Articles tagged with Electric Fields
Scientists at Brookhaven National Laboratory discovered nanoscale asymmetries and charge preferences in ferroelectrics, explaining operational limits. These findings open new pathways for ferroelectric technology, despite material fatigue and intrinsic charge preferences.
Researchers simulated DNA knots and their dynamics using electric fields and optical tweezers, enabling controlled movement of the knot. This study provides useful information for setting up new experiments to control DNA knot movement.
Researchers identify regulatory molecules involved in creating powerful electrical fields in electric fish, found only in fish and evolved independently half a dozen times. The study reveals a common genetic basis for the electric organ across six diverse species, highlighting convergent evolution in these fascinating creatures.
Scientists at Southeast University propose a scheme to control optical steady behavior in GaAs quantum well structures via nonradiation coherence. The study reveals multi-stability and optical bistability, with the ability to convert between these states by adjusting phase differences in polarized electric fields.
Researchers at NIST and University of Michigan develop a new method to image electric fields at resolutions far below RF wavelengths using laser light and rubidium atoms. The technique maps RF field strength as a function of position at resolutions as low as one-hundredth of an RF wavelength, far below normal antenna limits.
Scientists at the University of Arizona have developed a way to control graphene's crystal structure using an electric field. This breakthrough could lead to the creation of faster and more versatile transistors, which would enable faster computing and new applications for graphene in microelectronics.
Researchers at Purdue University developed a nanotube coating that significantly reduces the voltage required for mass spectrometers, allowing for miniaturization and increased portability. The technique simplifies analysis by nearly eliminating background noise, making it gentler on fragile molecules.
University of Cincinnati researchers discovered that high-frequency electrical stimulus increased blood vessel network growth by up to 50%, leading to enhanced wound closure. The team developed a specialized antenna for localized application and filed a provisional patent for their design.
Scientists have developed a new method to control magnetism using an electric field, reducing heat generation and increasing memory density. This innovation has significant implications for the development of more efficient electronic devices, such as MRAM and logic chips.
Researchers have successfully switched on and off robust ferromagnetism close to room temperature using moderate electric fields. The new magnetic switch has the potential to revolutionize spintronics and data storage technologies with its ability to control magnetization at low power.
Researchers at Case Western Reserve University have found that individual cells in the hippocampus use small electrical fields to stimulate and synchronize neighboring cells, spreading activity layer by layer. This discovery suggests a possible novel target for seizure-blocking medicines.
The JILA team has developed a method to spin electric and magnetic fields around trapped molecular ions, enabling the first measurement of an electron's electric dipole moment. This technique has major implications for future scientific understanding of the universe and may also be useful in quantum information experiments.
A team of scientists at Berkeley Lab has developed a new material that exhibits the highest shape-memory effect ever recorded in an oxide material. This breakthrough discovery opens up exciting possibilities for future nanoelectromechanical devices and other state-of-the-art nanosystems.
Scientists at Vienna University of Technology have discovered a way to couple electricity and magnetism in materials, opening up possibilities for new electronic devices such as amplifiers, transistors and data storage devices. The breakthrough involves switching magnetic excitations with an electric field in a material called DyMnO3.
Scientists successfully sort individual conformers of a molecule using an electric field, showing that their spatial structure affects their chemical reactivity. The new method provides insight into fundamental reaction mechanisms with potential applications in chemical catalysis and molecule synthesis.
A new genus of electric fish, the Akawaio penak, has been identified in the upper Mazaruni River in northern Guyana. The discovery represents a significant finding for biodiversity research, as the region is a hotspot for unique and isolated species.
Researchers have used computer simulations to demonstrate a universal increase in electrical conductivity of many materials under strong electric fields. This finding has significant implications for systems in electrochemistry, biochemistry, and electrical engineering.
Researchers at UC Davis have discovered that whole cells and cell fragments orient and move in response to electric fields, with two distinct pathways identified. These findings could lead to new ways to heal wounds and deliver stem cell therapies.
Researchers found a new class of dust motion on the moon, where charged particles swarm like bees around partially shaded regions. This phenomenon creates oscillations over 1-10 meter-sized shaded regions, with dust bouncing back and forth between sunlit areas.
A research team at Caltech's Jet Propulsion Laboratory has found a way to effectively control erosion of Hall thruster walls by shaping the engine's magnetic field. By minimizing the effect of plasma on the magnetic field lines, they demonstrated 100 to 1,000 times less wall erosion when using magnetic shielding.
