Articles tagged with Electric Current
Automated brain volumetry in memory-impaired patients shows significant differences and systematic biases between conventional and ultrafast 3D T1-weighted MRI sequences. Most regions demonstrated substantial agreement but also significantly different mean values and consistent biases.
Researchers developed a new hand gesture recognition algorithm that surpasses current methods in accuracy, complexity, and applicability. The algorithm combines adaptive hand type classification and a shortcut feature for efficient real-time recognition.
Researchers at Nagoya University developed a scalable method to produce high-temperature superconductors with artificial pinning centers, improving their properties. The technique, known as grain boundary engineering, can help develop stronger, inexpensive, and high operating temperature superconductors.
A new device has been developed that converts sunlight into two promising sources of renewable fuels – ethylene and hydrogen. The researchers found that by optimizing the working conditions for cuprous oxide, a promising artificial photosynthesis material, they can create a more stable system.
A new class of faster and more powerful semiconductors is being developed by UMass Lowell scientists to enhance wireless communication and digital imaging. The $1.7M NSF project aims to improve infrared optoelectronic devices, enabling better intracellular imaging, night vision, and quantum and 5G communication.
Researchers at the University of Malaga have developed a new version of organic electronics that can manage energy consumption more efficiently. The technology, known as spintronics, uses carbon-based molecules to expand electronic material versatility and functionality.
Researchers at Shinshu University developed a novel detection principle for stimulants, including methamphetamine, using electrochemiluminescence (ECL) emission. The method allows for accurate and selective screening of stimulants with high sensitivity and selectivity.
Researchers at Nagoya University have discovered a Ta2PdSe6 crystal with an unprecedented large Peltier conductivity, reaching 100 A cm^-1 K^-1 at 10 K. The team attributes this to the high mobility and low concentration of holes within the crystal.
Researchers at Lawrence Berkeley National Laboratory have developed a new approach to modify the surface of copper catalysts, improving the conversion of carbon dioxide into useful fuels. The technique involves coating the copper with thin films of ionomers, which steer the reaction towards generating carbon-rich products.
A new coil design could mitigate disruption-driven runaway electrons in tokamaks. The SPARC team's innovative coil structure addresses the threat by introducing a non-axisymmetric perturbation that spoils confinement and protects the machine.
Researchers developed a tool to investigate cause of death when skeletonised remains are recovered, providing a breakthrough in forensic lightning pathology. The study identified unique markers of lightning damage deep within the human skeleton, allowing for recognition of lightning strikes even when only dry bone survives.
Researchers reviewed dual-atom catalysts' synthesis, characterization, and electrocatalytic performance, highlighting their advantages over single-atom catalysts. They suggest DACs may bridge the gap between heterogeneous and biocatalysis, worth exploring in the future.
Researchers developed a novel spintronic-metasurface terahertz emitter that generates broadband, circularly polarized, and coherent terahertz waves. The design offers flexible manipulation of the polarization state and helicity with magnetic fields, enabling efficient generation and control of chiral terahertz waves.
Researchers from Oak Ridge National Laboratory have developed innovative technologies in self-healing sealants, precision deicers and quantum-enabled grid security. These breakthroughs aim to improve construction materials, reduce waste in road maintenance and enhance power grid protection.
Researchers discovered a resemblance between magic graphene's superconductivity and high-temperature superconductors, shedding light on the mysterious ceramic compounds. The study provides evidence for unconventional superconductivity in magic bilayer graphene.
Researchers have developed a flexible triboelectric nanogenerator that mimics the movement of seaweed to efficiently convert surface and underwater waves into electricity. The device has been shown to generate power even at low water pressures, making it suitable for powering marine sensors in coastal zones.
Researchers developed a sensitive new way to detect and count transistor defects, which limit performance and reliability. The method works with traditional Si and SiC materials, identifying defect type and number with simple DC measurement.
Researchers at Ural Federal University successfully experimentally determined the optimal thickness of an aluminum layer in a fully solid-state lithium power source. The results will be used to create high-energy batteries with increased operational safety and lower production costs.
