Magnets and kids: A dangerous duo
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.
Magnets
Articles tagged with Magnets
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Harnessing magnetic vortices for making nanoscale antennas
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.
Ames Lab researchers see rare-earth-like magnetic properties in iron
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.
MRI, on a molecular scale
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.
Recovering valuable substances from wastewater
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.
Magnet hospitals have higher quality of care, NYU researcher finds
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.
Relativity shakes a magnet
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 a small but powerful magnet
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.
Teaching matter waves new tricks: Making magnets with ultra cold atoms
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.
Magnetic nanoparticles could aid heat dissipation
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.
Levitating foam liquid under the spell of magnetic fields
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.
LSUHSC's Noel recognized nationally for outstanding achievement
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.
Supermagnets present ongoing child health risks
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.
Making a better, cheaper green-energy magnet
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.
Surprisingly simple scheme for self-assembling robots
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.
From cancer treatment to ion thruster
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.
Memory breakthrough could bring faster computing, smaller memory devices and lower power consumption
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.
Children and magnets have a dangerous attraction, end up in the ER
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.
Steering stem cells with magnets
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.
Increased NMR/MRI sensitivity through hyperpolarization of nuclei in diamond
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.
A quantum simulator for magnetic materials
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.
New research identifies risks, interventions for children's GI health
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.
Stanford ultraresponsive magnetic nanoscavengers for next generation water purification
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.
Magnetic vortex antennas for wireless data transmission
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 achieve lower mortality, reports Medical Care
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.
New NIST microscope measures nanomagnet property vital to 'spintronics'
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 create nanoscale spinning magnetic droplets
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.
Magnet ingestion by young children serious and growing problem
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 rolls out its clean energy tech at ARPA-E
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 find new order in quantum electronic material
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.
Learning and memory may play a central role in synesthesia
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.
Point of light
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.
ARPA-e awards $130 million for transformation energy technology projects
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.
Reclaiming rare earths
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.
Fewer patient deaths after surgery in hospitals known for good nursing care
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.
Southampton physicists join search for hidden magnetic states
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.
Freezing magnetic monopoles
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.
Higgs transition of north and south poles of electrons in a magnet
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.
Magnet helps target transplanted iron-loaded cells to key areas of heart
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.
Warning to parents over magnet danger to children
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.
Quantum bar magnets in a transparent salt
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.
A SMART(er) way to track influenza
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.
Cutting-edge technologies offer improvements in screening and gastrointestinal surgery
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.
Choosing the right hospital may save your baby's life
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.
Self-sculpting sand
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.
Honeycombs of magnets could lead to new type of computer processing
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.
Magnetic field researchers target 100-tesla goal
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.
Tongue drive system goes inside the mouth to improve performance and user comfort
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.
Weightlessness weighs heavy on genes -- a fly's perspective
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.
UK scientists produce world's first magnetic soap
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.
The world's smallest magnetic data storage unit
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.
Magnetically-levitated flies offer clues to future of life in space
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.
Ames Laboratory will share in over $4.5 million in rare-earth alternatives research grants
The U.S. Department of Energy will fund two cutting-edge projects to replace rare-earth materials in magnets for wind turbines and electric vehicles. Researchers aim to develop new high-strength permanent magnets using cerium and manganese, reducing dependence on critical materials like rare earths.
Scientists observe smallest atomic displacements ever
Researchers have developed a novel X-ray technique to image atomic displacements in materials, revealing that multiferroics exhibit magnetic and electric polarization due to relative charge displacement. The discovery has significant implications for designing multiferroic materials for practical applications.
Magnetic memory and logic could achieve ultimate energy efficiency
Researchers have developed a magnetic logic circuit and memory that theoretically approach the Landauer limit, dissipating only 18 millielectron volts of energy per operation. This represents a huge reduction in energy consumption for electronics, potentially revolutionizing computing.
Chameleon magnets: Ability to switch magnets 'on' or 'off' could revolutionize computing
Researchers discover a material that can transform from nonmagnetic to magnetic at room temperature, enabling the creation of chameleon magnets. These materials have the potential to revolutionize computing by providing tunable and reprogrammable transistors.
Scientists looking to burst the superconductivity bubble
New research reveals that bubbles in the fabrication process of high-temperature superconductor Bi2212 limit its critical current density, blocking connectivity and reducing electrical resistance. Densification of filaments before melting could help eliminate bubble formation and improve material performance.
Good eggs: NIST nanomagnets offer food for thought about computer memories
Researchers at NIST created nanomagnets with egg-like shapes to study their effects on magnetic properties. The shape distortions led to complex wave patterns and frequency shifts, which can be harnessed for developing more reliable random-access memories (RAM) that reduce processor power needs.
Mini disks for data storage
Researchers created mini magnetic disks with slanted edges, which favor the formation of tiny magnetic vortices. This allows for efficient data processing and reduced power consumption compared to traditional memory storage systems.
Remote-controlled capsule endoscope safely examines the stomach
A study has demonstrated the safety and feasibility of using a magnetic maneuverable capsule to visualize the gastric mucosa in healthy volunteers. The capsule was well-tolerated and provided excellent visualization of the stomach lining, with 75% of the gastric mucosa visualized in most subjects.