Articles tagged with Electric Fields
Researchers at Tohoku University have made a breakthrough in understanding spin currents in insulating magnets. They found that the spin current signal changes direction and decreases at low temperatures, shedding light on its propagation direction.
Recent advances in electrical control of magnetism are reviewed, covering fundamental concepts and device families for various applications. The combination of electric fields and current-induced torques enables new properties and devices, such as MRAMs and spin diodes.
The team created ten holograms with varying colors and shapes using an inverse design technique driven by artificial intelligence. They integrated an oblique helicoidal cholesterics-based wavelength modulator to accurately implement the designed holograms, enabling the establishment of an optical security system.
Scientists at Tohoku University create a tiny spot in glass using a tailored laser beam, enabling precise processing at scales below 100 nanometers. The breakthrough opens up new possibilities for laser nano-processing in various industries and scientific fields.
Researchers at Duke University have determined the theoretical fundamental limit for how much electromagnetic energy a transparent material with a given thickness can absorb. This finding has practical implications for applications such as stealth technology and wireless communications.
Researchers at UNIST have introduced non-solvating electrolytes to significantly improve the performance and lifespan of organic electrode-based batteries. The study achieved remarkable improvements in capacity retention and rate performance, with over 91% capacity retention after 1000 cycles.
Researchers have developed a method called mask wafer co-optimization (MWCO) that allows for the creation of curved shapes using variable-shaped beam mask writers. This technique reduces wafer variation by 3x and improves the process window by 2x compared to existing methods.
Researchers at UNIST have achieved a significant breakthrough in organic semiconductor synthesis by synthesizing a novel molecule called BNBN anthracene. This derivative exhibits unique properties, including precise modulation of electronic properties without structural changes.
A team of researchers at Ghent University and imec developed a silicon photonic temperature sensor that measures up to 180°C. The sensor was realized in the framework of the European SEER project, where partners focus on integrating optical sensors in manufacturing routines for composite parts.
The Tokyo University of Science team has created a device that enables the simultaneous evaluation of many cancer cells, allowing for rapid and accurate analysis. The system, called cROT, increases throughput to 2,700 cells per hour, making it more than 100 times faster than traditional methods.
Researchers propose that parallel electric fields in the upper atmosphere could produce the colorful emissions of Steve and the picket fence. This unusual process has implications for understanding energy flow between Earth's magnetosphere and ionosphere.
Researchers from Nagoya University found that electric eel discharges can genetically modify small fish larvae, demonstrating the potential for electroporation in nature. The study's findings suggest that electric fields can affect gene transfer in organisms, leading to new insights into genetic modification.
Researchers discovered bottlenose dolphins' ability to detect weak electric fields, which helps them search for fish hidden in sediment. This newfound sense also enables dolphins to navigate the globe using magnetic maps by sensing the planet's magnetic field at varying speeds.
Nerve damage can lead to severe and long-lasting effects, including depression. Researchers have developed new technology to repair and reconstruct damaged nerves using simple electrical circuitry in implants. This innovation has the potential to benefit people with injuries and neurodegenerative diseases.
A team of researchers has devised a novel micro heat engine that can produce both high efficiency and high power at maximum efficiency, overcoming the Carnot limit. The study used a tiny gel-like colloidal bead and a laser beam to direct its motion, achieving an efficiency close to 95%.
Researchers develop device capturing airborne droplets and aerosols while allowing light and sound transmission. The innovation offers a sustainable solution to preventing airborne infection without disrupting economic activities or daily face-to-face interactions.
Researchers have discovered a rare electronic state in five-layer graphene, exhibiting both unconventional magnetism and ferro-valleytricity. This multiferroic state could enable ultra-low-power, high-capacity data storage devices for classical and quantum computers.
A UNIGE team has developed an electrical device that can activate and accelerate chemical reactions using a simple electric field. The device, called an electrochemical microfluidic reactor, enables chemists to control chemical reactions with ease, reducing the need for complex strategies and resources.
A research team at UNIST has developed a groundbreaking stretchable high-resolution multicolor synesthesia display that generates synchronized sound and light. This technology shatters preconceived boundaries in multifunctional displays, offering unparalleled optical performance and precise sound pressure levels.
Researchers at Tokyo University of Science have discovered a method to generate molecular ions from an ionic crystal by bombarding it with positrons. This breakthrough could lead to new applications in materials science, cancer therapy, and quantum computing.
