a magnetic field produced by an electromagnetic coil outside the body to calculate its position.
Researchers at MIT have observed a rare resonance in colliding ultracold molecules for the first time, shedding light on the forces that drive molecules to chemically react. The discovery could lead to new ways to steer and control certain chemical reactions using magnetic fields.
Philip J.W. Moll's ERC Consolidator Grant aims to engineer electronic interactions within a single material, exploring new paradigms for interfaces between two regions of different electronic behaviors, such as superconductivity and magnetism.
Researchers at the University of Rochester develop a new method to control electron spin in silicon quantum dots, paving the way for practical silicon-based quantum computers. The technique harnesses spin-valley coupling to manipulate qubits without oscillating magnetic fields.
Researchers at MIT have discovered a way to switch graphene's superconductivity on and off with short electric pulses, opening up new possibilities for ultrafast brain-inspired electronics. This discovery could lead to energy-efficient superconducting transistors for neuromorphic devices.
A study published in Nature Astronomy suggests that a volcano-like rupture on the surface of a neutron star could have caused its sudden slowdown. The research used X-ray data from orbiting telescopes to analyze the magnetar's rotation and found evidence supporting this theory.
A team of researchers led by Boston College Assistant Professor Brian Zhou developed a new quantum sensor technique to image and understand the origin of photocurrent flow in Weyl semimetals. They found that the electrical current flows in a four-fold vortex pattern around where light is shined on the material.
The BepiColombo and Solar Orbiter missions provided a unique insight into Venus' atmosphere retention through their gravity-assist flyby. The study revealed that the induced magnetosphere protects the atmosphere from solar wind erosion, extending to an unexpected distance of 1,900 km above the planet's surface.
Engineers design miniature robots that can rapidly shift between liquid and solid states, with magnetic properties, to overcome traditional robot limitations. The new material is used to remove foreign objects, deliver drugs, and assemble parts in hard-to-reach spaces, opening up new possibilities for medical and engineering applications.
Researchers used density functional theory to investigate the mechanical properties of superionic ice XVIII, which is thought to make up a large part of Neptune and Uranus. The study found that dislocations in the crystal lattice produce shear, leading to macroscopic deformations and potentially influencing the planets' magnetic fields.
Researchers report the discovery of photonic hopfions, a new family of 3D topological solitons with freely tunable textures and numbers. These structures exhibit robust topological protection, making them suitable for applications in optical communications, quantum technologies, and metrology.
Researchers create a hydrogen plasma with known temperature anisotropy, demonstrating the Weibel instability and its potential to seed galactic dynamo magnetic fields. The study uses a novel experimental platform to measure the complex topology of generated magnetic fields.
Researchers found a strong correlation between birds captured outside their expected range and geomagnetic disturbances. The study suggests that birds rely on magnetoreceptors for navigation, which can be affected by solar activity and other factors. This knowledge can help scientists understand threats to birds and the ways they adapt.
Researchers observed a sudden slowing of the star's angular momentum, followed by three Fast Radio Burst-like radio bursts and a month-long episode of pulsed radio emission. The synchronicity of these events suggests an association between magnetar spin-down glitches and radio emissions.
The QUIJOTE experiment has provided detailed maps of the galaxy's microwave emission processes, characterizing synchrotron emission with unprecedented accuracy. The new data also enable the study of anomalous microwave emission and offer insights into dark matter decay processes.
Scientists from Southwest Research Institute (SwRI) used data from NASA's Juno spacecraft to observe magnetic reconnection between Ganymede and Jupiter. The study found accelerated electrons traveling along the magnetic field at Ganymede's magnetopause, indicating the presence of reconnection.
Researchers created a magneto-impedance sensor magnetometer that measures Earth's geomagnetic field fluctuations, enabling real-time monitoring of space weather and advancement of space research. The device is lightweight, power-efficient, and low-cost, making it suitable for constructing multi-point observation networks.
Researchers from UPNA/NUP develop programmable matter by manipulating thermoplastic and iron powder using heat and magnetic fields. This technology enables the creation of biomedical devices, tactile displays, and object manipulators.
Lehigh University has received nearly $1.75 million in funding from the US Department of Energy to support fusion energy research, specifically for ITER's long-pulse scenarios. The project aims to prepare ITER for operation and address critical research questions related to plasma control.
A computer model simulates virtual groups of migrating animals and finds that sticking together is key to finding a destination, even when the magnetic compass is unreliable. The model showed that more than 70% of animals made it home simply by joining with others and following their lead.
Scientists at Johannes Gutenberg University Mainz have developed a new class of materials for transporting spin waves over long distances in antiferromagnets. This breakthrough could significantly increase computing speed and reduce waste heat in microelectronic devices.
Researchers detected sub-microscopic magnetite and metallic iron particles in Chang'E-5 lunar soil through electron microanalysis. This discovery provides direct evidence for the formation of native magnetite in lunar samples and sheds light on the origin of Moon's magnetic anomalies.
Researchers developed a new approach to analyze coercivity in soft magnetic materials using machine learning and data science. The method condenses relevant information from microscopic images into a two-dimensional feature space, visualizing the energy landscape of magnetization reversal. This study showcases how materials informatics...
A study by HSE researchers found that only the left inferior frontal gyrus is critically involved in action naming, which could help preserve speech in patients after brain surgery. The study used fMRI and rTMS to stimulate the brain and found that stimulating this region led to more accurate action naming.
Scientists at Argonne National Laboratory have discovered tiny magnetic vortices called skyrmions that could store data in computers, promising 100-1000 times better energy efficiency than current memory. The team used AI and a high-power electron microscope to visualize and study the behavior of these micro-scale magnetic structures.
The Princeton Plasma Physics Laboratory (PPPL) has received over $12 million in funding from the US Department of Energy to speed up the development of a pilot plant powered by fusion energy. This initiative aims to accelerate the production of clean and abundant electricity, a crucial step towards mitigating climate change.
Researchers at Aalto University developed a new material that changes its electrical behavior based on previous experience, effectively giving it adaptive memory. The material responds differently to varying magnetic field strengths, which affects its conductivity and allows for bistability and rudimentary learning-like properties.
The DiaQNOS project aims to develop quantum sensors for improved brain tumor surgery. Magnetic field sensors will refine neuronavigation, enabling more precise incision paths. Researchers from Mainz University and partners will create a device suitable for use in surgery.
A team of researchers has developed a prototype of a quantum microscope that can see electric currents, detect fluctuating magnetic fields, and even see single molecules on a surface. The microscope uses atomic impurities and van der Waals materials to achieve high resolution sensitivity and simultaneous imaging of magnetic fields and ...
A new study published in Science found that a highly magnetised dead star, known as a magnetar, is likely to have a solid surface with no atmosphere. The research team used data from the NASA satellite IXPE to observe the polarisation of X-ray light emitted by the star, which revealed a signature consistent with a solid crust.
Researchers analyzed fluid dynamics and electrically conducting fluids to conclude the Earth must have been magnetized before or as a result of its formation. This discovery could help narrow down theories on the Earth-Moon system, with implications for future research.
MIT researchers have developed a magnet-based system to track muscle length during movement, which could improve the accuracy of prosthetic limb control. The system uses small magnets implanted in muscle and measures distances between them using a credit-card-sized sensor.