Articles tagged with Magnetic Fields
Researchers at HZDR propose a new mechanism linking planetary tidal effects to the Sun's dynamo, which could drive the 11-year solar cycle. The theory suggests that small forces from Venus, Earth, and Jupiter can initiate oscillations in the alpha effect, leading to polarity reversals.
A new study by USC scientists has mapped the electric current induced by transcranial direct current stimulation (tDCS) in the human brain. The research provides solid data to develop science-based treatments for neurological and psychiatric disorders, including depression and chronic pain.
A new study at Duke University reveals that applying a tiny force to the Piezo1 receptor can change its behavior while it's already activated. The researchers used magnetic fields and nanometer-sized beads to manipulate the protein, which sits on cell membranes and plays a crucial role in sensing forces surrounding cells.
Researchers found that even slight deviations from the ideal crystal structure significantly alter the display of the magnetocaloric effect. The study revealed previously unknown features of phase transition and deepened understanding of the causes of the giant MCE.
A team of Russian physicists developed a method to use the magnetocaloric effect for targeted drug delivery to implants, avoiding rejection. The technique involves applying an external magnetic field to lower the temperature of a magnetic material, releasing a controlled dose of medication at the implant site.
Drexel researchers create chains of microscopic magnetic bead-based robots that can swim at impressive speeds through a microfluidic environment. The team demonstrates their ability to link and unlink the beads using a rotating magnetic field, paving the way for targeted medicine delivery and minimally invasive surgery.
Researchers have developed a magneto-optic Q-switched laser using a 190-micron-thick magnetic garnet film with labyrinth-shaped magnetic domains. The device achieved optical output with a pulse width of tens of nanoseconds, increasing pulse power by 1,000 times.
Researchers have discovered that asymmetrical magnetic microbeads can be transformed into useful tools controlled by a changing external magnetic field. The Janus particles, inspired by the Roman god of two faces, exhibit unique behavior under oscillating fields, forming linear chains and expanding to create micro-muscles on a chip.
Scientists have successfully realised qubits in a novel form, leveraging electron holes to overcome interference issues. This breakthrough offers potential improvements in programming and reading quantum bits for future quantum computers.
Researchers have detected spiraling plasma around a magnetic field in the active nucleus of galaxy Cygnus A, providing insights into the cosmic monster's influence on its surroundings. The observations also confirm that the plasma is highly confined by the effect of the magnetic field.
Researchers have developed an optical magnetic field sensor that can detect ultra-small magnetic fields from the nervous system. The sensor uses a gas of caesium atoms and measures electrical impulses without contact, offering new possibilities for medical diagnoses.
Researchers have discovered a super-fast rotating, ultra-cool brown-dwarf star, measuring its rotational period with bursts of radio waves detected by the Arecibo telescope. This groundbreaking detection reveals new insights into the internal dynamics and magnetic field generation in these objects.
Researchers developed a new analysis method using magnetic fields to quickly measure aluminum concentration in tap water. This can lead to more efficient and environmentally-conscious coagulants for water treatment.
Scientists have reached a milestone in replacing the standard kilogram with a fundamental constant of nature, measuring Planck's constant for the first time. The new watt balance device has an uncertainty of only 34 parts per billion, a step closer to redefining the kilogram.
Using miniature EPMs, researchers achieved forces up to 70 nN and displacement velocities up to 300 μm/s on water droplets. The study has potential applications in single cell manipulation and analysis using droplet microfluidics.
Astronomers discovered that magnetic instabilities in black hole jets determine their fate. Powerful jets can punch through surrounding gas into intergalactic space, while unstable ones fall apart and deposit energy within the galaxy.
Researchers at CWRU create a way to control electron spins at room temperature using a magnetic vortex. The technology offers a possible alternative strategy for building faster and more powerful quantum computers. By coupling the vortices with diamond nanoparticles, they can manipulate individual electron spins in nanoseconds.
A new spintronics-based system has been developed, offering improved performance over conventional heat-assisted magnetic recording materials. The DyCo5 nanostructures demonstrate a lower writing temperature and higher stability of magnetic bits, enabling faster and more energy-efficient data storage.
Researchers have used radical pair analysis to enhance the performance of cryptochrome-based magnetic compass sensors, finding that electron spin relaxation can improve sensitivity. The study's findings could lead to the development of low-cost and environmentally-friendly electronic devices capable of detecting weak magnetic fields.
