Articles tagged with Electric Current
Researchers have discovered a new effect called 'RF current condensation' that can stabilize magnetic islands in plasma, allowing for improved control of fusion reactors. By heating the islands with radio waves, scientists can drive electric currents that cause them to shrink and disappear, enhancing stability.
A University of Houston engineer is developing a system capable of supporting 5G infrastructure, enabling faster speeds and greater bandwidth. The $1.7 million grant-funded project aims to improve radio frequency communication capacity and advance power electronics to support the demands of 5G networks.
A new machine learning method can predict battery health with 10x higher accuracy, enabling safer and more reliable batteries for electric vehicles and consumer electronics. The method is non-invasive and uses electrical pulses to measure the response of lithium-ion batteries.
A new study finds electric cars lead to lower carbon emissions overall, even if electricity generation involves fossil fuels, in 95% of the world. In most regions, including Europe and the US, electric cars produce up to 70% fewer emissions than petrol cars.
Researchers at Kyoto University have improved the efficiency of organic solar cells by targeting the molecular backbone of the power-generating layer. The new design approach increased the excited state duration of the electron-accepting component, converting over 70% of light particles into current. Further modifications to the molecu...
Researchers from King's College London develop a digital twin of the heart using computer models to improve diagnosis and prediction of future heart health. The Digital Twin can also inform daily lifestyle choices and provide early warnings for potential risks.
Researchers at Michigan Technological University have created an underwater smart glue prototype that can be activated and deactivated using electricity. The team, led by Bruce Lee, used electrical current to turn off the adhesion of a catechol-containing material, achieving this in just seven seconds.
Researchers at KAUST developed a practical method to visualize the magnitude and direction of current flow through magnetic thin films. By using skyrmions and magneto-optical Kerr microscopy, they directly mapped nonuniform electrical current distribution in layered platinum, cobalt, and tantalum materials.
Researchers developed a black phosphorus transistor with 10-times lower switching power consumption and 10,000-times lower standby power consumption than conventional CMOS transistors. The transistor achieves record-low subthreshold swing values and high on-state current, paving the way to extend Moore's Law.
A new black phosphorus transistor has been developed that shows 10-times lower switching power consumption and 10,000-times lower standby power consumption than conventional transistors. The transistor can replace CMOS transistors with fast and low-power operations.
The study achieved time-resolved measurement of a single magnetic memory event using a tunnel junction, revealing two stages: incubation and actual reversal. The researchers developed a strategy to minimize time fluctuations, reducing the total time for the reversal event to less than 0.3 nanoseconds.
Noninvasive magnetographic imaging of muscle activity allows spatial and temporal mapping of physiological electric currents, enabling studies of the cardiac cycle and lower back pain. This breakthrough method offers diverse applications in medical research and could provide new insights into muscle function and pain mechanisms.
Researchers at UMass Amherst have created an 'Air-gen' device that harnesses natural protein to generate clean energy from atmospheric water vapor, offering a promising alternative to traditional renewable energy sources. The non-polluting technology has significant advantages over solar and wind power, and can even be used indoors.
High-performance electric propellants have a higher enthalpy due to internal energy storage, which affects efficiency. The study predicts the material's conductivity and ionization at extreme temperatures.
Researchers at Northwestern University have developed a new method to visualize the dynamic motion of atoms in atomically thin 2D materials. The technique reveals that sulfur atoms in MoS2 move continuously to vacant areas, causing grain boundaries to separate and leading to material failure.
Researchers developed a new magnetic memory device that could support the surge of data-centric computing, enabling faster and more secure processing. The device uses antiferromagnetic materials and operates with record-low electrical current to write data.
Researchers at the University of British Columbia have demonstrated a new way to control electrical currents in materials by leveraging electron spin and orbital rotation. This breakthrough enables metal-insulator transitions, which could lead to new electronic, magnetic, and sensing applications.
Researchers at Arizona State University have developed bioinspired materials with tailored physical properties for various industries. The new materials are inspired by nature's mechanisms and can be custom-tailored to suit specific needs, offering a cheaper and more efficient alternative to conventional catalysts.
Researchers have identified a link between abnormal calcium release and arrhythmias in heart failure, suggesting new therapies may improve early Ca2+ release. Restoration of AP phase 1 repolarization could mitigate defective excitation-contraction coupling and reduce sudden death risk.
Researchers at Nagoya University have successfully designed a laser diode that emits deep-ultraviolet light at a record-breaking wavelength of 271.8 nanometers. This achievement overcomes previous limitations and enables new applications in healthcare, such as disinfection and treating skin conditions like psoriasis.
