Articles tagged with Electric Current
Researchers from University of Warwick investigated high-rate cycling on Lithium Iron Phosphate Cylindrical Cells, discovering increased current capabilities of up to 4.4 times manufacturer's claims. Thermal fatigue was identified as the driving mechanism for jelly roll deformation, which can be mitigated with convection cooling.
Researchers at University at Buffalo have developed a new, two-dimensional transistor made of graphene and molybdenum disulfide that requires half the voltage of current semiconductors. The device can handle a greater current density, making it key to meet the demand for power-hungry nanoelectronic devices.
A new magnetic memory device based on spintronics has been developed to enhance the energy efficiency of SOT-MRAM. The device uses ultrathin iron germanium telluride material that switches from a hard magnet to a soft magnet when a small current is applied.
A new study published in EPJ B reveals how complex dynamics in branching networks of neurons can be predicted to trigger episodes of epilepsy. The team's findings could lead to the development of better early warning systems for patients.
Researchers have discovered a new chemical design principle for exploiting destructive quantum interference to create a six-nanometer long single-molecule switch with an enormous on/off ratio. The approach enables the production of stable and reproducible single-molecule switches at room temperature.
Researchers at University of California San Diego have created a flexible, rechargeable silver oxide-zinc battery with areal energy density five to ten times greater than state-of-the-art batteries. The device can be used in wearables and soft robotics.
Purdue University engineers have demonstrated a way to disguise which transistor is which by building them out of a sheet-like material called black phosphorus. This built-in security measure would prevent hackers from getting enough information about the circuit to reverse engineer it.
Researchers at Incheon National University developed a novel control strategy to optimize current delivery in multi-Tx wireless charging, enabling real-time adjustment and maximizing efficiency. This breakthrough can improve the performance of robots and electric cars by reducing battery size and weight.
Researchers have developed a gallium arsenide-based ferromagnetic semiconductor that can act as memory by quickly switching its magnetic state in the presence of an induced current. The new material suppresses instability and lowers power consumption, offering highly efficient memory.
Scientists at the University of Graz successfully transfer single organic molecules along a specific direction on a silver surface, demonstrating precise control over their movement. The experiment uses electrostatic forces to move molecules up to 150nm with high precision and speed.
A new chip has been developed that can be surgically implanted to read neural signals and stimulate the brain with both light and electrical current. The chip is fully wireless and trimodal, allowing for precise control over targeted regions of the brain.
Researchers discovered that 'bad metals' transform into quasiparticles, allowing them to pair up and superconduct current without resistance. This explains their unusual behavior in low-temperature superconductors.
A new Hastings Center project aims to develop an ethics framework for scientists to anticipate and prevent biases in health data models. The framework will consider data use, bias toward white populations, and equitable interventions to address health disparities.
Large-area flexible organic photodiodes have surpassed conventional silicon photodiode technology in detecting low levels of light across large areas. The devices offer advantages over silicon, particularly in biomedical imaging and biometric monitoring, with performance comparable to rigid silicon photodiodes.
The University of Surrey has developed a Multimodal Transistor (MMT) that can perform complex operations as simple circuits, overcoming long-standing challenges. The device's immunity to parasitic effects enables efficient analogue computation for AI, robotic control, and unsupervised machine learning.
Physicists from UNLV and University of Rochester make breakthrough in quest for room temperature superconductor, enabling infinite and perfect electrical flow with no loss of power. The discovery has implications for energy storage and transmission, and could revolutionize devices, transportation, and society.
A national survey examined e-cigarette use among US adults who were either current or former smokers. The study found that e-cigarette users were more likely to quit smoking compared to non-users.
Researchers at Hebrew University of Jerusalem have made a breakthrough in harnessing DNA molecules for disease detection and electronics. They developed a highly-reliable method to measure electric currents passing through individual DNA molecules, finding that the current flows along the backbone rather than base-pairs.
Researchers have created a fully automated microchip electrophoresis analyzer that can detect organic molecules, including amino acids, in extraterrestrial soil. The device outperforms existing techniques by three orders of magnitude, paving the way for future missions to search for signs of life beyond Earth.
