Articles tagged with Magnets
Researchers have observed electrons splitting into a magnet and an electrical charge in quasi two-dimensional magnetic materials, supporting the theory of high-temperature superconductivity. This phenomenon was previously thought to occur only in one dimension.
Cuprate superconductors exhibit unique properties, including high-temperature superconductivity and magnetic behavior. Researchers at EPFL used Resonant Inelastic X-ray Scattering to study the electronic structure of cuprates, finding that spin interactions play a crucial role in their superconducting state.
Researchers at Technical University of Munich have demonstrated a new kind of building block for digital integrated circuits using 3D arrangements of nanometer-scale magnets. The 'majority logic gate' can serve as a programmable switch in a digital circuit, with potential applications in ultralow-power and high-density computing.
Researchers from NC State University have developed a titania-based material that can effectively insulate superconducting magnets, allowing for the preservation of electrical pathways and efficient heat dissipation. This breakthrough has significant implications for next-generation power generation technologies and medical devices.
A team of engineers has created a portable device for nuclear magnetic resonance (NMR) spectroscopy using minuscule chips, reducing the footprint for multidimensional analysis of molecules. The devices can operate accurately over a wide temperature range and may be assembled into a massively parallel array to accelerate analysis of com...
NASA's Goddard Space Flight Center team has demonstrated that electrostatically actuated microshutter arrays are as functional as magnetically activated arrays, eliminating macro-moving parts and lowering voltage needs. This advancement makes them suitable for Explorer-class missions and larger fields of view.
MIT researchers have developed a new theory that suggests refrigerators could use magnets as cooling agents by exploiting the thermoelectric effect of magnons. Theoretical calculations predict that magnons can carry heat from one end of a magnet to another, producing a cooling effect.
Physicists at Weizmann Institute of Science measure magnetic interaction between two single electrons by binding their spins in opposite directions. The measurements reveal that the electrons interact like regular bar magnets, with north poles repelling and rotating until they draw near.
Researchers at NIFS have successfully fabricated a large-scale magnet conductor using a novel method that stacks yttrium-based high-temperature superconducting tapes. The conductor achieved an electrical current of 100,000 amperes and a current density exceeding 40 A/mm2.
Between 2002 and 2012, magnet ingestions by children tripled in number and nearly doubled in severity, with a significant increase in high-risk injuries featuring multiple smaller magnets.
Researchers at Brookhaven National Laboratory have successfully synchronized magnetic spins in nanoscale devices to build tiny yet more powerful signal-generating or receiving antennas. The technology harnesses the power of an electron's spin, opening doors for novel types of antennas and electronics.
Scientists at Ames Laboratory have observed magnetic properties typically associated with rare-earth elements in iron, when positioned between two nitrogen atoms. This discovery opens the possibility of using iron to provide both magnetism and permanence in high-strength permanent magnets.
Scientists at Harvard University have created a magnetic resonance imaging (MRI) system that can produce nano-scale images, potentially allowing researchers to peer into the atomic structure of individual molecules. The system uses a miniaturized magnet and quantum computing technology to achieve high spatial resolution.
Researchers have developed a technology to recover phosphorus from wastewater using superparamagnetic particles. The particles trap phosphate anions, which can then be removed using magnets, leaving water clear of pollutants. This innovative method has the potential to protect the environment and provide a sustainable raw material source.
Research from NYU College of Nursing reveals that Magnet hospitals have superior practice environments, which lead to higher nurse-reported quality of care and better patient outcomes. The study found a positive correlation between positive work environments and excellent quality of care in both Magnet and non-Magnet hospitals.
Researchers from Mainz University demonstrated a new physical phenomenon that manipulates magnet states using electric signals. This breakthrough combines the merits of charge-based and spin-based devices, paving the way for new generation memory devices.
RAMBO allows researchers to run spectroscopy-based experiments in pulsed magnetic fields of up to 30 tesla on a tabletop. The device enables direct optical access to the sample and combines ultrastrong magnetic fields with short and intense optical pulses.
Researchers successfully created artificial magnets using quantum matter waves of Rubidium atoms. The team's innovative method mimics the behavior of traditional magnets, allowing for clearer understanding and potential applications in fields like data storage and medical instrumentation.
Researchers at MIT have discovered a way to boost heat transfer using magnetic nanoparticles, which could lead to more efficient cooling systems. The system relies on a slurry of tiny magnetite particles that are attracted to the heated surface by magnets, resulting in significantly improved heat transfer.