Researchers have discovered that organic LEDs (OLEDs) exhibit regions of reduced brightness known as 'switched-back' effects, despite increased applied current. This phenomenon is attributed to negative differential resistance induced by nonlinear electrothermal feedback, which can lead to unstable operation and device breakdown.
Scientists have successfully generated and manipulated spin currents in graphene, a unique material for long-distance spin transport. This breakthrough has the potential to revolutionize the development of efficient and versatile spin-based technologies.
Researchers have discovered that freestanding gold clusters of twenty atoms take on a pyramidal shape with a triangular ground plane and additional triangles. The study reveals the cluster's unusual electronic structure, which is similar to noble gas atoms or aromatic molecules, making them less reactive.
Researchers from MIPT and their international colleagues achieved a breakthrough in nonvolatile memory devices by measuring electric potential distribution across a ferroelectric capacitor. The new memory cell has been shown to endure 10 billion rewrite cycles, surpassing current flash drives.
Researchers in Korea have developed a strategy to transform opaque solar cells into transparent ones, allowing for more efficient energy harvesting. The transparent solar cells have a high-power conversion efficiency of 12.2 percent and long-term stability, making them ideal for turning windows into solar panels.
A team of physicists and cardiologists at Imperial College London have developed a model that explains the chaotic electrical signals underlying irregular heart rhythms. The model predicts which patients are unlikely to benefit from surgery and could lead to more targeted and successful treatments.
A study published in Environmental Research suggests that cell towers should be placed at least 500 meters away from schools, hospitals, and sleeping areas to reduce health risks. The existing laws in the US, however, do not consider environmental effects when siting cell towers.
Physicists at PPPL discovered that halo currents offset eddy current forces in tokamaks, leading to unexpected changes in total vertical forces; this finding could enable designers to contain damaging forces for future fusion facilities like ITER.
Researchers at Osaka University developed a novel receiver that overcomes obstacles in terahertz radiation, enabling record-breaking transmission speeds of 30 gigabits per second. The new technology has the potential to revolutionize next-generation 6G cellular network technology and various other applications.
Researchers have found a new method to identify and manipulate magnetic Weyl semimetals, which could lead to the development of spintronic devices. The new approach uses the relationship between electronic spin and charge to reveal the topological characteristics of these materials.
Researchers created a high-electron mobility transistor with record-low gate leakage current, high on/off current ratio, and high current gain cutoff frequency. The device has the potential to expand bandwidth for wireless communication systems, enabling more information transmission in less battery life.
Physicist Fatima Ebrahimi's high-resolution simulations show that CHI can produce continuous current in larger tokamaks, enabling stable fusion plasmas. The technique creates magnetic bubbles to induce current, which could be used in fusion facilities worldwide
A rapid test for cystic fibrosis has been developed using a 2-minute swiping process that analyzes compounds in perspiration samples, with 98% specificity and 96% sensitivity. The test uses desorption electrospray ionization mass spectrometry and machine learning to identify cases.
Researchers at Tianjin University develop a potential-tuned strategy for efficient synthesis of azoxy, azo- and amino-aromatics via aqueous selective reduction of nitroarene feedstocks over a CoP nanosheet cathode. The method yields products with up to 99% selectivity and 99% yield.
According to a nationally representative survey, about 27.5% of high school students and 10.5% of middle school students reported current e-cigarette use in 2019. The study found that JUUL was the most commonly used brand among high school and middle school students.
A new study suggests that adolescent e-cigarette users are more similar to conventional cigarette smokers than non-tobacco users. E-cigarette use is not associated with an increased risk of current smoking among teens, but its prevalence has risen significantly among youth in recent years.
Researchers from MIPT Laboratory of Topological Quantum Phenomena discovered a way to locally control and manipulate Josephson vortices using a magnetic force microscope. This breakthrough enables the creation of future superconducting quantum computing machines.
Researchers at NTU Singapore developed a tiny quantum communication chip that offers superior security and is 1,000 times smaller than current setups. The chip uses quantum algorithms to form a secure 'quantum key' that is destroyed after transmission.
A team at the University of Wyoming has successfully used the spin Seebeck effect to detect light across a broad optical range. This breakthrough technology has implications for novel spin current-based devices, which could transmit energy and information without significant loss.
A team of researchers from the University of Pittsburgh and Northeastern University received a $1.2M NSF award to develop a BCI system for detecting, assessing, and rehabilitating unilateral spatial neglect in stroke survivors. The system will use EEG monitoring and augmented reality to provide personalized intervention strategies.