A team of Indian and Japanese physicists have overturned the six-decade old notion that giant magnetic fields in plasma evolve from small scales. Instead, they originate at macroscopic scales defined by the boundaries of electron beams, leading to a new understanding of magnetic fields in astrophysical scenarios and laser fusion.
Researchers developed a new class of medical instruments equipped with advanced soft electronics, enabling simultaneous in vivo measurements and real-time feedback control. The new system conforms better to the body's soft tissue, reducing the length of invasive ablation procedures and exposure to X-ray radiation.
Scientists have successfully moved electrons in an organic superconductor by irradiation of ultrashort laser pulses, generating a polarized net current. The observed effect is attributed to scattering-free current, sensitive to superconducting fluctuations, with potential applications in ultra-fast computing and understanding microscop...
Researchers have developed a new type of magnetic tunnel junction with four resistance states, enabling the creation of multi-level memory devices and neuromorphic memory. This breakthrough paves the way for more efficient spintronics devices.
An international team of researchers has observed how electronic charge excitation changes electron spin in metal oxides in an ultrafast and inphase manner. This breakthrough could lead to the development of new ultra-fast storage systems and information technologies.
Researchers at ETH Zurich and EPF Lausanne have identified 13 possible 2D materials that can be used to build ultra-scaled field-effect transistors, potentially surpassing conventional silicon-based technology.
University of Michigan engineers have created centimeter-sized robots capable of more than ever before, leveraging origami principles to enhance their speed, agility, and control. The microbots can form complex shapes, complete tasks, and reconfigure into new shapes up to 80 times per second.
A recent study published in Nature Astronomy reveals the location of energy release in solar eruptions, finding that relativistic electrons are accelerated in a specific region known as the magnetic bottle. This breakthrough confirms a theoretical model and provides new insights into the complex process of solar flares.
A team of researchers has presented a new look at the 'central engine' powering a massive solar flare, revealing an enormous electric current sheet and magnetic bottle-like structure. The study offers the first measurements characterizing the magnetic field and particles at the heart of the explosion.
Researchers at the University of Michigan have discovered a method to stabilize plasma compression using twisted magnetic fields. The technique reduced escaping plasma tentacles by 70% and improved conditions for studying extreme plasma states.
Scientists have demonstrated a 'hammer-on' effect in crystals by switching the frequency of atomic motions with an impulsively generated electric current. The technique allows for faster playing and legato, similar to rock guitarists using the hammer-on method.
Researchers at Bar-Ilan University have developed a structure that can support exponentially many discrete magnetic states, opening the door to ultra-high-density magnetic memory and novel computing applications.
Researchers at the University of Texas at Austin have created a 'room-temperature all-liquid-metal battery' that combines the benefits of existing options. The battery can provide more energy, increased stability and flexibility without the limitations of solid-state batteries.
Researchers have successfully observed Josephson oscillations in a 2D Fermi gas, providing new insights into the nature of strongly correlated quantum systems and their potential to revolutionize power distribution through room temperature superconductors.
Scientists at NIST have developed a novel instrument that can make three kinds of atom-scale measurements simultaneously, helping researchers uncover new knowledge about special materials crucial for developing the next generation of quantum computers and communications. The instrument combines an atomic force microscope, scanning tunn...
Scientists have successfully fabricated red LEDs using indium gallium nitride, a material that can emit green, yellow, and red light. The developed LEDs offer improved stability at high temperatures compared to current InGaP-based devices.
Researchers found a new superconducting system that enables magnetic flux quanta to move at velocities of 10-15 km/s, breaking the limit of type II superconductors. This discovery opens up possibilities for quantum information processing and single-photon detection.
Thermophones enable creation of fully controlled arrays from thin metal films attached to wires, paving the way for new sound technologies including home cinema systems. Researchers demonstrate improved sound control and richer sound fields compared to traditional arrays.
The study elucidates the mechanism of hydrodynamic power generation using spin currents in micrometer-scale channels, improving power generation efficiency drastically with smaller flow sizes. The researchers also demonstrate the feasibility of applying this technology to spintronics-based nanofluidic devices and flowmeters.
