Articles tagged with Electric Dipoles
Researchers break thickness limit for lead-free films, discovering a metastable phase that unlocks latent piezoelectric potential. The films exhibit a piezoelectric coefficient four times higher than conventional forms, paving the way for ultra-miniaturized sensors and devices.
Researchers studied dipole eddies in the South China Sea, revealing unique sound-speed structures and acoustic propagation patterns. The team found that warm-core AEs decrease temperature, salinity, and sound speed, while cold-core CEs increase these factors.
The study reveals that relaxor ferroelectrics like lead magnesium niobate-lead titanate (PMN-PT) exhibit improved performance when shrunk down to a precise range of 25-30 nanometers. This 'Goldilocks zone' size effect could enable advanced applications such as nanoelectromechanical systems and energy harvesting.
Researchers developed a method to distinguish between similar odours by detecting small electrical changes in olfactory receptors. This innovation enables more precise sensors for industrial applications, such as odour screening.
Researchers at KAIST introduced a new hybrid device structure with organic photo-semiconductors that expand the absorption range to near-infrared, improving power conversion efficiency. The device achieved a high internal quantum efficiency of 78% in the near-infrared region and improved stability for over 1,200 hours.
Piezoelectric materials are used in sonar and ultrasound applications, but can deteriorate due to heat and pressure. Researchers have developed a technique to depole and repole these materials at room temperature, allowing for easier repair and paving the way for new ultrasound technologies.
Researchers have discovered a new connection between the nanoscale features of a piezoelectric material and its macroscopic properties, providing a new approach to designing smaller electromechanical devices. The mesoscale structures reveal a complex tile-like pattern that aligns dipoles in a specific way under an electric field.
Researchers used ultrafast terahertz Stark spectroscopy to characterize the molecular quantum states involved in the proton pump reaction of bacteriorhodopsin. The study reveals pronounced quantum state mixing in the early electronic and nuclear dynamics, supporting a picture of mixed excited-state characters.
Researchers developed nanodots with single ferroelectric and ferromagnetic domains using multiferroic material BFCO, enabling energy-efficient writing and reading operations. The smaller nanodot showed a single-domain structure, while the larger one exhibited multi-domain vortex structures, demonstrating strong magnetoelectric coupling.
Researchers have discovered a new phase of liquid magnetism in layered helical magnets, where magnetic dipoles behave like 'flattened puddles' with varying alignment between layers. This phenomenon, predicted by a computational model, may explain the unusual electronic behavior observed in these materials.
Researchers discovered a size threshold beyond which antiferroelectric materials become ferroelectric, losing energy storage advantages. At thicknesses below 40 nm, the material becomes completely ferroelectric, while above 270 nm, ferroelectric regions appear.
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 have developed a chemical variation that significantly improves the stability of perovskite thin films in solar cells, achieving efficiencies of up to 24.6%. The new coating, b-pV2F, wraps around individual microcrystals like a soft shell, reducing thermal stress and increasing efficiency.
Scientists from Ural Federal University have proposed a new material for transporting electrons in perovskite solar cells, achieving an efficiency of 12%. The new material is twice as cheap, easier to produce, and has technological advantages over current electron-transport materials.
Researchers at the University of Massachusetts Amherst discovered that uniformly charged macromolecules can self-assemble into large structures through dipole-dipole interactions. This finding highlights the importance of dipoles in biological assembly processes and offers new insights into life's fundamental mysteries.
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.
The study reveals that manipulating the transition dipole moment of excitons in quantum dots can suppress Auger recombination. By combining with external structures, researchers achieved a new way to control the nonradiative process, potentially leading to improved efficiency of QD-based devices.
Researchers at the University of Groningen have successfully trapped molecules of strontium fluoride, setting a new record for molecular trapping. This achievement is significant because it allows scientists to investigate the fundamental laws of the universe, including the asymmetry between matter and anti-matter.
Researchers developed a regioselective magnetization strategy to create semiconducting heteronanorods with chiroptical activities. This approach enables tuning of chiroptical activity through electric and magnetic transition dipoles.
The AF-369 VHF/UHF terrestrial antenna increases useable bandwidth by 80%, providing accurate direction finding across a wide frequency range. This innovation reduces the overall cost and complexity of monitoring systems, enabling critical spatial awareness for intelligence analysts.
Researchers observe native ferroelectric metal in bulk crystalline tungsten ditelluride at room temperature. The material exhibits bistable and electrically switchable spontaneous polarization states, enabling potential applications in nano-electronics.
A research team from the University of Liverpool has discovered that radon atoms provide less favorable conditions for measuring electric dipole moments than radium. The study, published in Nature Communications, used the ISOLDE facility at CERN to accelerate beams of radioactive radon ions and measure their properties.
Researchers have discovered three key paths for coupling magnetism and ferroelectricity, enabling the interaction between spin moments and electric dipoles in solids. This breakthrough has significant implications for materials science and engineering.
Researchers at Northwestern University have confirmed that an electron's charge is perfectly spherical, strengthening the Standard Model of particle physics. The study excluded alternative models that predicted the electron's shape would be asymmetrically squished, potentially revealing unknown heavy particles.
Researchers at UC Riverside successfully used electric dipoles to accelerate electron transfer in one direction while suppressing it in the other. This breakthrough could lead to improved solar cells and energy-conversion devices.
Researchers at Vanderbilt University have created a new class of liquid crystals with enhanced electric dipoles, promising to improve the performance of digital displays. The newly developed liquid crystals also possess a unique 'zwitterionic' structure, which sets them apart from existing materials.
Scientists aim to measure electron's electric dipole moment using sensitive ceramic and SQUID magnetometer. A possible imbalance in matter and antimatter could be explained by this tiny electric dipole moment.