Articles tagged with Magnetic Fields
The Solar Coronal Imager (Hi-C) has provided a major piece of the solar corona puzzle by capturing images of magnetic reconnection. This complex process heats the corona to temperatures up to 7 million degrees F, powered by magnetic fields that constantly warp and collide in bursts of energy.
Scientists used Cluster data to study the spatial characteristics of turbulence in the solar wind, finding evidence of small 'current sheets' that dissipate magnetic energy into heat. These current sheets play a crucial role in the dissipation of turbulence, contributing to the overall heating of the solar wind.
Researchers have developed a novel application of spintronics that converts magnetic energy to electric voltage efficiently and directly. The device utilizes magnetic nanostructures and manipulates magnetization dynamics to generate alternating current (AC) voltages from direct current (DC) magnetic fields.
Astronomers have detected giant outflows of charged particles from the center of our galaxy, stretching across half the sky and emitting an enormous amount of energy. The outflows were found to be driven by star formation and are carrying strong magnetic fields that may play a key role in generating the galaxy's overall magnetic field.
Scientists have found elusive Dirac electrons in a unique material, paving the way for faster and more secure quantum computing. The discovery uses superconducting properties to create a new kind of qubit, potentially overcoming local noise problems in quantum computers.
NASA's Solar Dynamic Observatory captured two prominence eruptions on Nov 16, 2012, releasing plasma into space. The eruptions occurred between 1-5 a.m EST and did not appear to be Earth-directed.
Researchers created a device that tames the flow of photons using synthetic magnetism, breaking the time-reversal symmetry of light. This innovation enables precise control over photon trajectories, opening up novel ways to manipulate light for various applications.
Scientists at the University of Warwick and Tohoku University have directly imaged Landau Levels, showing concentric rings that increase according to energy level. The discovery uses scanning tunnelling spectroscopy to overcome material disorder, shedding light on the quantum Hall effect.
A team of MIT researchers has found a way to use oscillating microscopic beads to carry out biomedical tests, potentially enabling multiple medical tests on a tiny device. The technique allows for precise measurements of tiny quantities of materials and could lead to fast, compact, and versatile medical-testing devices.
Researchers employed a high-powered laser to dramatically enhance electron paramagnetic resonance (EPR) spectroscopy, allowing for the study of tiny molecules at high resolution. This breakthrough will facilitate discoveries in fields such as new drug development and efficient plastic solar cells.
A team of scientists corrected a fundamental rule in quantum mechanics by slowing down particles to extremely cold temperatures. They used the University of Florida's Microkelvin lab, which can reach temperatures near absolute zero, to observe and manipulate quantum systems.
A multi-university team has developed a powerful laser-powered electron paramagnetic resonance (EPR) spectrometer to study free radicals and nitrogen atoms in diamonds. This innovation allows for high-resolution analysis of tiny molecules, shedding light on their structure and behavior.
Researchers at Sandia National Laboratories have successfully conducted dry-run experiments on a key aspect of their MagLIF nuclear fusion concept. The experiments tested the durability of cylindrical beryllium liners under intense magnetic fields, with promising results that suggest the concept is moving closer to achieving scientific...
Researchers at Aalto University developed a device that merges MEG and MRI technology to produce unprecedented accuracy in locating brain electrical activity non-invasively. This innovation improves the diagnosis of cancer patients and enhances brain mapping for epilepsy cases.
Researchers have created an 'MRI' of the Sun's interior plasma motions, revealing that convective motions are approximately 100 times slower than previously projected. This challenges existing theories on heat transport and magnetic field generation, requiring a re-evaluation of sunspot formation and solar dynamics.
Astronomers have observed a young star, V1647 Orionis, exhibiting intense X-ray activity in the McNeil's Nebula, driven by strong magnetic fields. The star's rapid rotation is also evident in its X-ray emission patterns.
The Solar Ultraviolet Magnetograph Investigation (SUMI) mission aims to study the intricate magnetic fields in the sun's chromosphere, a hard-to-observe area of the sun's low atmosphere. By observing ultraviolet light, SUMI will create a three-dimensional magnetic map of the region.
Researchers identify plasma upflows traveling at 20 km per second, suggesting 'impulsive heating' as possible cause. The study provides new insights into understanding extreme space storms and their impact on satellite communications and power grids.
Researchers at NIST and University of Maryland successfully created graphene quantum dots by manipulating the strain in graphene drumheads. By controlling the tension on the drumhead, they mimicked magnetic fields and created semiconducting regions with a band gap, crucial for computing and other applications.