Multiple transpolar auroral arcs are formed by plasma flow shears and electrical currents along the Earth's magnetic field. The study reveals insight into coupling processes in the Earth's magnetotail under a northward interplanetary magnetic field.
A new self-powered alarm system detects forest fires by harvesting energy from moving tree branches, reducing the need for maintenance and increasing efficiency. The MC-TENG technology converts mechanical energy into electricity, enabling continuous monitoring of fire and environmental conditions.
A recent expert review published in the Health Physics journal concludes that exposure to 5G wireless networks within current limits poses little or no risk of adverse health effects. The Committee on Man and Radiation (COMAR) estimates the likelihood of unknown health hazards at these levels to be very low, if they exist at all.
Researchers synthesized Nb2O5 nanotubes on carbon cloth via a simple hydrothermal process, achieving high reversible capacity of 175 mAh/g and energy density of 195 Wh/kg. The material shows good conductivity, reduced volume expansion, and flexible operation conditions.
A survey study in England found that e-cigarettes are perceived as at least as harmful to health as regular cigarettes, potentially deterring smokers from switching. The study aimed to address the growing concern of misperceptions about e-cigarette safety.
Researchers at the University of Nottingham have developed a new treatment for Tourette Syndrome, using repetitive nerve stimulation to reduce tic frequency and intensity. The study shows promising results, with participants experiencing significantly reduced tics and urge-to-tic symptoms.
Researchers at PRISMA+ Cluster of Excellence and Helmholtz Institute Mainz propose a realistic path to demonstrating parity violation in molecules. They develop a special NMR measurement variable and carry out complex theoretical analyses to calculate the expected effect within the molecule.
Experts from Regenstrief Institute, Mayo Clinic and The Pew Charitable Trusts call for urgent action to address patient matching rates, which vary widely. The correct sharing of electronic health data among healthcare providers is crucial for identifying COVID-19 infected individuals and supporting future vaccination efforts.
Researchers explore high-intensity lasers to create plasmas for studying quantum electrodynamics, a lesser-studied corner of particle physics. The findings could lead to advances in fundamental physics and scanning technology.
Scientists at KIT have developed a programmable biohybrid material system that uses bacteria to generate power. The system consists of a nanocomposite and the Shewanella oneidensis bacterium, which produces electrons. The team achieved controlled electron flow with increasing bacterial cells on the conductive matrix.
Scientists analyzed tiny tungsten ditelluride crystals and detected characteristic oscillations indicating current flows along narrow edges, supporting theoretical predictions of higher-order topological material properties.
Scientists create a novel, metal-free method to selectively introduce Fluor into aliphatic C-H bonds, enabling the efficient synthesis of complex fluorinated compounds. The approach combines iodine catalysis and photochemistry, offering a greener alternative to existing electrophilic fluorination methods.
Researchers at KAIST have developed a graphene-based active spintronic component that efficiently generates, controls, and detects spin currents. By stacking graphene on top of 2H-TaS2, they increased the spin-orbit coupling of graphene, paving the way for its use in spintronic applications.
A new computational approach calculates the quasi-Fermi levels in molecular junctions, offering a better understanding of semiconductor devices at the nano-scale. This breakthrough could enable more accurate descriptions of underlying physics and improve the efficiency of nano-scale transistors.
Researchers have successfully modified brain activity using non-invasive techniques and characterized its dynamics. The study provides foundational knowledge for future technologies that may expedite cognitive processes and enable adaptive teaming neurotechnologies.
Texas A&M researchers have developed a way to strengthen 3D printed parts by welding adjacent layers together using plasma science and carbon nanotube technology. The new technology increases the reliability of final parts, making them comparable to injection-molded parts.
Researchers propose refocusing dark matter detector efforts to seek out newly suggested types of dark matter signals that may have been overlooked. This includes absorption-related processes and energy signatures in the MeV range, which could be more common than previously detected signals.
Researchers at Texas A&M University have developed a technology that sends small electrical currents to the fingertips of someone operating a robotic arm, allowing surgeons to control their movements more precisely. This can lead to reduced inadvertent injuries and improved surgical outcomes.
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.