Articles tagged with Magnetic Fields
Cornell researchers have discovered a new method for measuring current-induced torques in nonvolatile magnetic memory devices, which can write information without using magnetic fields. This breakthrough aims to improve the efficiency of these devices by reducing the need for large currents and thick wires.
A team from Montana State University solved the mystery of missing sunspots from 2008 to 2010, which coincided with unusually weak magnetic fields at the sun's poles. The discovery allows for the prediction of space weather, influencing technology in space and on Earth.
Computer simulations suggest that changes in plasma flow within the Sun, which resembles ocean currents, contribute to prolonged solar minima. The team discovered that a faster flow during the first half of the solar cycle can lead to an extended period without sunspots and weak polar magnetic fields.
Researchers discovered that migrating sea turtles rely on a combination of two magnetic parameters: inclination and intensity. By detecting these variations, the turtles can extract more information from the Earth's field than initially apparent.
Researchers used NASA's THEMIS spacecraft to track energetic particles in Earth's magnetic atmosphere during a substorm, gaining insights into their origin and behavior. The study supports the betatron acceleration model, which explains how electrons gain energy from changing magnetic fields far from the reconnection site.
Researchers at NIST found that layering graphene on a substrate transforms its properties, creating hills and valleys that hinder electron mobility. The study uses a scanning tunneling microscope (STM) to investigate graphene's ideal properties in real-world conditions.
A study by Dini et al. investigates the effect of 6 mT Static Magnetic Field (SMF) on phagocytosis in human macrophages, finding that it depends on the degree of macrophage differentiation. The results suggest that moderate intensity SMF can modify cell surface morphology and influence fluid-phase endocytosis and phagocytosis.
Researchers have developed a new technique using rotating light to observe nuclei indirectly via orbiting electrons, providing complementary information to conventional NMR. This method uses Optical Faraday Rotation and can magnify the signal by creating a long optical path in a short tube.
Astronomers have detected the first magnetic field in a protostar jet, shedding light on the nature of cosmic jets. This finding suggests that all types of jets originate from a common process.
Researchers at Princeton Plasma Physics Laboratory have made significant progress in reducing thermal plasma-wall interaction challenges for fusion energy devices. A new 'snowflake' divertor concept successfully reduced plasma-material interface heat load and erosion, extending component lifetime.
Researchers at MIT have made a major step forward in fusion energy by studying the plasma edge. By reducing the steady-state power conducted to the wall, they have found that redistributing exhaust power through impurity radiation is a viable option for future fusion reactors.
A team of astrophysicists has observed dramatic flares and bursts of energy from a weakly magnetized, slowly rotating pulsar, challenging the understanding of how these events occur in normal, low-field neutron stars. The discovery indicates that internal magnetic fields may be responsible for powering these phenomena.
Scientists are studying how landmass shape affects Arctic sea ice extent, estimating rainfall interception in rainforests, and measuring mountain building rates. Landmass geometry influences Arctic sea ice growth, while forest canopy evaporation accounts for significant water resources loss. Researchers also investigate fault zone resp...
Researchers have discovered a new phenomenon in graphene where electrons split into unexpected energy levels when exposed to extreme conditions. The discovery raises questions about the fundamental physics of graphene and its potential for powerful applications.
SOFIA's infrared telescope will study the Milky Way's galactic center, detecting heat radiation not visible to human eyes. The mission aims to understand star formation in the presence of a supermassive black hole.
Scientists at Rutgers University discovered a material where an electric field controls the overall magnetic properties, leading to ultra-dense data storage. The effect could revolutionize small-scale magnetic bits and potentially lead to more dense storage devices than current terabyte discs.
The study found that energy states follow contours of constant electric potential, creating energy gaps within isolated patches on the surface. These gaps are due to a subtle interaction with the substrate, which consists of multilayer graphene grown on a silicon carbide wafer.
