Articles tagged with Electric Fields
Researchers find quasiparticles called ferrons that carry waves of polarization and heat in ferroelectric materials. The ferron's behavior is sensitive to an external electric field, turning the material into a thermal switch.
Researchers at MIT have discovered a way to switch graphene's superconductivity on and off with short electric pulses, opening up new possibilities for ultrafast brain-inspired electronics. This discovery could lead to energy-efficient superconducting transistors for neuromorphic devices.
Researchers at the University of Rostock develop a new technology to eject electrons from metals using extreme short laser flashes. They generate the shortest electron burst to date, allowing for precise control over electron streaming time.
Researchers have developed flexible polysulfate compounds that can form thin films, enabling the creation of energy-storing capacitors that withstand extreme temperatures and electric fields. These new materials could lead to cheaper, simpler, and more durable power systems in electric cars and other applications.
Scientists from Nagoya Institute of Technology have discovered that Auger recombination rate decreases with increasing excited carrier concentration under high injection conditions. This finding has significant implications for optimizing SiC bipolar device efficiency and development of next-generation high-power devices.
Researchers have developed a novel substrate boosting square-tensile-strain, promoting four-variant spontaneous polarization and defect-dipoles. This breakthrough enables reversibly controlled ternary polar states and ferroelectric bias.
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 successfully record phase distribution of electrons, unveiling detailed structure of its complex wavefunction. The method uses attosecond laser pulse to visualize electron wavefunction in a gas.
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 Brazilian team developed an electrochemical immunosensor to detect SARS-CoV-2 antibodies, achieving 88.7% sensitivity and 100% specificity in just five minutes. The device can be adapted for other diseases and has potential for monitoring seroconversion and seroprevalence.
A University of South Australia physicist has solved the long-standing mystery of lightning's zig-zag pattern and dark electric column. The breakthrough explains how singlet-delta metastable oxygen molecules create these steps.
A new study reports that SharkGuard, a shark deterrent device, significantly reduces the number of blue sharks and pelagic stingrays caught in tuna fisheries. The technology emits a localized electric field around a baited hook, discouraging sharks from biting without getting hooked on other fish.
Research at the University of Bristol found that fertilizers alter the electric field around flowers for up to 25 minutes, reducing bee feeding effort. This impact can last longer than natural fluctuations and causes a reduction in pollination in nature.
Researchers found that fertilizers change the electric field surrounding a flower, affecting bees' ability to navigate and feed. This alteration lasts for up to 25 minutes and can persist beyond a single use of chemicals.
A novel multi-modal image retrieval system, DenseBert4Ret, has been developed by researchers from Gwangju Institute of Science and Technology (GIST) using deep learning algorithms. The system outperforms state-of-the-art models in retrieving images based on both image and text features.
Researchers at WVU are developing software for robots to learn and adapt in real-time, inspired by the neural networks of electric fish. The goal is to enable robots to navigate different terrains autonomously without human supervision.
Researchers at MIT have developed a new approach to identify topological materials using machine learning and X-ray absorption spectroscopy. The method is over 90% accurate in identifying known topological materials and can predict properties of unknown compounds.
Researchers have discovered that insects can produce as much atmospheric electric charge as a thunderstorm cloud. Insect swarms alter the electric field force at ground level, affecting local weather patterns. The study, published in iScience, highlights the link between biology and physics.
Researchers developed an electrochemical technique to recycle highly valuable homogeneous catalysts, extending their life cycle. The method uses an electrical field to separate catalysts from mixtures and bind them to a surface, allowing for reuse and reducing energy consumption.
A recent review article summarizes the latest developments in finite-control-set model predictive control (FCS-MPC) strategies for PMSMs. FCS-MPC is a promising approach to optimize drive systems, but challenges remain, including computational complexity and parameter uncertainty.
Researchers at Kyushu University counted electric charges in individual platinum nanoparticles down to the electron level, revealing net charge with high precision. This breakthrough enables better understanding and development of catalysts for breaking down pollutants.
Researchers at the Max Born Institute have used novel ultrashort soft X-ray spectroscopy to study the fate of molecular nitrogen when an electron is kicked out. They found that the B state has a similar degree of excitation as the X state, contradicting previous models. Instead, a coherent interplay between light fields enables lasing ...