Researchers at the University of Pittsburgh have developed a novel electrochemical therapy to treat metal-based implant infections, which are a persistent problem with five to 10 percent failure rates. The new approach damages the microbe cell membrane, increasing susceptibility to antibiotics and eradicating drug-resistant cells.
Researchers at DIII-D National Fusion Facility demonstrated a new approach to injecting microwaves into fusion plasma, doubling the efficiency of critical technique. This method uses novel geometry to deliver substantial improvements in plasma current drive, paving the way for more efficient compact fusion power plants.
Researchers have discovered that injecting frozen hydrogen fuel pellets into a fusion reactor's plasma can help repair tears in the surrounding magnetic field, reducing magnetic island instabilities. This approach may improve the efficiency of future fusion power plants by freeing up resources needed for magnetic stability.
Researchers have created a device that controls spin currents using a double layer of graphene on top of tungsten disulphide. The new technique enables the use of spin currents in transistors, which could be more energy-efficient than traditional electronics.
The study estimates that electronic cigarette use increased from 3.7% to 3.2% among adults aged 18 and older in the US between 2014 and 2018, with a significant rise among young adults aged 18-24 years
Researchers at Lancaster University created a nano-electronic circuit that vibrates on its own when given an electrical current, generating motion directly from the energy. The carbon nanotube wire used in the device oscillated at frequencies too high for human hearing, producing sound waves equivalent to an A string pitched 21 octaves...
Researchers at Max Planck Institute for Chemical Physics of Solids spot axion particles in correlated Weyl semimetal (TaSe2I) below -11 °C. The discovery reveals novel properties of axion particles, which can conduct electrical current in a distinct manner from electrons.
A new study explores how climate change impacts coal-fired power plants' water constraints, threatening regional electricity generation plans. The research highlights three possible strategies to mitigate water limitations, including reducing existing/planned power plants, integrating electricity markets, and adopting dry cooling in no...
Researchers have demonstrated a ternary organic solar cell with a power conversion efficiency of 14.3%, beating the typical drop in fill factor upon increasing the thickness of the active layer. The addition of PC61BM improves hole and electron mobilities, facilitating charge transport and leading to improved efficiencies.
Researchers at the University of Groningen have successfully created a two-dimensional spin transistor in graphene, which uses charge-to-spin conversion to generate spin currents. The spin transistor can be switched on and off using an electric field, enabling the creation of all-electrical spin circuits.
Physicists have developed a novel method to create high-performance spintronic devices using organic molecules, which can be easily configured for different functions. The new fabrication method uses layers of molecules that can be painted or printed onto metals, offering a promising alternative to traditional materials.
Physicists have discovered a new material that significantly increases the conversion rate of spin current to charge current, paving the way for future spintronic applications. The new material is more efficient than any previously investigated material, with potential to reduce energy loss and heat generation in devices.
A European study found that patients with high PRD values (≥7.5 degrees) benefit from implantable defibrillators, with a 75% decrease in mortality risk, while those with lower values see a 31% reduction.
A study from Aarhus University has found that fat pumps in cell membranes create an electrical current, which may play a role in controlling essential processes in the body. This discovery highlights the importance of flippases in maintaining cellular function and suggests potential connections to neurological diseases and Alzheimer's.
Researchers at the University of Pittsburgh have developed a portable breathalyzer that can detect tetrahydrocannabinol (THC) in a user's breath. The device uses carbon nanotubes to measure THC levels and has been shown to be comparable to mass spectrometry methods.
The TAN conference brings together researchers from around the world to discuss the current state of research on heavy elements, including their chemical and physical properties. The conference features prominent scientists who have contributed to the discovery of new elements, including element 118, Oganesson.
A UH engineer offers two winning proposals to the US Department of Energy to enhance the nation's electric grid, focusing on accommodating variable renewable energy generation. His projects include reconfiguring transmission networks and upgrading energy management systems with microgrids.
Researchers have successfully controlled the electrical properties of Weyl semimetals using light, which can be used to create new electronic devices. The discovery was made possible by developing a theoretical framework that explains how light interacts with these materials.
Researchers at the University of Houston have developed a multifunctional ultra-thin wearable electronic device that can be worn on human skin without being noticed. The device has potential applications in healthcare and robotics, allowing it to automatically collect information and relay it back to the wearer.
A new study at the University of Leeds suggests that transcutaneous vagus nerve stimulation (tVNS) may help slow down an important effect associated with ageing. The therapy, which delivers a small electrical current to the ear, has been shown to improve physiological and wellbeing outcomes in over-55s.