Researchers have created giant pseudo-magnetic fields in graphene by applying the right amount of strain, revealing a new window into fundamental scientific discoveries and potential applications. The findings, published in Science journal, exceed the strongest magnetic fields ever sustained in a laboratory setting.
Researchers at IceCube observatory discover unusual pattern in cosmic ray data, shedding new light on interstellar magnetic fields and possible sources of high-energy cosmic rays. The finding provides a significant boost to physics and astronomy studies, ruling out some proposed theories about the source of Northern Hemisphere anisotropy.
Researchers at Rice University discovered that strong magnetic fields can transform highly conductive carbon nanotubes into semiconductors. By applying a magnetic field, a band gap opens up and the material becomes an insulator.
Physicists at the University of Innsbruck suggest that ball lightning observations may be caused by phosphenes induced in the brain by strong magnetic fields. These fields can produce sensations such as noises or smells and are similar to transcranial magnetic stimulation (TMS) used in clinical practice.
New images reveal electrons flowing primarily along crystal grain boundaries, providing clues to the origin of superconductivity in pnictides. The discovery may help physicists develop better high-temperature superconductors that could save energy and enable innovative applications.
The NIST-developed Phannie phantom is a plastic sphere filled with water-bathed grids of small magnetized spheres. It allows for accurate calibration of MRI machines, improving image quality and reliability. The phantom will help reduce medical costs by enabling consistent tumor measurements across patients and scanners.
Researchers successfully delivered paclitaxel using magnetically guided nanoparticles to treat rat arteries, achieving better results at lower doses than conventional therapy. The technique has potential for treating patients with vascular disease and offers opportunities for varying treatment doses and repetition.
Researchers at Brown University have observed a quantum-level phenomenon where electrons form odd, fluctuating magnetic waves in superconducting materials. These waves are promoted by superconductivity and disappear when more magnetic energy is applied.
A new experiment has confirmed that a levitating magnet can create a dense plasma, a crucial step in achieving fusion reactions. The findings offer a potential new path to fusion energy, which could provide a long-term solution to the planet's energy needs without contributing to global warming.
A team of solar physicists has developed a revised model explaining the unexpected 'ribbon' of bright emission observed by NASA's IBEX mission. The new effect, known as the magnetic mirror effect, suggests that charged particles orbiting magnetic field lines can be recycled and detected by IBEX.
Scientists have discovered that the Milky Way's magnetic field is significantly stronger than initially believed, with a strength of at least 10 times greater than the rest of the galaxy. This finding has important implications for various astronomical data calculations and theories, including star formation and cosmology.
Researchers have developed a new technology called 'T-rays' that can penetrate through opaque dry materials without causing harm. This breakthrough could lead to new security measures, such as detecting weapons or drugs concealed on a human body, as well as medical applications, including material studies and biology.
A Yale University team developed a method to rapidly manipulate and sort cells in blood using magnetizable liquids. This technique could dramatically improve the speed and sensitivity of tests for cancer biomarkers, blood disorders, viruses, and other diseases.
Rice University Professor Junichiro Kono and his team discovered a plasmonic material that can either stop or let through terahertz beams with adjustments to temperature and/or magnetic field. This finding helps close the knowledge gap in the electromagnetic spectrum between electronic and photonic devices.
Researchers used laser light to create synthetic magnetism in neutral atoms, allowing for unprecedented control over quantum systems. This breakthrough enables the study of phenomena such as electrons in magnetic fields and has potential applications in quantum computing and information science.
JQI researchers have created 'synthetic' magnetic fields for ultracold gas atoms by tricking them into behaving like electrically charged particles. This demonstration paves the way for studying the complex natural phenomena involving charged particles in magnetic fields and may contribute to an exotic new form of quantum computing.
Researchers propose EIT wave analysis as an alternative approach to measure the solar coronal magnetic field. They demonstrated that the profile of EIT wave propagation velocity can be utilized to probe the coronal magnetic field, potentially unveiling the nature of solar flares and CMEs.
