Articles tagged with Magnetometry
Researchers have developed compact diamond magnetometers that measure biomagnetic signals with high precision, opening new avenues for medical diagnostics. The technology offers improved paths towards early detection of conditions such as myocarditis and epilepsy.
A new magnetic measurement system can reproduce the actual operating environment of next-generation power electronics devices by capturing complete M-H loops up to saturation. The system enables quantitative measurements under high-frequency (MHz-band) and high-field conditions, closely matching real device operation.
Researchers developed a precision magnetometer based on magneto-optic material that changes optical properties in response to a magnetic field. The device can detect magnetic fields comparable to those of high-performance cryogenic magnetometers, but with minimal size, weight and power consumption.
Researchers at Virginia Tech's Fralin Biomedical Research Institute are developing tools to gather high-quality brain function data during infancy, enabling studies on brain development and potential risk factors for disorders. The study aims to capture real-time brain activity during natural social interactions.
The SwRI-built Solar Wind Plasma Sensor (SWiPS) and Space Weather Follow-On Magnetometer (SWFO-MAG) will capture real-time data on solar wind and magnetic field changes to monitor space weather phenomena. This data will support NOAA's Space Weather Prediction Center and help predict potential impacts on Earth's magnetic field.
Researchers at the University of Warwick have developed a handheld diamond magnetometer for cancer surgery, which uses magnetic tracer fluid to detect tumours. The device is ultra-sensitive and compact, offering a non-toxic alternative to traditional methods, such as radioactive tracers or blue dye.
A team of physicists has developed a new quantum sensor that can detect vectorial magnetic fields with large dynamic range and multi-axis capabilities. The sensor is based on spin defects in hexagonal boron nitride, a two-dimensional material that offers new degrees of freedom compared to existing nanoscale sensors.
Researchers explore evaluation methods for sensitivity limits of quantum magnetometers, revealing intrinsic connections and relationships between quantum characteristics. The study advances theoretical development in quantum magnetometry and experimental optimization.
The Southwest Research Institute-led instrument measures electric and magnetic fields to characterize the lunar subsurface, shedding light on material differentiation and thermal history. The deployment marks a new era in lunar exploration, providing unprecedented insights into the Moon's composition and structure.
The virtual application laboratory provides comprehensive technical knowledge and interactive measurement scenarios for quantum sensors. Industry can interactively assess the potential of this technology for their needs, with expert knowledge available through accompanying resources.
The development of magnetometers by Southwest Research Institute will measure the interplanetary magnetic field carried by the solar wind and provide critical data for NOAA's Space Weather Prediction Center. The instruments will help mitigate space weather impacts on electrical power grids, satellite communication, and navigation systems.
The researchers combined an NV diamond with a laser diode in an optical resonator, successfully demonstrating the sensor system with two active media. This breakthrough enables high-contrast sensors to measure biomagnetic signals from the brain or heart with improved sensitivity and dynamic range.
Researchers developed a new 2D quantum sensing chip using hexagonal boron nitride that can simultaneously detect temperature anomalies and magnetic fields in any direction. The chip is significantly thinner than current quantum technology for magnetometry, enabling cheaper and more versatile sensors.
Karen Sauer is studying a tunable RF atomic magnetometer as an electrically small receiver to compensate for stray static magnetic fields. The project aims to enable the sensor's use in uncontrolled conditions, crucial for out-of-lab applications.
Researchers have developed a highly sensitive diamond quantum magnetometer that can achieve practical ambient condition magnetoencephalography. The novel magnetometer uses a single crystalline diamond to detect magnetic fields, achieving record sensitivities of up to 9.4 pT Hz-1/2 in the frequency range of 5 to 100 Hz.
Researchers at NIST have developed a method using cellphone magnetometers to rapidly and cheaply measure biomedical properties for monitoring or diagnosing diseases, including glucose levels in saliva. The technique has the potential to detect environmental toxins and measure biomarkers such as histamines with high sensitivity.
A joint USTC research group investigated the coupling effect between neutron spin and gravitational force using a high-precision xenon isotope magnetometer. The experimental results revealed that the weight difference between the neutron's spin-up and spin-down states was less than two sextillionths.
A multidisciplinary study uses magnetometers to investigate the magnetic fields of metropolitan areas, finding that each city has a distinct magnetic signature. This unique characteristic can be exploited to analyze anomalies in city operation and long-term trends of urban development.
