Articles tagged with Electromagnetic Fields
Researchers at the University of Stuttgart have developed a new technique that allows for simultaneous excitation and detection in MRI, reducing dead time and enabling precise imaging of rapidly decaying signals. This method has potential applications in medical imaging, materials research, and safety inspections, and could lead to new...
Researchers developed a theoretical framework explaining unusual conduction behavior in magnetic materials. Quantum fluctuations affect electron transport in chiral magnets, leading to logarithmic temperature dependence at low temperatures.
Researchers demonstrate reversible switching of helimagnetic order by manipulating the polarity of an electric current under an applied magnetic field. The study provides a principle for controlling complex magnetic order using electric currents, advancing fundamental understanding of helimagnets.
Researchers have developed a single device that can harvest light and emit bright visible light, achieving high efficiency in both power conversion and electroluminescence. The device uses a novel organic semiconductor material with controlled energy flow, enabling it to operate at standard lithium-ion battery voltages.
Researchers at Chalmers University of Technology have developed a new material design that enables superconductivity to operate at higher temperatures and withstand strong magnetic fields. This breakthrough could pave the way for far more energy-efficient electronics and quantum technologies.
Physicists at the University of Utah have developed a new, streamlined system for generating orbital angular momentum in electrons, allowing for cheaper and more abundant materials. The innovation uses natural symmetry and vibrations of atoms to control electron momentum.
Groundbreaking simulations reveal how black holes create dazzling light shows by material zipping around them. The results could help explain hundreds of faintly luminous objects spotted in the early universe.
Researchers developed a comprehensive theory to interpret how water molecules interact with contrast agents in MRI scans, offering more accurate predictions and explanations of NMR relaxation. This advancement paves the way for new insights into medical imaging and materials science.
A University of Portsmouth-led study found female crabs are significantly more sensitive to electromagnetic fields from underwater power cables than males. This could have significant ecological consequences for marine food chains and crab populations if cables are placed in the wrong spots.
Researchers developed a wide-band and high-sensitivity magnetic Barkhausen noise measurement system to understand energy loss mechanisms in soft magnetic materials. The study revealed that damping caused by eddy currents generated during DW motion is the main cause of excess eddy current losses.
Researchers at Max Planck Institute successfully couple spatially separated molecules via a modified vacuum field in an optical microresonator. This breakthrough enables the creation of synthetic states of coupled molecules, with potential applications in quantum technology and information processing.
Southwest Research Institute (SwRI) has introduced a new indoor antenna measurement range that enables comprehensive 3D radiation pattern data collection for all antenna types. The spherical near-field range offers improved flexibility and accuracy, overcoming size, angle, regulatory, and weather limitations.
The TRACERS mission will explore dynamic interactions between the Sun's and Earth's magnetic fields. By observing particles and fields in the northern magnetic cusp region, researchers can study how magnetic reconnection affects the space environment.
The researchers developed a multifunctional phase-change composite that integrates multiple energy conversion capabilities with superior EMI shielding. The novel composite combines solar-thermal, thermoelectric, electrothermal, and magnetothermal energy conversion with high EMI shielding effectiveness.
A highly aligned and compact MXene film exhibits exceptional electromagnetic interference (EMI) shielding effectiveness across ultra-broadband frequencies. The innovative film, developed by Professor Xuchun Gui's team, demonstrates infrared stealth capabilities making it a promising candidate for advanced stealth applications.
Scientists at UC Riverside successfully measured the electric dipole moment of aluminum monochloride, a crucial diatomic molecule. The precise measurement will aid in quantum technologies, astrophysics, and planetary science.
A team led by Junichi Shiogai successfully observes the superconducting diode effect in an Fe(Se,Te)/FeTe heterostructure, exhibiting rectification under various temperature and magnetic fields. This breakthrough paves the way for ultra-low energy electronics built from superconductors.
A team of researchers from Jinan University has developed a metasurface-based imaging technique that can precisely measure the intensity, phase, and polarization of arbitrary light field distributions in a single exposure. The system uses optimized metasurface structural parameters to diffract incident light fields into sub-images that...
The thorium-229 nuclear optical clock has the potential to achieve a very high-precision time and frequency standard due to its unique properties. Despite significant progress, numerous challenges remain, including temperature sensitivity and the scarcity of the isotope.
Researchers developed a conformal programmable metasurface that generates Orbital Angular Momentum (OAM) waves at millimeter-wave frequencies without external spatial excitation. The design mitigates feed leakage radiation and realizes low-profile configuration, enabling next-generation wireless communication and space-based applications.