A new time-lapse movie shows the birth of massive stars in Orion's Great Nebula, revealing signs of rotating accretion disk and outflow streams. The data suggest magnetic fields may play a crucial role in star formation.
The SUNRISE balloon-borne telescope has delivered images showing the complex interplay on the solar surface with unprecedented detail. The mission reveals a connection between magnetic field strength and solar brightness, with implications for Earth's heat input.
Scientists confirm ultra-thin coating of carbon on neutron star using Chandra's X-ray spectrum and theoretical models. The discovery resolves a ten-year mystery surrounding the object, explaining its lack of pulsations.
Researchers observed the onset and stagnation of 3D magnetic reconnection in a lab experiment. The study reveals unexpected features not considered in 2D models, including asymmetric reconnection fields and forces.
Researchers have developed a new method of mixing tiny liquid volumes using magnetic particles suspended in a fluid, creating 'vortex field' stirring effects. The technique shows promise for mixing fluids in complex spaces and could lead to improved sensor sensitivity.
Researchers at NIST and University of Maryland have found that radio-frequency waves can influence atomic collisions in rubidium atoms, allowing for finer control over their interactions. This discovery could lead to the creation of exotic states of matter and more complex arrangements of ultracold atoms.
The IBEX spacecraft reveals a 'ribbon' of intense emissions controlled by galaxy's magnetic fields, forcing scientists to reconsider basic assumptions about the heliosphere. This discovery may impact Earth's history and pose hazards to astronauts as galactic radiation levels change.
Scientists at Lawrence Berkeley National Laboratory's Accelerator and Fusion Research Division are making progress with their Neutralized Drift Compression Experiment-II (NDCX-II) accelerator, a specialized user facility designed to study warm dense matter. The NDCX-II can deliver high currents in short pulses of moderate energy, heati...
Researchers have detected a surge in galactic cosmic rays, reaching a Space Age high, attributed to the solar minimum. The increase poses a risk for astronauts and satellite systems, requiring re-evaluation of radiation shielding.
Researchers at Duke University have developed a novel class of Janus particles that can be controlled in six degrees of freedom. This breakthrough allows for precise manipulation of the particles' positions and orientations, opening up possibilities for various applications, including electronic paper and self-propelling micromachines.
Researchers have created a way to manipulate single qubits without affecting neighboring information, enabling the development of more reliable quantum computers. The new approach uses polarized light to create effective magnetic fields, simplifying the process of addressing individual qubits.
Researchers at the University of Michigan have discovered a method to prolong quantum bit memory by utilizing lasers. By exciting the quantum dot with a laser, scientists were able to block magnetic field interactions and stabilize the magnetic field, resulting in a significant increase in stable existence of the quantum bit.
New studies by NIST scientists show that changing the shape of cobalt nanoparticles from spherical to cubic fundamentally changes their behavior. The research reveals distinct differences in how these particles interact under external magnetic fields and when exposed to heat.
Researchers have fabricated microscopic polymer beads that change color instantly in response to external magnetic fields. The beads exhibit excellent structural stability and are compatible with various dispersion media, allowing for tunable colors in different chemical environments.
Astronomers use ESA's XMM-Newton and Integral space observatories to study a magnetar outburst from the rare 'dead' star SGR 0501+4516. The outburst lasted over four months and released hundreds of smaller bursts, providing valuable insights into extreme matter conditions.
A team of astronomers led by Nanda Rea used European Space Agency satellites to study the eruptions of a rare magnetar, SGR 0501+4516. The object underwent hundreds of small bursts over four months, emitting high-energy X-rays during its outburst phase.
Researchers have successfully created a rotating molecular rotor on a gold surface, creating an off-axis rotation that mimics the property of machines like electric motors and generators. This breakthrough has significant implications for the development of machines for generating currents at small scales.
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.