Researchers used NASA's Solar Dynamics Observatory and New Solar Telescope to observe ultrafine loops in the sun's corona. These narrow loops are connected to higher lying, wider loops and may help explain how temperatures rise throughout the corona.
University of Iowa professor Jack Scudder and colleagues have observed a milestone discovery in astrophysics: the first experimentally resolved site of collision in magnetic reconnection. This process links magnetic field lines from the sun to the Earth's core, allowing charged particles to cross previously forbidden boundaries.
A new mini-sensor, Chip-scale Atomic Magnetometer (CSAM), has successfully measured the magnetic field of the human brain. The sensor's room temperature operation capability makes it more versatile than conventional cryoelectronics, which are limited to low temperatures.
The NASA Goddard Space Flight Center has delivered magnetometers for NASA's Mars Atmosphere And Volatile EvolutioN (MAVEN) mission. The instruments will measure the magnetic field on Mars, helping scientists understand particle motion and the solar wind's interaction with the planet's atmosphere.
Scientists discover that the sun does not have a bow shock due to insufficient speed to create one in the tenuous region. The new data from IBEX and Voyager spacecraft indicates a strong external magnetic field influencing the heliosphere's structure, leading to a new paradigm.
Researchers observed an intermittent motion of magnetic flux in a superconducting strip, resulting in alternating static and dynamic phases with zero and non-zero voltage peaks. The study's findings have potential applications for gate devices controlling on/off states in electrical systems.
Scientists at Penn State's Arecibo Observatory have discovered flaring radio emission from an ultra-cool star, shattering the previous record for lowest stellar temperature at which radio waves were detected. The star, named J1047+21, is a brown dwarf with a surface temperature not much higher than that of a giant planet.
Researchers at Duke University have developed a new technique to assemble crystalline structures using varying concentrations of microscopic particles and magnetic fields. They demonstrated the creation of over 20 programmed structures, paving the way for advanced optics, data storage, and bioengineering applications.
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 Complutense University of Madrid have mathematically shown that particles in magnetic fields can escape into infinity, never stopping. The phenomenon occurs under specific conditions, including the presence of current loops on the same plane and a large radius for the spherical surface.
Researchers at NASA's Goddard Space Flight Center discovered a unique solar pattern, dubbed 'coronal cells,' in the sun's corona. These cells are characterized by bright centers and dark boundaries, occurring in areas between coronal holes and filament channels, with implications for magnetic fields and solar wind emission.
Researchers have developed a honeycomb pattern of nano-sized magnets that can store computable information and reduce interactions between neighboring magnets by two-thirds. The arrays can be read by measuring their electrical resistance, enabling potential for faster and more efficient computing.
Researchers at Universitat Autonoma de Barcelona manufacture a cylinder that hides contents and makes them invisible to magnetic fields, paving the way for the invisibility of light. The device uses high-temperature superconductor material and is fully isolated from external magnetic fields.
Computer simulations performed at Sandia National Laboratories demonstrate a high-gain nuclear fusion method, releasing energy 100 times greater than input current. The technique uses a magnetic field to suppress heat loss during implosion, potentially leading to reliable electricity production from seawater.
Scientists from Stanford University and SLAC National Accelerator Laboratory have created a system of 'designer electrons' with unique properties. By tuning the fundamental behavior of electrons, researchers can create exotic variants of ordinary electrons that may lead to new types of materials and devices.
A team of researchers from Germany and the Netherlands has developed a novel material that enables the switching of spin currents at room temperature in a vertical magnetic field. This breakthrough increases storage density distinctly and has potential applications in future hard discs and non-volatile random access memory devices.
A team of researchers from Harvard and MIT suggests that massive asteroid collision is responsible for the Moon's magnetic anomalies. The anomaly is found around the rim of a 2,400-kilometer-diameter crater known as South Pole-Aitken.
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.
Researchers from Duke University and Boston College created a metamaterial that enhances magnetic forces without harming biological tissues or damaging electrical equipment. This breakthrough could lead to more efficient and safer applications of electromagnetism in devices such as magnetic levitation trains.
Researchers at Harvard Medical School have successfully induced magnetization in yeast cells by manipulating their iron transport system. This breakthrough provides new insights into the mechanisms of magnetization and its potential applications, including bioprocessing, tissue engineering, and therapeutic cell tracking. The study's fi...
Researchers at Georgia Institute of Technology have successfully squeezed a property called the nematic tensor, describing rubidium atoms in Bose-Einstein condensates. This achievement improves measurement precision for atomic clocks and magnetometers, with potential applications to quantum information systems.