Researchers analyzed urban magnetic fields to understand city health and provide insights for preventative studies. They discovered differences between Berkeley and Brooklyn, with Berkeley reaching near-zero magnetic activity at night.
Researchers have developed a novel magnetometer that achieves an unprecedented level of sensitivity, detecting tiny magnetic fields that were previously undetectable. The breakthrough uses a single-domain Bose-Einstein condensate made of rubidium atoms at ultracold temperatures.
A worldwide network of optical magnetometers failed to detect dark matter signals over a one-month continuous operation. The researchers were able to formulate constraints on the characteristics of dark matter using the data from nine stations in six countries.
Scientists use squeezed light to improve the sensitivity of a magnetometer, overcoming shot noise limitations. By evading measurement back-action, they enhance the magnetometer's performance and detect smaller changes in magnetic fields.
Researchers at Virginia Tech have developed a wearable headset that measures brain activity in real-time, allowing for the study of social interactions, humans of all ages and sizes, and people in motion. The optically pumped magnetometry technology enables movement-tolerant brain imaging simultaneously with two research volunteers.
Researchers at the University of Warwick used social media-inspired algorithms to analyze space weather observations and reveal the lifecycle of substorms. The study shows that these substorms manifest as global-scale electrical current systems associated with the aurora, covering most of the Earth's night-side at high latitudes.
Brian Zhou, Assistant Professor of Physics at Boston College, has received a $567,000 NSF CAREER Award to study the imaging of photocurrents in quantum materials. He will use this funding to develop nanoscale quantum sensors for spatially imaging flow and characterize ultrathin magnetic materials.
Purdue University scientists create ROUGHIE, a maneuverable underwater glider that can operate silently and efficiently in shallow seas. The glider's unique design allows it to follow complex paths and explore areas inaccessible to other underwater gliders.
A team of scientists has found that Venus flytrap electrical signals generate magnetic fields, detected using atomic magnetometers. The magnetic signals are weak, but comparable to human nerve impulse signals.
Researchers adapt high-sensitivity optically pumped magnetometers to measure magnetic fields in extreme environments, including geological movements, solar flares, and neural activity. The study highlights techniques to enhance signal and reduce noise, shedding light on emerging hybrid sensors.
A USask physicist is leading a world-first collaboration to develop a compact, precise magnetometer using diamond-based technology. The new device has potential applications in geological prospecting, medicine, and quantum computing.
Researchers developed a precise method to measure ultrafast magnetization changes in materials by observing emitted terahertz radiation. The technique enabled the detection of an acoustically-driven ultrafast magnetization signal, confirming its accuracy and sensitivity.
Researchers at Johannes Gutenberg University Mainz have developed a non-contact method for detecting the state of charge and defects in lithium-ion batteries. The technique uses atomic magnetometers to measure the magnetic field around battery cells, enabling fast and high-throughput measurements.
Researchers have developed an atomic magnetometer that can map the electrical conductivity of the human heart with high resolution. This technology has the potential to diagnose diseases such as atrial fibrillation without invasive procedures.
Researchers from the University of Warwick developed a 'social network' of over 100 ground-based magnetometers to monitor geomagnetic substorms. This allows for more accurate models and helps understand space weather's impact on electrical systems.
Scientists at ITMO University and Lebedev Physical Institute create a microwave antenna that creates a uniform magnetic field in large volume, enabling super-sensitive magnetic field detectors. The device uses nanodiamonds with defects to achieve coherent control of electronic spins, improving magnetometer sensitivity.
The Dellingr team developed a more capable and resilient CubeSat platform, advancing the state-of-the-art in this mission class. The team's innovative approach to resilience and problem-solving enabled them to recover from system failures and gather high-quality data about Earth's upper atmosphere.
Researchers found a tilt of less than 0.01 degrees in Saturn's magnetic field, contradicting the theory that it requires a significant tilt to form. The team also spotted interesting structures near the planet, including a secondary source of magnetism and electric currents flowing between the rings and the planet.
A NASA technologist is developing a self-calibrating hybrid space magnetometer that combines the precision of fluxgate and atomic magnetometers. The device will be ideal for CubeSat and small satellite missions, enabling simultaneous multi-point observations and studying Earth's ever-changing magnetic fields.
The NOAA GOES-S, T, and U satellites are nearing completion with six new instruments that will offer advanced imaging capabilities for more accurate weather forecasts. The instruments include the Advanced Baseline Imager (ABI), Extreme Ultraviolet and X-ray Irradiance Sensors (EXIS), Geostationary Lightning Mapper (GLM) and others.