Researchers at the University of Michigan developed a new reflective color display technology that can lock in color and reduce power consumption. The technology uses nanoscale metallic grooves to funnel light into specific wavelengths, resulting in vibrant colors that remain true regardless of viewing angle.
Scientists have found a new dynamic process in liquid crystal cells triggered by strong electric fields. The theory of spatio-temporal chaos explains this effect, which affects the electro-optic switching phenomenon used in devices.
Researchers enhance local electric fields around nanorods using metal grooves to improve surface-enhanced Raman scattering (SERS) intensity. The nanorod-groove system produces larger electric fields than individual nanorods or traditional systems, increasing SERS sensitivity and accuracy.
A pre-cracked parallel-plate capacitor model is developed to analyze the role of electrostatic tractions in fracture and electric sticking behaviors. The study reveals a new fracture criterion based on energy release rate and crack opening, showing bifurcation behavior between mechanical and electric displacements.
Researchers used electron holography to capture images of electric fields created by ferroelectric materials' atomic displacement. This technique could guide scaling up these materials and ushering in a new generation of advanced electronics.
Scientists have extended the trapped particles' useful life more than tenfold by using a refined technique for trapping and manipulating nanoparticles. The new approach, which involves a control and feedback system that nudges the nanoparticle only when needed, increases the lifetime of the particle while reducing its tendency to wander.
Researchers at ORNL and Yale created a nanopore with radio-frequency electric field to trap segments of DNA and other biomolecules. The 'aqueous virtual pore' allows for controlled movement of DNA through the nanopore without physical walls.
Researchers at Vanderbilt University have identified a major barrier to faster graphene devices, finding that charged impurities on the surface of graphene scatter electrons. By using electrically neutral liquids, they achieved record-levels of room-temperature electron mobility, three times greater than previous graphene-based devices.
Sawfishes use their saws to impale prey on rostral teeth and detect electric fields, enabling agile hunting in murky waters. Their unique sensing abilities challenge traditional views of these critically endangered fish.
Researchers from Duke University and Boston College created a metamaterial that enhances magnetic forces without harming biological tissues or damaging electrical equipment. This breakthrough could lead to more efficient and safer applications of electromagnetism in devices such as magnetic levitation trains.
A team of researchers at NC State University has discovered the mechanism behind high-speed energy storage in capacitors using a PVDF polymer. This finding could lead to more powerful and efficient electric cars that can accelerate quickly, rivaling gasoline-powered sports cars.
Engineers at the University of Washington have discovered ferroelectricity in the walls of arteries, a finding that could have significant biomedical implications. The study found clear evidence of ferroelectric switching in a sample of pig aorta, which may also apply to human tissue.
Researchers at Kyoto University have discovered a way to create ultra-high-speed transistors and high-efficiency photovoltaic cells using terahertz pulses. The study found that exposing gallium arsenide to a single-cycle terahertz pulse increased electron density by an astonishing 1,000-fold.
Researchers have discovered a new method for heating materials and creating new states of matter using proton beams. The high-intensity laser focus enabled the creation of well-focused proton beams with unexpected curved trajectories.
Researchers at Georgia Tech discovered that a strong electric field can induce solidification in liquid droplets of formamide, forming crystallites. The study used molecular dynamics simulations to track the evolution of materials systems and found that increasing the field strength led to shape transitions and eventually solidification.
Researchers have developed a novel X-ray technique to image atomic displacements in materials, revealing that multiferroics exhibit magnetic and electric polarization due to relative charge displacement. The discovery has significant implications for designing multiferroic materials for practical applications.
Researchers developed a multiferroic material that reacts to both magnetic and electric fields at room temperature, fulfilling a long-held dream. The material's ferromagnetic properties were demonstrated using X-ray magnetic circular dichroism, paving the way for more efficient data storage and logical switches.
Researchers found that uneven temperatures in semiconductors can create electronic whirlpools and sideways magnetic fields, leading to a new effect on thermopower efficiency. The discovery could improve the efficiency of commercial semiconductor devices
Researchers from NIST have created a new method to make neutral atoms behave as if they are charged particles in an electric field. This allows for the simulation and study of fundamental electrical phenomena, including superconductivity and the quantum Hall effect. The synthetic electric fields mimic the behavior of charged particles ...
Scientists have discovered a way to extinguish fires using electrical waves, which could provide a new genre of fire-fighting devices. The technology could allow firefighters to put out fires remotely and save water, making it a promising solution for fighting fires in enclosed spaces.