Researchers developed an electronic laboratory notebook that uses knowledge graphs to describe material properties and experimental processes. The platform enables automated analysis, lossless sharing, and discovery of new materials with potential applications in energy-related devices.
Researchers have gained insight into the electronic structure of hydrated proton complexes, revealing that three inner water molecules are drastically modified by the proton. The first hydration shell senses the electric field of the proton through Coulomb interactions.
Scientists have developed a method to control chemical reactions in a single molecule by applying voltage pulses, resulting in unprecedented selectivity. By fine-tuning the voltage, researchers can interconvert different products formed during the reaction.
Scientists at Kyushu University have developed organic molecules that align in the same direction, creating a 'giant surface potential' when evaporated onto a surface. This alignment leads to a significant electric field, which can improve OLED efficiency and open new routes for realizing devices that convert vibrations into electricity.
An international research team led by the University of Göttingen has discovered unexpected quantum effects in naturally occurring double-layer graphene. The study reveals a variety of complex quantum phases emerging at temperatures near absolute zero, including magnetic behavior without external influence.
The study observes electric gate-controlled exchange-bias effect in van der Waals heterostructures, enabling scalable energy-efficient spin-orbit logic. The team successfully tunes the blocking temperature of the EB effect via an electric gate, allowing for the EB field to be turned 'ON' and 'OFF'.
Stabilized coacervate droplets can be steered using an electric field, allowing for controlled manipulation and delivery of biomolecules like enzymes. The technology has potential applications in drug delivery and other encapsulation technologies, as well as explaining the stability of biological condensates.
Researchers at Rensselaer Polytechnic Institute have successfully controlled electron spin at room temperature, a crucial step towards developing more efficient and faster devices. The discovery uses a unique ferroelectric van der Waals layered perovskite crystal to harness the Rashba or Dresselhaus spin-orbit coupling effect.
A team of researchers has discovered a property of light that remains unchanged in complex media, allowing for distortion-free communication and sensing. By applying a novel quantum approach, they showed that all light has this invariant property, which can be exploited to correct distortions without losing any light.
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 detect a unique binding mechanism between a small ion and a gigantic Rydberg atom, defying classical expectations of particle size. The molecular bond forms when the charged ion deforms the large Rydberg atom, allowing it to form an unusual molecule.
Researchers at the University of Minnesota have created a new microfluidic chip that can diagnose diseases wirelessly using a smartphone. The innovation makes at-home diagnosis faster and more affordable, with potential applications for detecting viruses, pathogens, bacteria, and other biomarkers in liquid samples.
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.
Scientists at DGIST have developed a flexible, stretchable material that lights up brightly when stretched or subjected to an electric field. The new material overcomes design issues in existing devices, offering improved luminescence and potential applications in interactive skin displays and soft robotics.
Researchers at NCCR MARVEL identified two new cubic prototypes that exhibit energetically and dynamically stable paraelectric behavior, providing a microscopic representation of the material's properties. The discovery has significant implications for the study of ferroelectricity, superconductivity, and other functional materials.
A team of scientists has discovered a way to bend electrons without applying a magnetic field by using circular polarized light in bilayer graphene. This breakthrough enables new sensing applications and opens up possibilities for infrared and terahertz sensing, medical imaging, and security applications.
Researchers have developed a direct method for generating complex structured light through intracavity nonlinear frequency conversion. This technique uses transverse mode locking to produce vortex beams, which are then converted into second-harmonic generation beams with distinct structural characteristics. The study demonstrates the p...
Researchers at MIT and University of London found that collective electric fields produced by neurons provide a stable and consistent signal of information in working memory. This allows the brain to function even if individual neurons die or change.
A team of researchers at NGI and NPL demonstrated that slightly twisted 2D transition metal dichalcogenides (TMDs) display room-temperature ferroelectricity. This characteristic can be used to build multi-functional optoelectronic devices with built-in memory functions on a nanometre length scale.
A Japanese research team developed a new microfluidic chip that uses dielectrophoresis to sort living cells in just 30 minutes. This technology eliminates the need for labor-intensive sample pretreatment and chemical tagging techniques, preserving cell structure and enabling faster separation of differently sized cells.