Researchers discover several new phases of atomtronic matter, including a 'bond-order solid' with strong long-range dipole interactions. These phases are associated with the controlled movement of ultracold atoms in an optical lattice and have potential applications for data encoding and quantum computing.
A team of international scientists has developed a new way of magnetic recording that uses only heat to process information hundreds of times faster than current hard drive technology. This breakthrough could make future magnetic recording devices significantly faster and more energy-efficient.
Researchers at the Max Planck Institute for Astrophysics have created a high-precision map of the Milky Way's magnetic field using radio observations from over 30 researchers and 41,000 measurements. The map reveals both large-scale and small-scale features of the Galactic magnetic field, including turbulence in the gas.
The study found that weightlessness affected over 200 genes and hypergravity altered the expression of 44 genes. The findings suggest that prolonged space flight should not be underestimated, as the effect of weightlessness on cellular processes can have significant impacts.
Scientists at the University of Nottingham used a powerful magnet to levitate fruit flies, simulating weightlessness on Earth. The results show that the flies walk more quickly than expected, suggesting potential effects on living organisms in space. The study provides valuable insights for future space exploration and long-term survival.
Researchers developed a new navigation system that can accurately steer microbots through complex blood vessels, enabling precise drug delivery or tumor destruction. The system uses an external magnetic field to generate two distinct types of microbot movements: helical and translational motions.
A 'fantastic voyage' through the body is now possible with precision control thanks to a new capsule endoscope developed by Tel Aviv University researcher Dr. Gabor Kosa. The device uses MRI technology to navigate the digestive tract, enabling doctors to detect problems and perform biopsies or local drug delivery in a non-invasive manner.
The study reveals that Cygnus X has formed a 'cocoon' of trapped cosmic rays, which were accelerated by the intense stellar winds and shockwaves. This finding provides a unique glimpse into the early life of cosmic rays, long before they diffuse into the galaxy.
RUB researchers have solved the puzzle of the solar wind's temperature and energy equipartition by incorporating particle collisions into their model. This new approach explains experimental data significantly better than previous calculations, with implications for other dilute cosmic plasmas.
Recent experiments in the DIII-D tokamak have shown that spinning plasma can prevent magnetic island formation, which reduces fusion power production. By applying torque to spin the plasma faster while minimizing stray magnetic fields, tokamak fusion performance can be raised.
Physicists at Georgia Tech developed a unified theory describing coexistence of liquid and pinned solid phases of electrons in 2D under magnetic field. The theory predicts transition between phases as field is varied, showing emergence of hexagonal Wigner crystal with enhanced stability due to quantum correlations.
Scientists have found the first gamma-ray pulsar in a globular cluster, J1823-3021A, which is also the youngest millisecond pulsar discovered to date. Its high luminosity and strong magnetic field challenge current theories on its formation.
Scientists have developed a material that exhibits physical properties similar to graphene, including superconductivity and magnetic behavior. The discovery was made by combining ultra-high magnetic fields with the unique composition of SrMnBi2, which allows for easy doping with foreign atoms.
The MESSENGER mission has provided unprecedented data on Mercury's magnetic field, revealing a host of firsts, including evidence of widespread flood volcanism and direct measurements of its surface composition. The study sheds light on the planet's global magnetic field geometry and its interaction with solar wind.
A Johns Hopkins team discovered that MRI's strong magnet pushes on fluid in the inner ear's balance organ, leading to vertigo. This finding may affect results of functional MRI studies and could lead to a non-invasive method for diagnosing balance disorders.
Scientists have created an 'antimagnet', which can protect pacemakers and other medical devices from strong MRI signals. The device uses superconducting materials and metamaterials to control magnetic fields, making it undetectable.
Researchers at Penn State University have invented a method using magnetic fields to purify hybrid nanoparticles, which are composed of two or more kinds of materials. This technique will help improve drug-delivery systems, drug-targeting technologies, medical-imaging technologies, and electronic information-storage devices.
A Kaiser Permanente study of 801 pregnant women found a significant link between maternal magnetic field exposure during pregnancy and the development of asthma in their children. Women with high MF exposure were more than three times as likely to have an asthmatic child, highlighting the need for awareness about EMF health effects.
Researchers at ICN2 have developed a new technique to write magnetic data, eliminating the need for cumbersome magnetic fields and providing simple, reversible writing of memory elements. This breakthrough could lead to non-volatile MRAMs, allowing instant power-up and significant energy savings.
Researchers found that uneven temperatures in semiconductors can create electronic whirlpools and sideways magnetic fields, leading to a new effect on thermopower efficiency. The discovery could improve the efficiency of commercial semiconductor devices