Researchers Nathan Isert and colleagues use diamagnetic levitation to study coarsening behavior of foams with varying liquid fractions. They experimentally verify decades-old theoretical predictions for bubble size growth in dry and liquid foams.
Dr. Noel's landmark study with the North American Society for Pediatric Gastroenterology, Hepatology and Nutrition documented a drastic increase in cases of kids swallowing powerful neodymium magnets. His work led to recalls, lawsuits, and increased awareness about the dangers of these magnets.
A recent study by Canadian researchers found a significant increase in magnet-related ingestions among children, with multiple magnet ingestion rates increasing most in the last three years. The powerful magnets are up to 10 times stronger than traditional magnets and remain available online despite product recalls.
Researchers at Case Western Reserve University have developed a new eco-friendly material for better power-converting magnets in wind turbines and electric cars. The material reduces neodymium-iron-boron production costs from $60 per kilogram to around $10 per kilogram, improving the magnetic remanence of the resulting magnets.
The MIT researchers' new system of self-assembling robots uses a surprisingly simple scheme to overcome the complexity of traditional modular robot designs. By giving up on static stability and leveraging clever engineering, they create cubes that can climb, roll, and even move while suspended upside down.
Researchers at Michigan Technological University have developed a new type of micro rocket engine using ferrofluids, which could enable efficient propulsion for nanosatellites. The thrusters use electrically sprayed fluid to produce thrust, with the ferrofluid forming a stationary pattern of sharp tips that can spray jets of fluid.
Researchers at Hebrew University of Jerusalem developed magnetless spin memory, allowing for miniaturization of memory bits to single nanoparticles. This technology could lead to universal memory-on-chip production with high density and low power consumption.
Cases of children ingesting magnets led to a quintupling of incidents between 2002 and 2011. Ingestion of multiple magnets resulted in more severe outcomes, including emergency surgery.
Scientists at Emory Health Sciences have developed a method to steer mesenchymal stem cells using magnets, which could potentially be used to treat cardiovascular diseases. The nanoparticles used in this study are FDA-approved for MRI purposes and protect the cell from damage.
Researchers at Berkeley Lab have developed a technique to hyperpolarize carbon-13 nuclear spins in diamond, enhancing NMR/MRI sensitivity by many orders of magnitude. This method uses a low-strength magnetic field and is applicable to various applications, including molecular detection and quantum information processing.
Physicists at ETH Zurich have developed a new device that uses laser beams and atoms to emulate magnetic materials, enabling the study of exotic forms of magnetism. The approach promises groundbreaking insights into the properties of magnetic materials.
A study found that obese children have a unique breath pattern linked to potential complications like diabetes and fatty liver disease. Another study identified high-powered magnets as a common cause of severe digestive damage in children, requiring surgical interventions.
Researchers at Stanford University have created a new type of nanoscale particle that can decontaminate tainted water and be easily recovered with a magnet. The 'synthetic antiferromagnetic cores' are ultraresponsive to magnetism, allowing for efficient collection of nearly all particles.
Researchers have discovered a new way to create stable three-dimensional magnetic vortices in nanometer-scale systems, which can be used as antennas for wireless data transmission. The discovery could lead to improved performance and stability in applications such as mobile communications and Wi-Fi.
Magnet hospitals demonstrate improved patient outcomes through investments in nursing education and work environment. Lower mortality rates and reduced failure-to-rescue rates are attributed to Magnet designation.
Researchers at NIST developed a new microscope that measures collective dynamics of electrons' spins in individual nanomagnets as small as 100 nanometers. This enables the study of spin relaxation process and can help design spintronic devices with reduced energy consumption.
Researchers at North Carolina State University have successfully created a magnetic soliton – a nano-sized, spinning droplet that preserves its size and momentum. The discovery has significant implications for the development of spin-based computers.
The dangers of magnet ingestion in young children are becoming increasingly apparent, with high-powered magnets causing life-threatening problems like bowel perforations. Effective recognition, prompt management, and targeted campaigns can help mitigate these risks through primary prevention and multidisciplinary collaboration.
PNNL researchers are developing a range of innovative clean energy technologies, including thermal energy storage that can store solar heat for up to 10 times longer than traditional molten salts. Additionally, the lab has created lightweight fuel tanks for compressed natural gas vehicles and rare earth-free magnets for electric motors.
Rutgers physics professors have discovered a new type of order in an exotic uranium-based material, which may lead to enhanced computer displays and data storage systems. The 'hastatic' order could also enable the creation of more powerful superconducting magnets for medical imaging and high-speed transportation.