Researchers have created a magnetoelectric material that can directly stimulate neural tissue, potentially treating neurological disorders and nerve damage. The material generates an electric signal that neurons can detect, overcoming previous limitations.
Scientists have probed electron dynamics in liquids using intense laser fields, retrieving the electron's mean free path and gaining a deeper understanding of ultrafast processes. The research opens up new avenues for studying liquids and their role in chemical reactions.
Researchers at the University of Illinois have successfully tuned graphene surface friction using external electric fields, allowing for dynamic control of friction. This breakthrough could lead to reduced energy consumption in nano- and micro-electromechanical systems and mitigate wear and corrosion of sliding surfaces.
Researchers propose standardized criteria for radiative cooling performance evaluation to improve reliability and comparability. The technology uses the sky as a heat sink to achieve cooling below ambient temperatures.
Scientists have successfully measured the speed of molecular charge migration in a carbon-chain molecule, revealing a movement of several angstroms per femtosecond. The study used a two-color high harmonic spectroscopy scheme with machine learning reconstruction to achieve a temporal resolution of 50 as.
Researchers found that nematode worm larvae can leap through the air and attach themselves to passing insects when exposed to certain electric fields. They observed dauer larvae consistently moving towards the lid of a petri dish, some reaching it in a fraction of a second.
A new study from the University of Missouri found that poverty, low health literacy, cultural beliefs, lack of infrastructure, and political issues hinder diabetes self-management for Haitian migrants. The researchers suggest targeted interventions, such as community gardens and healthcare education through local priests.
Dr. Amir Asadi's team embeds patterned nanostructures into high-performance composites to achieve multifunctionality and structural integrity simultaneously. This approach offers a practical and scalable method for creating nanostructured materials with tunable properties, revolutionizing the manufacturing of high-performance composites.
Researchers at UB discovered a new approach to understand insulator-to-metal transitions, resolving discrepancies with the Landau-Zener formula. The study's 'quantum avalanche' theory explains how electrons can flow between bands in an insulator, providing clarity on the phenomenon.
Researchers at Rice University have discovered a metal oxide that can enable terahertz technology for quantum sensing. The material, strontium titanate, exhibits unique properties that allow it to interact strongly with terahertz light, forming new particles called phonon-polaritons.
A KAUST-led team has developed a proton-mediated approach that produces multiple phase transitions in ferroelectric materials, potentially leading to high-performance memory devices. The method enables the creation of multilevel memory devices with substantial storage capacity, operating below 0.4 volts.
Researchers at KAUST studied the use of high voltages to control charged particles in flames, which could lead to improved flame stability and reduced soot formation. The team developed a simulation to understand this phenomenon and tested its predictions by studying a flame inside a cavity exposed to electric fields of up to 2,500 volts.
A research group led by Kyoto University collected data on gamma-ray glows from thunderstorms, which may help explain the origins of lightning. The team proposes that high-energy particles from space could trigger lightning discharges.
Researchers discovered that microscopic Caenorhabditis elegans worms can use electric fields to jump across Petri plates or onto insects, allowing them to attach themselves. This behavior is made possible by the natural electric charge of pollinators like bumblebees and hummingbirds.
Researchers from University of Toronto Engineering, Dalhousie University, Iowa State University, and Peking University have successfully controlled the motion of dislocation in a single-crystalline zinc sulfide using an external electric field. This discovery has significant implications for improving the properties and manufacturing p...
Researchers at Oak Ridge National Laboratory have developed a novel method to transform normal insulators into magnetic topological insulators using electric fields. This breakthrough could lead to high-speed, low-power electronics with reduced energy consumption.
Researchers have discovered anomalous quantum oscillations in twisted double bilayer graphene, which exhibit periodic behavior with the inverse of magnetic field. The oscillations are tunable by electric field and qualitatively reproduce calculations based on a phenomenological model.
Researchers have developed a meta-holographic display that generates holograms in both the visible and ultraviolet spectral regions. The breakthrough overcomes previous limitations and enables applications in security technologies such as anti-counterfeiting measures.
Scientists have developed a new dynamic probe to measure electric interactions between molecules and the environment. Using ultrashort terahertz pulses, they mapped the optical absorption of molecules in an external electric field, revealing the strength and dynamics of these forces.
Researchers have developed a method to generate mid-infrared pulses with dual-wavelength spectral shaping, enabling flexible tunability in both temporal and spectral domains. This allows for enhanced High-Harmonic generation (HHG) control, opening new possibilities for applications such as electron dynamics and light-matter interaction.