Researchers at Argonne National Laboratory discovered how microparticles can change direction when an electric stimulus is interrupted and reapplied with the same orientation. This emergent behavior has potential applications in microfluidic pumps for biomedical, chemical, and electronics applications.
Researchers at the University of New Hampshire have made a groundbreaking discovery about the origin of lightning using radio telescopes. They found that the sources of lightning are indeed the streamers, or tiny spark-like discharges, supporting one of two competing theories on how lightning begins.
University of Warwick physicists have discovered a complex electrical 'vortex' pattern in ferroelectric materials that mirrors the spin crystal phase of ferromagnets. This finding suggests that ferroelectricity and magnetism could be two sides of the same coin, with potential implications for new electronic technologies.
Researchers at the University of Manchester observed the Schwinger effect using graphene-based devices, producing particle-antiparticle pairs from a vacuum. They also discovered an unusual high-energy process where electrons became superluminous, providing an electric current higher than allowed by general rules.
Researchers at USC Viterbi School of Engineering have created a molecular device capable of recording and manipulating its surrounding bioelectric field. The device has the potential to provide ultra-fast, 3D high-resolution imaging of neural networks without damaging healthy cells or tissue.
Researchers at Japan Advanced Institute of Science and Technology developed a graphene sensor that detects electric fields with improved efficiency and reduced size. The mechanism involves the transfer of charges between graphene and traps, allowing for the detection of field polarity and magnitude.
The discovery of electroferrofluids with nonequilibrium voltage-controlled magnetism has the potential to control pattern formation and structures, providing valuable insights into dissipative systems. This system can be used to study transition into dissipative systems and understand how external influences interact with the system.
A team from UCF created an optical oscilloscope that can measure the electric field of light, allowing for faster data transmission in fiber optic communications. The device converts light oscillations into electrical signals at speeds of up to gigahertz frequencies.
Researchers from South Korea have demonstrated that applying an electric field during air stripping can significantly improve ammonia removal efficiency from wastewater. The study found that electric fields with alternating current of 50 MHz and power of 15 V/cm increase efficiency from 51% to 94%, even under sub-optimal conditions.
A new study from the University of Eastern Finland introduces an electric soot collector that achieves a 45% fine particle reduction efficiency in logwood-fired masonry heaters. The technology uses natural charges of flames to collect particles, but further optimization is needed for higher reduction efficiencies.
Physicists from HSE University and MIPT discovered a correlation between Martian dust storms and Schumann resonances. The study suggests that electric fields in the Martian atmosphere may induce standing electromagnetic waves, similar to those on Earth.
A team of researchers from Georgia Tech has discovered that zirconium dioxide antiferroelectric material exhibits predictable behavior when miniaturized, following a familiar law similar to ferroelectrics. This finding could lead to the design of more effective memory components and has implications beyond memory applications.
Researchers at the University of Houston have developed a new, label-free biosensing platform for detecting cancer biomarkers in exosomes. The technology uses gold nanodisks to capture and analyze surface proteins on exosomes with high sensitivity.
Researchers have found a way to stabilize the novel quantum effect in graphene at room temperature, which could lead to breakthroughs in data storage and computer components. The discovery was made using standard microfabrication techniques and showed that the material can generate its own magnetic field.
Researchers from Paderborn University and Max Planck Institute for Polymer Research have successfully demonstrated Wannier-Stark localization in polycrystalline substances. This achievement marks a significant step towards developing affordable optical modulators with broad applications in telecommunications and other fields.
Researchers at Aalto University created unexpected droplet shapes, including squares and hexagons, by disrupting thermodynamic equilibrium with electric fields. The liquids formed into interconnected lattices and torus shapes, stable for a controlled duration.
Researchers investigated methylammonium lead iodide's ferroelectric nature and photovoltaic properties, finding a freezing temperature of 270 K and a novel phase diagram. The study advances perovskite's potential for energy conversion and storage applications.
Researchers found a solution to overcome ion interference in perovskite transistors, enabling room-temperature operation. The breakthrough uses ferroelectric materials to mitigate ion transport, promising applications in low-cost electronics.