Researchers at Berkeley Lab have enhanced spontaneous magnetization in special versions of bismuth ferrite, creating a stable nanoscale mixture of rhombohedral and tetragonal phases. This allows for electric control of magnetization at room temperature, opening the door to spintronic devices.
Researchers at the University of Michigan have designed a ferroelectric material system that spontaneously forms small nano-size spirals, reducing power needed for polarization switching. This breakthrough has the potential to create memory devices with faster write speeds and longer lifetimes than current technologies.
Researchers find that weak electrical fields in brain help neurons fire together, even if they're not physically connected. The findings suggest an additional form of neural communication through extracellular space.
Researchers at JILA have created a terahertz radiation source that is unusually efficient and less prone to damage than similar systems. The technology uses ultrafast lasers and semiconductors to produce high-intensity output, making it suitable for applications such as detecting trace gases or imaging weapons.
Researchers at McGill University have discovered a way to control the piezoelectric effect in nanoscale semiconductors called quantum dots. This enables the development of incredibly tiny new products with potential applications in solar power and nanoelectronic devices.
Scientists at Rutgers University discovered a material where an electric field controls the overall magnetic properties, leading to ultra-dense data storage. The effect could revolutionize small-scale magnetic bits and potentially lead to more dense storage devices than current terabyte discs.
A NIST-developed nanofluidic device separates and measures nanoparticles of different sizes, offering a faster and more economical approach to nanoparticle sample preparation. The device's tailored resolution and surface chemistry enable the sorting of complex nanoparticle mixtures.
A new DNA delivery method has been discovered by Virginia Tech chemical engineers, which enhances the delivery of genetic material into cells. The method uses hydrodynamic effects to uniformly deliver DNA over the entire cell surface, resulting in a greatly enhanced transfer of genetic material.
Scientists at Johns Hopkins University create method for pinpoint delivery of molecules to individual cells, enabling targeted cancer treatment. The technique uses gold nanowires coated with tumor necrosis factor-alpha, which triggers specific cellular responses without affecting surrounding cells.
A small electric field accelerates ceramic product formation at lower temperatures and strengthens the material. The researchers achieved a 63% reduction in grain size, resulting in a stronger ceramic product.
Researchers at JILA have demonstrated a new tool for controlling ultracold gases and ultracold chemistry by applying small electric fields. The study shows that the electric field spurs a dramatic increase in chemical reactions, with molecules reacting faster when approaching each other head-to-tail parallel to the applied field.
A team of researchers from Virginia Commonwealth University has identified a new theoretical approach to simplify the synthesis of hydrogen fuel storage materials. An external electric field can significantly improve the thermodynamics and reversibility of the system, making it an ideal energy carrier.
The National Science Foundation grant will help scientists study the response of amoebae to electric fields, which could reveal genes and molecules responsible for detecting these signals. This knowledge could have implications for wound healing and tissue engineering, as well as basic science research.
Physicists at ETH Zurich have successfully manipulated molecules of hydrogen using electric fields, leveraging the shape of nanoscopic magnetic islands for control. This breakthrough enables new dimensions of control in magnetic device design and could revolutionize data storage.
The Gravity and Extreme Magnetism Small Explorer (GEMS) mission, led by NASA's Goddard Space Flight Center, will measure cosmic X-ray polarization. It aims to detect dozens of sources and provide insights into extreme environments, such as black holes and supernova remnants.
Giant Rydberg molecules are formed by two interacting atoms due to fluctuations in electron orbitals, allowing for electric field manipulation and control over molecular properties. The discovery brings researchers closer to developing new quantum devices that combine isolated atomic systems with advances in microelectronics.
A team of researchers from Berkeley Lab has made a breakthrough in controlling the electric and magnetic properties of a multiferroic material by applying electric fields. The study uses calcium-doped bismuth ferrite film, creating p–n junctions that can be created, erased, and inverted with ease.
Physicists at Brown University have introduced a novel procedure to sequence human genomes by slowing down the DNA's movement through openings using magnets. This approach allows multiple segments of a DNA strand to be threaded simultaneously through numerous tiny pores, enabling accurate reading of base pairs.
Researchers led by Prof. Boris Rubinsky developed a technique using irreversible electroporation (IRE) to destroy cells responsible for restenosis in arteries. IRE successfully destroyed almost all cells in less than 23 seconds with no damage to other structures.
Researchers create handheld device to recognize and report on environmental or medical compounds using biologically tagged nanowires and integrated circuit chips. The method allows for accurate placement of nanowires with less than a micron accuracy, enabling simultaneous detection of different pathogens or diseases.