Researchers from Osaka University have discovered a connection between strain equations for atomic dislocations and the Biot-Savart law in electromagnetism. This link enables researchers to use a well-known formula to analyze the effects of dislocations, leading to new findings on material science.
Researchers at Johannes Gutenberg University Mainz discovered altermagnetism, a new concept in physics that combines the characteristics of ferromagnets and antiferromagnets. The discovery has the potential to increase data storage capacity by utilizing the magnetic moment of electrons for dynamic random-access memory.
Researchers used time-delayed laser pulses to capture electric and magnetic field vectors of surface plasmon polaritons, revealing a meron pair's spin texture. The study demonstrates stable spin structures despite fast field rotations.
A team of researchers has developed a novel technique to steal artificial intelligence (AI) models by monitoring electromagnetic signals. The method allows attackers to recreate the high-level features of an AI model with 99.91% accuracy, potentially undermining intellectual property rights and exposing sensitive data.
Researchers at Aalto University have developed a method to create tiny vortices in light, which can carry information and potentially increase data transmission capacity by 8-16 times. The discovery uses quasicrystal design and manipulated metallic nanoparticles to achieve this feat.
Researchers developed a technique to generate synthetic electromagnetic fields on superconducting quantum processors, enabling the exploration of material properties. The technique allows scientists to probe complex phenomena in materials, shedding light on key features such as conductivity and magnetization.
A new type of sensor leverages exceptional points to achieve high sensitivity and reconfigurability. The novel design addresses limitations of traditional EP-based sensors by incorporating spoof localized surface plasmon resonators, allowing for dynamic reconfiguration of EP states across a wide frequency range.
New research reveals offshore windfarm electromagnetic fields have minimal impact on shark growth and survival, but ongoing studies aim to improve understanding of effects on marine species. The study focused on small-spotted catshark development under control and windfarm-impacted conditions using AC or DC currents.
KSU assistant professor of mathematics Eric Stachura will investigate how electromagnetic waves interact with surfaces, a problem relevant to defense mechanisms against directed energy weapons. The three-year grant enables collaboration with researchers in Sweden and Greece, as well as student projects at Kennesaw State.
A team of researchers from NUS has developed a novel method to stimulate muscle cells using magnetic therapy, which produces and releases proteins with anticancer properties. The study demonstrates that this non-invasive approach can prevent cancer cell growth and invasion, similar to exercise.
Researchers have adapted a microwave circulator to precisely tune nonreciprocity in quantum computing, simplifying future work. The integrated nonreciprocal device enables controllable quantum interactions, paving the way for more sophisticated quantum computing hardware.
Scientists at STAR collaboration observe magnetic field's impact on charged particles, providing new insight into quark-gluon plasma's electrical conductivity. The findings give scientists a way to study QGP's fundamental properties, shedding light on the universe's most powerful magnetic fields.
Researchers successfully demonstrate a third branch of magnetism in manganese telluride, combining ferromagnetic and antiferromagnetic properties. This discovery offers promising opportunities for future applications in information technology and nanoelectronics.
Researchers at North Carolina State University have identified a welding technique that can join composite metal foam components without impairing their properties. The new method uses induction welding, which penetrates deeply into the material and insulates it against heat.
Theoretical demonstration shows that an optical cavity can change the magnetic order of α-RuCl3 from a zigzag antiferromagnet to a ferromagnet solely by placing it into the cavity. The team's work circumvents practical problems associated with continuous laser driving.
A new study by the University of Oldenburg team confirms that radio waves in the VHF range above 116MHz have no impact on migratory birds' magnetic compass sense. This discovery debunks previous theories suggesting mobile communication networks affect the birds' navigation.
Researchers have created a new type of conducting polymer with a helically grown structure, which can emit circularly polarized light. The polymer's radicals are arranged in a helical shape and can be aligned into stripe-like structures when exposed to a magnetic field.
Researchers have successfully controlled chemical reactions by manipulating electromagnetic fields in an infrared cavity, improving understanding of reactivity and products formation. The discovery offers a new path for quantum physics to regulate chemical reactions.
A recent study conducted by NUS researchers shows that weekly exposure to proprietary pulsed electromagnetic field (PEMF) therapy using the BIXEPS device can significantly improve mobility and body composition in older adults, with notable benefits found in functional tests and reduced perception of pain.
MIT researchers developed a miniature vacuum pump for portable mass spectrometers, overcoming design limitations of traditional pumps. The 3D-printed pump can create and maintain lower pressure vacuums, increasing the device's lifetime and enabling its use in remote locations and space exploration.