Physicists have developed an extremely high-precision method for magnetic field measurement, combining the accuracy of helium and cesium magnetometers. This device has an intrinsic sensitivity ideal for explaining the missing antimatter in the universe, a key area of research in fundamental physics and cosmology.
Researchers from Loughborough and Nottingham Universities developed a multi-SQUID device that can operate at 77 K, outperforming standard 4.2 K SQUID magnetometers. The new design uses flux focusers to achieve high temperature performance with low noise levels.
VTT's innovative magnetometer is significantly cheaper than traditional technology and less sensitive to external magnetic fields. This makes it suitable for applications such as magnetoencephalography in neuroimaging, mining industry, industrial quality control and security.
The NOAA Magnetometer instrument is set to monitor magnetic field variations around Earth, enabling more accurate forecasts of space weather and its effects on orbiting spacecraft and electric power grids. The advanced technology will result in more timely and accurate weather forecasts, supporting public safety and economic health.
A new microfluidic chip produced by NIST can detect the presence of molecules in a complex mixture using polarized xenon gas. The device has been demonstrated to detect weak signals corresponding to fewer than 1 trillion polarized xenon atoms, rivaling low-field optical magnetometry.
Researchers have developed an analytical approximation to study SQUID dynamics, enabling faster computation and evaluation of sensitivity in magnetometers. The technique, used for low-noise amplifiers and antennas, reduces simulation time to practically zero.
The successful deployment of the GOES-R satellite's magnetometer boom will enhance space weather forecasting, predicting geomagnetic storms with greater accuracy. This technology improvement supports better protection of property, public safety, and economic development.
A magnetic pen for smartphones, called the MagPen, can be used on both mobile devices and tablet computers with magnetometers embedded in them. The technology enhances expressiveness of stylus pens without requiring additional hardware.
The MAVEN magnetometer will study the planet's magnetic field to infer how the atmosphere evolved, helping answer why Mars became a frozen desert. By measuring sections of the planet's magnetic field, scientists can create a bigger picture of the overall atmosphere and understand its interactions with solar wind.
University of Utah physicists created a spintronic device that uses MEH-PPV plastic paint to detect magnetic fields, showing exceptional impact in real-world applications. The new magnetometer can accurately measure fields ranging from weak to strong, with potential consumer products on the market in three years or less.
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.
Researchers at Berkeley Lab have successfully performed nuclear magnetic resonance (NMR) without the use of magnets, overcoming obstacles like polarization and chemical shifts. This breakthrough enables more portable and cost-effective NMR, with potential applications in medical diagnoses and field analyses.
Physicists at UC Berkeley used sensitive magnetometers to search for biomagnetism in the world's largest flower, but found no evidence of a strong magnetic field. Despite being unable to detect a significant magnetic signal, researchers believe studying biomagnetism in plants could lead to new discoveries.
A recent study by Johns Hopkins researchers found that hospital shootings are extremely rare, while the rate of assaults on healthcare workers is four times higher than in other industries. The study argues that investing heavily in high-tech security measures may not be effective and instead focuses on preventing everyday assaults.
Researchers successfully tracked a human heartbeat using NIST's miniature atom-based magnetic sensor, confirming its potential for biomedical applications. The device measured the heart's magnetic signature in picoteslas and demonstrated sensing stability lasting tens of seconds.
Researchers have improved alkali-vapor magnetometer measurements by maintaining spin polarization for over 60 seconds at room temperature, a two-orders-of-magnitude improvement. The technique involves coating the glass vapor cell with an antirelaxation coating to reduce magnetic fluctuations and collisions among atoms.
The new NIST mini-sensor is almost 1000 times more sensitive than the original chip-scale magnetometer and can detect magnetic fields in the range of 3-40 femtoteslas. The device has potential applications in non-invasive biomagnetic measurements, such as fetal heart monitoring and brain activity measurement.
Researchers have developed a device that can map magnetic fields at an unprecedented level of precision, detecting even the smallest magnetic fields with great accuracy. The breakthrough uses ultra-cold Bose-Einstein condensates to create a highly sensitive magnetometer.
Researchers at NIST have developed a low-power, mini clock design inspired magnetometer that can detect magnetic field changes as small as 50 picoteslas. The device is about the size of a grain of rice and can be powered with batteries.