Scientists develop new method to control magnetic particles of two distinct sizes suspended in liquid, forming channels that drive small particles along, improving sorting and lab-on-a-chip device functionality.
A team of scientists developed a theoretical model explaining the high values of linear magnetoelectric effect in BiFeO3. The effect can enhance materials for industrial applications and control magnetic properties with electric fields.
The MMS mission has detected the source of magnetic reconnection, a process converting stored magnetic energy into kinetic energy and heat. The spacecraft measured plasmas and observed evidence of reconnection, including accelerated electrons and a strong electrical current.
Astrophysicists have observed a distant star in Andromeda with a different positioning of sunspots, indicating a magnetic field driven by unique internal dynamics. The star's rapid rotation creates a powerful magnetic field, resulting in asymmetrical distribution of sunspots on its surface.
Researchers discovered unique starspots on nearby star Zeta Andromedae, differing significantly from the Sun's spots. The findings offer a rare glimpse into the Sun's infancy and challenge current theories about star magnetic fields.
Scientists have developed a new method to image magnetic fields on the nanometer scale at temperatures close to absolute zero. They used quantum sensors in diamond-based microscopes to achieve unrivalled precision in measuring magnetic fields in superconductors.
A Princeton graduate student has developed a program that helps stabilize fusion plasmas, reducing instabilities that decrease tokamak efficiency. The new method uses feedback from sensors for real-time control of plasma rotation and fuels fusion reactions.
Researchers found that applying a magnetic field to PdCoO2, a non-magnetic metal, increases its electrical conductivity and reduces resistance. The phenomenon was linked to the material's layered crystal structure and topological characteristics.
Researchers create thin films of a copper-oxide compound to study its electronic behavior at near absolute zero. They find that decreasing doping levels or increasing magnetic fields suppresses superconductivity, while Hall resistivity measurements reveal quantum fluctuations and electronic memory.
The team discovered a new plasma wave phenomenon leading to the development of a negative ion source for fusion plasma heating. The newly developed plasma source utilizes a helicon wave to produce high-temperature electrons, which are then neutralized and injected into the magnetically-confined plasma core.
Researchers at Saarland University are developing intelligent roller conveyor systems that can adapt to changing conditions and detect faults, improving production efficiency. The system uses advanced sensor technology to analyze motor data and adjust its performance in real-time.
Researchers have developed a new framework to understand the evolution of sun-like stars, which can help determine their age with more precision. The model predicts that younger stars will vary significantly in x-ray emission intensity, but convergence occurs after a certain age, making them more predictable.
A new study at Rockefeller University uses magnetic forces to control neurons in mice, finding the brain plays a vital role in glucose metabolism. By targeting specific cells, researchers can activate or inhibit neural activity, offering potential therapeutic applications for metabolic and neurologic diseases.
Researchers have created tiny particles that can be precisely controlled by magnetic fields and generate electric fields, revolutionizing medicine and regenerative therapy. These 'Janus' particles can target cancer cells with precision and efficiency, eliminating side effects.
The study proposes a technique to increase the number of electrons trapped in the wake of the laser pulse, improving beam quality. This could lead to better technology for future accelerators and bring high energy physics experiments to more labs and universities.
Andrea Young's grant will support the development of nano-SQUID-on-tip, a device that measures thermal, magnetic, and topographic properties of materials. This tool enables correlation of physical and magnetic structure on relevant length scales, crucial for nanoscale device performance.
Researchers at UVA University have successfully used a synthetic gene to manipulate the behavior of mice and zebrafish by applying magnetic fields. The breakthrough could lead to new treatments for neurological diseases such as schizophrenia and Parkinson's disease.
A new study uses IBEX data to determine the strength and direction of the interstellar magnetic field beyond the solar system, providing insight into the galaxy's magnetic forces. The findings are based on simulations that correctly predict the locations of neutral ribbon particles and agree with Voyager 1 measurements.
Researchers successfully experimented with chiral magnetic materials that show a unique magnetic twisting effect triggered by weak external magnetic fields. This leads to the development of new types of magnetic memories with unprecedented storage capacities, up to 10 million times larger than conventional magnetic storage memory devices.
Scientists have discovered a way to generate very low-resistance electric current in zirconium pentatelluride, a semi-metallic material. The discovery relies on the separation of right- and left-handed particles, creating a powerful electric current.
Researchers have discovered Landau levels on atomically flat surfaces without asymmetries, supporting the domain model for non-magnetic field generation. The study reveals unique properties of graphite-based carbon materials, such as graphene, for electronic devices and catalysis.
