Articles tagged with Electromagnetism
Researchers are exploring quantum RF sensing, sensemaking, and related technologies through a three-year MOU. The collaboration combines superconducting quantum technology and advanced signals expertise to address congested electromagnetic environments and complex operational scenarios.
Researchers at Kyushu University have developed a novel molecule that can produce fluorescence and serve as an MRI contrast agent, addressing limitations of current imaging techniques. The molecule, a water-soluble and metal-free compound, demonstrates improved imaging depth and reduced toxicity compared to existing agents.
A new discriminative model improves the detection of unknown electromagnetic waveforms by combining time- and frequency-domain features with a cosine similarity loss function. This approach enhances the extraction of class-specific features, leading to higher prediction accuracy and robustness in identifying unknown or unseen waveforms.
Researchers developed a rheologically engineered 3D-printing strategy for highly loaded graphene/carbonyl iron composites, resulting in gradient honeycomb absorbers capable of ultra-broadband attenuation. The absorber achieves broadband absorption from 18 GHz to 4 THz with stable performance under various environmental conditions.
Researchers from Kyushu University used high-power lasers to recreate magnetic reconnection in a controlled environment. Their study shows that reconnection rates are governed by local physics, not plasma properties, providing experimental benchmarks for testing theoretical models.
The new composite material combines strong electromagnetic shielding, high absorption, improved toughness, and electrothermal performance through a carefully engineered layer-by-layer structure. Its fracture toughness reached 2.68 MJ m⁻³, representing a 173% improvement compared to conventional materials.
Researchers have successfully reversed magnetization in nanoscale multiferroic materials using electric fields, enabling energy-efficient magnetic memory devices. The study demonstrates a promising approach for next-generation memory technologies with potential for higher-density memory architectures.
Researchers have developed a method to transfer electron topology into measurable orbital angular momentum and polarization skyrmions, enabling noninvasive diagnosis and versatile radiation sources. The approach uses guided Cherenkov emission and demonstrates reproducible electron-to-field topology-transfer interfaces.
A research team has produced the first experimental verification of a theoretically predicted flow state in the interiors of rapidly rotating celestial bodies. The experiment replicated the physical processes that occur in stars and planets, providing a robust experimental basis for testing theoretical models.
Researchers developed a unified scaling framework to separate quantum geometry contributions from disorder in nonlinear Hall data. The framework identified quantum-metric and Berry-curvature signals in existing second-order Hall data, allowing for clearer understanding of quantum-metric and Berry-curvature signals.
A study by Pusan National University researchers found that Korea's emission trading reforms could reduce fossil fuel usage by increasing carbon pricing, while uniform benchmarking and auctioning ratio changes would affect power generation companies differently. The reforms aim to maximize their impact with complementary measures.
A new study from the University of Toyama found that a 50°C difference in heating temperature significantly affects the structure and stability of ultrathin FePd films. Films heated to 150°C maintained their flat surface, while those at 200°C exhibited controlled solid-state dewetting, enabling self-organized magnetic structures.
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.
The discovery of altermagnetism reveals a new symmetry class of matter and has profound implications for quantum materials, condensed matter physics, and future information technologies. Researchers established that nature hosts a third elementary form of collinear magnetism.
Researchers created a single-spin quantum microscope to observe magnetic states in atomically thin devices, introducing a conceptual shift in how magnetic transistors can be engineered. The device achieved an electrical on/off ratio of a million percent and a magnetic on/off ratio of 3000 percent.
Researchers have established a strategic framework for triboelectric nanogenerators in military applications, overcoming limitations of traditional sensing systems. TENGs efficiently convert mechanical energy into electrical energy through contact electrification and electrostatic induction, enabling self-sustaining microsystems with h...
Researchers have developed a novel quantum material that can naturally enable the study of non-Hermitian dynamics, a phenomenon where systems exhibit unusual behaviors. The material, a magnetic topological insulator, allows for the creation of electronic networks with direction-dependent connections, enabling the accumulation of states...
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.
A Korean research team created an underwater acoustic lens capable of focusing sound precisely at a desired point while reducing weight by about 40% compared to conventional designs. The findings have significant implications for underwater communication, marine environmental monitoring, and acoustic energy transfer.
A team of engineers developed a soft, shape-shifting mechanical surface that responds to touch, senses its movements, and visually communicates changes in real time. The platform combines magnetic actuation, embedded sensing, and LED-based visual feedback into a single programmable system.