Researchers at Texas A&M University have identified a new circuit element called the meminductor, which exhibits memory-like properties. The discovery was made using a two-terminal passive system and proved the existence of meminductance in an inductor circuit element.
Researchers have developed a functional polymeric binder for stable, high-capacity anode material that can increase the current EV range at least 10-fold. The new polymer utilizes hydrogen bonding and Coulombic forces to control volumetric expansion, resulting in a thick high-capacity electrode and maximum energy density.
Researchers found that increasing melanin levels in human skin reduces Cherenkov emission intensity, while blood concentration affects different color channels. The study suggests using multispectral signatures to correct attenuated signals based on patient's blood volume or skin color.
Engineers at MIT and Caltech have developed an ingestible sensor that can track its location as it moves through the digestive tract, revealing where slowdowns in digestion may occur. The sensor uses a magnetic field produced by an electromagnetic coil outside the body to calculate its position.
Researchers have developed a new system to facilitate the diagnosis and treatment of gastrointestinal motility disorders. The ingestible 'smart pill' tracks movement through the GI tract using magnetic fields, allowing for more accurate and efficient diagnosis and targeted therapeutic interventions.
A team of researchers has developed an experimental method to manipulate the Rydberg state excitation in hydrogen molecules using bicircular two-color laser pulses. By controlling the photon effect and field effect, they were able to generate Rydberg states while varying the extent to which each effect contributed to the process.
Scientists have successfully filmed the impulsive response of bound electrons to intense XUV pulses using a new photoelectron spectroscopy. The technique provides a novel method for time-resolved imaging of ultrafast bound-state electron processes in intense laser fields.
A Tohoku University researcher has increased the performance of a high-power electrodeless plasma thruster, moving closer to deeper space explorations. The breakthrough enables more efficient use of radiofrequency power to generate thrust energy in magnetic nozzle plasma thrusters.
Scientists at Duke University have engineered materials capable of producing tunable plasmonic properties while withstand extremely high temperatures. The new high-entropy carbides can achieve improved communications and thermal regulation in aerospace technologies, including satellites and hypersonic aircraft.
Researchers have developed new stable quantum batteries that can reliably store energy into electromagnetic fields. The micromaser system allows for efficient charging with protection against overcharging and preserves the stored energy's purity.
Researchers at Duke University have developed a new design for plasmonic metasurfaces that greatly expands their frequency range while also making them more robust against the elements. The new fabrication process allows for the use of a wide variety of shapes, opening up new possibilities for applications such as super cameras.
Researchers at MIT have developed a method to enable quantum sensors to detect any arbitrary frequency without losing nanoscale spatial resolution. The new system, called a quantum mixer, injects a second frequency into the detector using microwaves, enabling detection of signals with desired frequencies.
Researchers at the University at Buffalo have developed a new magnetic material that can help monitor the amount of charge left in lithium-ion batteries. By tracking changes in the material's magnetism, scientists can estimate the battery's state of charge.
Researchers at Duke University have developed a machine learning algorithm that incorporates known physics into neural networks, allowing for new insights into material properties and more efficient predictions. The approach helps the algorithm attain transparency and accuracy, even with limited training data.
Research suggests that EMFs can cause Alzheimer's disease by building up calcium levels in brain cells. This increase leads to changes in the brain, which develop conditions for Alzheimer's. The study highlights the importance of reducing EMF exposure to prevent or delay the onset of Alzheimer's.
Researchers at Georgia Institute of Technology have developed micro-rocker bots that can move precisely on a solid surface using a single electromagnetic coil. The robots, about the size of a particle of dust, are controlled by a magnetic field generated by the coil and can perform well-controlled movement with selectable direction.
Researchers investigated the shortest possible time scale of optoelectronic phenomena and found that it cannot be increased beyond one petahertz. The experiments used ultra-short laser pulses to create free charge carriers in materials, which were then moved by a second pulse to generate an electric current.
Researchers at Rice University have developed a new type of electronics using undulating graphene, which creates mini channels that produce detectable magnetic fields. This technology has the potential to facilitate nanoscale optical devices and valleytronics applications, such as converging lenses and collimators.
Researchers at Aalto University developed a simple, low-cost wireless charging system that provides efficient charging regardless of device position or orientation. The new design uses a cylindrical power coil to create a donut-shaped charging field, increasing convenience and reliability for consumer devices.
Researchers demonstrated plasma acceleration at megahertz repetition rates, opening doors to boosting particle energy with plasma accelerator modules as booster stages. The recovery time of the plasma wave was found to be approximately 70 nanoseconds.