Researchers at HZDR have developed a method for controlling the propagation of spin waves in a targeted and simple way, creating a basis for nanocircuits that use spin waves. This approach uses magnetic domain walls and small external magnetic fields to manipulate the course of spin waves, enabling efficient information processing.
Scientists use real-time observations and computer simulations to analyze the solar corona's dynamic system. The sun's magnetic field drives space weather on Earth and affects interplanetary radiation. Understanding its structure is crucial for studying space throughout the solar system.
The PPPL team will investigate the formation and growth of magnetic fields using the Titan Cray XK7 supercomputer, with the goal of understanding processes like Weibel instabilities and explosive magnetic reconnection. The research will also inform experiments at the National Ignition Facility.
Researchers have successfully created and observed knotted solitary waves, or knot solitons, in a quantum field. The discovery opens up new avenues of study for understanding the properties of quantum mechanics and its potential applications in fields such as cosmology and quantum computers.
Researchers have developed an entirely new form of digital memory using antiferromagnets, which can be controlled with electrical pulses. This technology has the potential to increase storage density, reduce energy consumption and improve speed.
The PPPL-designed scraper element will help physicists explore various magnetic field arrangements and plasma currents in the W7-X stellarator. The component intercepts heat from fusion reactions, reducing the risk of damage to the divertor and stellarator equipment.
Microbots are controlled using individual magnetic fields from an array of tiny planar coils, allowing for independent movement and cooperative manipulation tasks. This technology aims to enhance manufacturing and biomedical research applications.
Researchers at PPPL developed computer simulations capturing the evolution of an electric current inside fusion plasma without using a central electromagnet. The new method achieves high plasma currents by injecting radio-frequency waves and neutral beams into the plasma, showing promise for spherical tokamaks.
A team of astronomers has discovered that up to 60 percent of stars host strong magnetic fields, which can significantly alter the physical processes taking place in the core. The researchers used asteroseismology to detect these hidden fields and found that they are prevalent in intermediate mass stars.
Aging stars stop slowing down as their magnetic field interacts with a wind of particles flowing away from its surface, according to research published in Nature. This discovery challenges previous theories on stellar rotation and has implications for understanding how the Sun influences its local environment, including planets.
An international team of astronomers found strong magnetic fields are common in stars, contradicting previous assumptions. The study used data from NASA's Kepler mission to analyze over 700 red giant stars and discovered that many host internal magnetic fields up to 10 million times stronger than Earth's.
New research indicates that stars older than the Sun spin less than expected, affecting age calculations. This discovery has significant implications for understanding stellar aging and predicting future changes in our own Solar System.
Researchers have discovered 'forbidden' compounds in super-Earths that could increase heat transfer rates and strengthen magnetic fields. These compounds, formed by silicon, oxygen, and magnesium at high pressures, have different properties than normal compounds, making them important for generating powerful magnetic fields.
Researchers at Princeton Plasma Physics Laboratory have discovered a mechanism that can halt solar eruptions before they reach the Earth. This finding could improve the timing of future space missions and provide crucial insights for protecting satellites and power grids from geomagnetic storms.
Scientists discovered twisted magnetic fields in dusty disks orbiting young stars, affecting disk growth. The study used the VLA radio telescope to observe a 750-light-year-old protostar in Perseus, finding millimeter- to centimeter-sized particles in the disk.
A team of researchers from North Carolina State University has developed a technique for remotely controlling soft robots by manipulating elastic polymers with magnetic nanoparticles. By arranging the nanoparticles into parallel chains, they can control the movement and direction of the soft robots.
A study by Tohoku University researchers has clarified how external driving forces, such as magnetic fields and electric currents, affect magnetic structures. The findings suggest that the actions of these forces on the structure are fundamentally different.
Researchers at Berkeley Lab and UC Berkeley demonstrate record-breaking NMR/MRI signal sensitivity through hyperpolarization of carbon-13 nuclei in diamond. The technique enables orders of magnitude sensitivity enhancement for NMR studies under ambient conditions.
Researchers found that water ions escape from Saturn's magnetosphere at a reconnection point, where magnetic fields disconnect and reconnect. This discovery helps scientists understand the physics of rapid rotators like Jupiter and how they expel materials.
Researchers have discovered high levels of polarization in radio emissions from Sagittarius A*, providing proof that strong horizon-scale magnetic fields exist. This finding has significant implications for our understanding of black hole growth and the nature of gravity.