Researchers at Texas A&M University develop a laser technique called TRIP to directly measure quantum forces shaping proteins, enabling accurate prediction of how pharmaceutical drugs interact with them. This breakthrough could lead to the design of medicines tailored to specific diseases, revolutionizing precision medicine.
A team of scientists observed Jahn–Teller polarons in cobalt oxide crystals activated by tailored laser pulses. The study reveals the material's structural, electrical, and magnetic properties can be engineered using ultrafast laser pulses.
Researchers have created stable patterns of light called optical skyrmions using a laser and a small circular disc, generating up to four related topological field patterns simultaneously. This method offers a simpler way to generate, study and adjust optical skyrmions, which hold potential for future data storage and computing systems.
The ESOT FiSensor combines electrical signals with light transmission, allowing simultaneous monitoring of vibration, pressure, temperature, and strain through a single fiber. Tests show exceptional performance with over 90% sensitivity retention after traveling 50 meters.
A digital 'super-brain' with physics-based knowledge significantly speeds up the design and development of optical components, such as those for quantum computers and camera lenses. By integrating physical principles into machine learning algorithms, researchers reduce simulation time from months to days.
Scientists create a moiré metasurface to map right- and left-handed regions in materials, visualizing chirality as two-dimensional images. The new approach resolves chirality distributions with a resolution of approximately 100 μm.
A team of researchers developed a method for creating realistic virtual tomato farms that automatically generate data for training agricultural AI systems. The approach uses advanced reconstruction methods and Unreal Engine 5 software to reproduce lighting, textures, and geometry, resulting in highly accurate object detection models.
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 Beihang University developed a hierarchical modular film system that couples biomimetic temperature-humidity sensing with dual-mode heating and ultrahigh EMI shielding. The system delivers exceptional metrics, achieving stable signal transmission and collaborative heating under diverse conditions.
Researchers at DTU have developed a new magnetic material that features a stable internal magnetic structure and almost no external magnetic field, above room temperature. This could enable faster components and lower energy consumption in spintronics.
Researchers at MIT have developed a way to measure multiple physical quantities with solid-state quantum sensors, exploiting entanglement to overcome signal mixing. This approach enables deeper understanding of the behavior of atoms and electrons in materials and living systems, such as cancer cells.
Researchers developed inorganic high-performance fiber-based materials for electromagnetic interference shielding, offering valuable insights into the development of next-generation lightweight and durable EMI shielding materials. The review highlights the importance of interdisciplinary research to drive innovation in this field.
Researchers used airborne electromagnetic surveys to characterize a deep freshwater reservoir beneath Farmington Bay and Antelope Island. The study revealed that freshwater saturates the sediments beneath the lake's hypersaline surface to depths of 3-4 kilometers, extending towards the interior of the lake.
A team from Tokyo Metropolitan University successfully detects laser-assisted electron scattering using circularly polarized light, shedding light on atomic scale helicity and its impact on electron-matter interaction. The signal agrees with theory, but further work is needed to improve detection efficiency and accuracy.
Researchers observed a sequence of exotic magnetic phases in an ultrathin material, realizing a theoretical model of two-dimensional magnetism. The discovery may lead to new technologies by stabilizing magnetic vortices at nanoscale.
Researchers at Tokyo Metropolitan University have created a rotating tabletop device to test dynamic wireless power transfer for electric vehicles. They successfully replicated conditions of a car moving at 40 kilometers per hour, promising accelerated research into next-gen charging.
Researchers develop a multifunctional hydrogel system with broadband electromagnetic interference shielding and infrared stealth performance, exceeding that of commercial-grade materials under various harsh conditions. The gel's mechanical robustness and environmental stability are enhanced by a synergistic MXene treatment strategy.
Physicists have developed a new terahertz microscope that allows them to observe quantum vibrations in superconducting materials for the first time. The microscope enables researchers to study properties that could lead to room-temperature superconductors and identify materials that emit and receive terahertz radiation.
A new window technology shields buildings from EMP threats while maintaining transparency. The innovative design offers broadband EMP protection with high optical transparency, suitable for practical architectural applications.
The Hong Kong Polytechnic University has developed soft magnetorheological textiles with programmable control and flexibility. These innovative materials overcome traditional drawbacks of heavy magnetic powders and health risks, enabling precise intelligent modulation for various applications.