A new study published in Psychological Science suggests that color-grapheme synesthesia is linked to childhood exposure to magnetic colored letters, which triggered the formation of specific, automatic color-letter pairings. These findings indicate that learning and memory play a central role in the development of true synesthesia.
Researchers at Caltech developed a new waveguide that channels light and focuses surface plasmon polaritons to achieve nanoscale precision. The device has the potential to revolutionize biological imaging and computer storage by allowing for high-resolution maps of molecules and increased memory capacity.
The Energy Department's Advanced Research Projects Agency – Energy (ARPA-E) has selected 66 cutting-edge research projects to receive $130 million in funding. These projects focus on transformational, breakthrough technologies that can produce game-changing breakthroughs in energy technology and have large commercial impacts.
Scientists at Ames Laboratory successfully remove neodymium and other rare earths from commercial magnets, maintaining useful properties. The new process aims to produce high-purity alloys for future applications.
A study of 564 US hospitals found patients treated in magnet hospitals had a 14% lower risk of death after surgery. Magnet hospitals are recognized for high-quality patient care, nurse education, and innovation, leading to better outcomes.
Physicists from the University of Southampton used Diamond Light Source's new I10 Beamline to search for 'hidden magnetic states' in exchange-spring magnets. They have identified at least three different classes of these states, which could provide important confirmation of a theoretical model.
Researchers have created a framework for stabilizing magnetic monopoles, which could lead to breakthroughs in data storage. The discovery was made possible by studying spin ice materials at low temperatures, where frustration among magnetic atoms leads to the formation of unpaired poles.
Scientists at RIKEN have observed a Higgs transition of north and south poles of electrons in a magnet, Yb2Ti2O7, transitioning from fractionalized to stable monopoles. This discovery has significant implications for spintronics, as it enables the creation of dissipationless current.
Researchers used magnets to guide iron oxide nanoparticles-laden cells to damaged heart sites, improving homing and retention. Visualizations revealed a good correlation between MRI tracking and cell fate assessment.
Magnetic toys with small, detachable parts pose a significant risk to young children's health. When multiple magnets are ingested, they can trap internal soft tissues and cause fistulas, leading to serious illness if left untreated. Parents are advised to be vigilant when giving their children such toys.
Researchers from UCL and EPFL have successfully created a material that mimics the behavior of traditional bar magnets, but at the quantum level. By manipulating the spins of tiny atoms in a transparent salt, they achieved an antiferromagnetic configuration, similar to large bar magnets, without the usual complications.
Brown University engineers create a biochip called SMART that can detect influenza by identifying specific RNA sequences and separating them from other biological debris. The device is small, low-cost, and fast, making it potentially useful in first-aid kits.
Studies presented at DDW 2012 explored new high-definition colonoscopes, self-assembling magnets for endoscopic bypass, and capsule endoscopes. These innovations showed increased accuracy and decreased cost or invasiveness of procedures, with potential benefits including reduced costs and fewer complications.
Research found that babies born in Magnet-credentialed hospitals had lower odds of death within the first week of life, infection, and brain hemorrhage. These hospitals have been shown to provide higher quality care for very low birth weight infants, who account for more than half of all infant deaths.
Researchers at MIT's DRL have developed algorithms that could enable smart sand to assemble itself into large-scale replicas of models, using a subtractive method and minimizing computational resources. The system uses electropermanent magnets and microprocessors to communicate and share power among grains.
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.
Scientists at Los Alamos National Laboratory successfully produced a 100.75-tesla magnetic field, exceeding the world record, using a novel pulsed magnet system. The achievement paves the way for studying quantum behavior under high magnetic fields and exploring new materials.
The Tongue Drive System, a wireless device that enables people with high-level spinal cord injuries to control computers and wheelchairs with their tongues, has been improved by embedding sensors in a dental retainer. This allows for increased mechanical stability and comfort, making it nearly unnoticeable.
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.
Researchers at the University of Bristol developed a magnetic soap composed of iron-rich salts, which levitates through an organic solvent when exposed to a magnetic field. The soap's properties were confirmed using neutron scattering, and its potential applications include environmental clean-ups and industrial cleaning products.
Researchers from IBM and CFEL built a nanometre data storage unit with 96 atoms, storing a byte in as few as 8 pairs of atom rows. The device uses antiferromagnetism to pack bits closer together, enabling higher storage density.