Researchers fabricated 2D perovskite solar cells based on molecular ferroelectrics, achieving the highest open circuit voltage and best efficiency among 2D Ruddlesden-Popper perovskite solar cells. The introduction of ferroelectricity improved charge transport and device performance.
Researchers propose a new bonding theory that illustrates how each boron atom satisfies the octet rule and how alternating σ bonds further stabilize the 2D sheet. The theory introduces a new form of resonance, allowing delocalization of σ electrons within the plane.
Physicists at FAU have successfully measured and controlled electron release from metals in the attosecond range using a special strategy. This achievement could lead to new quantum-mechanical insights and enable electronic circuits that are a million times faster than current technology.
Researchers used microscopy techniques to study polyfluorene chains and found that intra-chain aggregation causes green emission, which disappears when the chain unfolds. The team also discovered a novel optomechanical force acting on some chains, originating from van der Waals interactions and excitonic coupling.
A team of researchers has developed a method that uses electric stimulation to accelerate wound healing, making it possible for wounds to heal up to three times faster. The technique involves applying an electric field to damaged skin, which helps guide skin cells in the same direction, promoting faster healing.
Researchers from the University of Manchester have discovered that graphene displays a remarkably strong response to magnetic fields, reaching above 100% in standard permanent magnets. This is a record magnetoresistivity among all known materials, attributed to the presence of Dirac fermions in high-mobility graphene.
Human macrophages use Siglec-14 receptors to recognize and engulf carbon nanotubes, leading to inflammation. The discovery could pave the way for developing safer carbon nanotubes and therapies to prevent inflammatory diseases.
Researchers from Japan have synthesized two di-superatomic molecules composed of Ag and evaluated the factors involved in their formation. The study found that a twist between the two icosahedral structures stabilizes the nanocluster by shortening the distance between them. Additionally, the presence of Pd and Pt central atoms was foun...
Researchers have discovered a novel form of ferroelectricity in a single-element bismuth monolayer that can produce regular and reversible dipole moments. This breakthrough expands the scope for non-volatile memories and electronic sensors.
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 utilize liquid crystal droplets to visualize electric field distribution within microelectrodes, revealing rotational and translational behaviors under applied voltage. The technique provides high spatial resolution and detection accuracy, enabling defect location analysis.
Researchers developed a machine learning model that maps graphene-gas molecule van der Waals complex bonding evolution for selective gas detection. The model achieved 100% accuracy in distinguishing between different atmospheric environments, showcasing its potential for environmental monitoring and non-invasive medical diagnosis.
Scientists at EPFL and IBM have developed a new type of laser using lithium niobate, enabling precise distance measurements in LiDAR applications. The hybrid integrated tunable laser offers low frequency noise and fast wavelength tuning.
The team creates software and hardware for a 4D printer that can control shape-changing materials in response to external magnetic fields or mechanical deformation. This technology enables the design of soft robots, smart sensors, and substrates with self-healing capabilities.
New study by Curtin University researchers finds that silicon, gold, and copper can trap and destroy the spike proteins of SARS-CoV-2, likely killing the virus. The materials can be used in air filters, coatings, or fabric to capture coronaviruses and prevent infection.
Scientists from NC State University have discovered a way to manipulate the flow of heat through ferroelectric materials by applying different electric fields. The study, published in Advanced Materials, found that varying electric field strengths, types (AC/DC), time, and frequency can alter the thermal properties of these materials.
Researchers find that electrical discharge in Martian dust storms could be a major driving force of the planet's chlorine cycle. The study reveals high yields of chlorine gases from common chlorides when electrified by Martian conditions, indicating a promising pathway for converting surface chlorides to atmospheric phases.
Researchers have demonstrated a new type of quantum bit, called 'flip-flop' qubit, which combines the properties of single atoms with easy controllability using electric signals. The qubit is made up of two spins belonging to the same atom and can be programmed by displacing an electron with respect to the nucleus.
Bacteria can survive antibiotics without acquiring new genes or mutating existing ones by maintaining high electrochemical energies. These high-energy cells exhibit a wide range of energy levels despite being in a state of arrested growth, enabling them to adapt and spread rapidly.
The São Paulo School of Advanced Science on Cryogenic Electron Microscopy will be held at the University of São Paulo from July 10-27, 2023. The event will cover theoretical and practical foundations of advanced CryoEM techniques, featuring renowned researchers and hands-on practical sessions.