Researchers present novel theoretical framework explaining non-monotonic temperature dependence and sign reversal of chirality-related AHE in highly conductive metals. The study reveals clear picture of unusual transport phenomena, forming foundation for rational design of next-generation spintronic devices and magnetic quantum materials.
A research team at Osaka Metropolitan University successfully realized a new type of Kondo necklace with increased localized spin size, demonstrating a clear phase transition to magnetic order. The study shows that the Kondo interaction promotes magnetism when the localized spin is larger than 1/2.
The University of Birmingham has launched a new facility for separating and recycling rare earth magnets, reducing the UK's reliance on imports. The facility uses an innovative hydrogen-based process that can recover over 400kg of rare earth alloy per batch.
The American Physical Society's Global Physics Summit will convene over 14,000 physicists worldwide for groundbreaking research presentations. The event will feature both in-person and online experiences, including scientific sessions, exhibits, and networking events.
Researchers have discovered a new method for generating highly stable and precise microwave signals through self-induced superradiant masing. This phenomenon produces long-lived bursts of microwave emission without external driving, paving the way for technological advances in fields like medicine, navigation, and quantum communication.
Researchers propose a theoretical model to analyze adhesion and escape phenomena during low-velocity impacts between charged dust particles and spacecraft. The study focuses on the interaction between charged particles and spacecraft within a plasma sheath, considering significant size differences.
Theoretical physicists at MIT propose that under certain conditions, magnetic material’s electrons could form quasiparticles called “anyons” that can flow together without friction. If confirmed, it would introduce a new form of superconductivity persisting in the presence of magnetism.
Researchers have created a design framework for magnetic cloaks that can protect sensitive electronics and sensors from magnetic interference. The new concept enables shielding of components in fusion reactors, medical imaging systems, and isolating quantum sensors.
Scientists successfully introduce ferromagnetism into bismuth ferrite at room temperature through dual-cation substitution, enabling potential use in low-power memory devices. Negative thermal expansion is also observed, which could help solve problems caused by thermal expansion in electronic components.
Scientists at PSI's cleanroom used the laser to create two-dimensional continuous changes in magnetic properties in materials for various applications. The technique enables local, gradual approach to creating gradients of magnetic properties that can take on arbitrary shapes.
A new model developed by Osaka Metropolitan University Assistant Professor Takuya Fujinaga enables robots to accurately pick tomatoes, with an 81% success rate. The system evaluates the ease of harvesting for each tomato, taking into account factors such as fruit clustering and stem geometry.
A novel laser-induced graphene-based strategy has been demonstrated for direct 'drawing' of highly precise, patterned electromagnetic metasurfaces. The metasurface exhibits excellent switching behavior across various frequency bands, enabling rapid switching between wave transmission and shielding.
Researchers at CUNY ASRC introduce twistelastics, a technique using tiny rotations to manipulate mechanical waves, allowing unprecedented adaptability in sound and vibration control. The breakthrough enables flexible wave behavior for applications in medical imaging, consumer electronics, and microfluidics.
The use of atomic magnetometers in electromagnetic induction imaging (EMI) has greatly improved its low-frequency sensitivity. This technology enables the exploration of challenging applications such as through-barrier imaging and organ imaging, expanding EMI's potential in medicine and other fields.
Researchers developed a multifunctional foam combining electromagnetic interference shielding, thermal management, and infrared stealth capabilities. The bio-based foam successfully blocks over 99.9989% of electromagnetic waves while regulating surface temperature through phase-change mechanisms.
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 Princeton University have developed a machine-learning system that can shape ultrahigh frequency transmissions to avoid obstacles, allowing for real-time adaptation in dynamic environments. This breakthrough could enable the widespread adoption of sub-terahertz frequencies for high-speed data transmission in applications...
Researchers develop new method to detect subtle magnetic signals in common metals like copper, gold, and aluminum, using a laser and large-amplitude modulation of the external magnetic field. This breakthrough could lead to advances in semiconductor industry, spintronic devices, and quantum systems.
Researchers have developed a new way to precisely tune magnetism using ultra-thin CrPS₄ material. This breakthrough could solve long-standing scientific problems and pave the way for smarter magnetic technologies.
In a groundbreaking study, researchers discovered that strong magnetic fields can reverse the overall direction of angular momentum in magnetovortical matter. This finding challenges established theories and highlights the previously underestimated role of orbital motion in certain regimes.