New research from Shibaura Institute of Technology reveals that spark plasma sintering produces highly dense MgB2 bulks with improved mechanical and superconducting properties. The resulting samples exhibit superior strengths and high trapped field performance, making them suitable for space applications and electric machines.
A team of researchers from Harvard and MIT observed hydrodynamic electron flow in three-dimensional tungsten ditelluride for the first time using a new imaging technique. The findings provide a promising avenue for exploring non-classical fluid behavior in hydrodynamic electron flow, such as steady-state vortices.
A team from the Russian Quantum Center developed a novel solid-state supersensitive room-temperature magnetometer capable of registering weak electrical sources in the brain. The device successfully detected alpha rhythm, a sinusoidal electric current in the back of the brain, and showed higher sensitivity than existing systems.
Quantum engineers at the University of New South Wales have discovered a new technique to control millions of spin qubits, a critical step towards building a practical quantum computer. This breakthrough uses a novel component called a dielectric resonator to focus microwave power and deliver uniform magnetic fields across the chip.
Researchers at the Faraday Institution have developed a faster and greener technique to recycle lithium-ion battery materials, achieving higher purity and value. The new method uses ultrasonic delamination to separate valuable materials from electrodes, reducing energy consumption and environmental impact.
Researchers at Cornell University have developed a method of magneto-thermal imaging that provides nanoscale and picosecond resolution, previously available only in synchrotron facilities. This innovation enables the study of magnetic properties of materials at unprecedented scales.
Researchers developed a new magnetic memory device using antiferromagnetic materials, offering improved scalability, write speed, and security. The device's unique structure allows for simultaneous writing and reading of data, addressing key challenges in high-performance AI applications.
Scientists from Rensselaer Polytechnic Institute have successfully created a novel optoelectronic phenomenon in MoS2 by breaking its inversion symmetry using strain gradients. This breakthrough demonstrates the potential for remote thermal sensing and opens up new possibilities for designing high-efficiency optoelectronics.
Researchers at Tokyo Tech developed a flexible device capable of rapidly increasing temperature of target tissues without tissue burning. The device overcomes limitations of existing heat-generating devices and opens up possibilities for wide clinical scenarios including minimally invasive endoscopic surgery.
Researchers found that electrons' spin has a significantly greater influence on spintronic effects than previously thought. The study also discovered the orbital moment's contribution to the Edelstein effect, increasing efficiency by at least one order of magnitude.
A new overview article explores innovative strategies for protein sequencing at the single-cell and single-molecule level, enabling critical insights into cell-to-cell variation in organs and tissues. This breakthrough may lead to routine clinical applications for diagnostic and treatment purposes, fulfilling personalized medicine.
Researchers at MIT have discovered a new way of generating electricity using tiny carbon particles that can create a current simply by interacting with liquid surrounding them. This technology allows for electrochemistry without wires, enabling applications such as powering micro- or nanoscale robots and driving chemical reactions.
A joint research project by Shinshu University and Genesis Research Institute found that electromagnetic anomalies occur before earthquakes due to gas-electric interactions. The anomalies are caused by the trapping of fluid in a fault-valve, which eventually cracks and releases charged gas, generating a large current.
Scientists at Tohoku University and Japan Atomic Energy Agency found a persistent rotation of chiral-spin structure in a non-collinear antiferromagnet Mn3Sn thin film. The rotation can be tuned by applied current, offering opportunities for applications like oscillators and random number generators.
The researchers developed a new method for assessing the loading capacity of power transformers, taking into account temperature fluctuations. The study found that using this method, operators can control power systems with higher transfer capabilities, postponing investments in replacing transformers and allowing end-users to use chea...
A Columbia University team designed a high-performance implantable system that can read and modify brain signals, suppressing pathological coupling in epileptic animal models. The multiplex-then-amplify (MTA) system enables simultaneous stimulation of arbitrary waveforms on multiple independent channels.
Researchers have experimentally confirmed that magnetic graphene can generate large spin signals and transfer spin information over long distances. This discovery paves the way for the development of ultra-compact 2D spin-logic devices with strong spin-polarization, promising high-speed and energy-saving electronics.
Researchers created a new type of phototransistor using metal-halide perovskites, exhibiting persistent photoconductivity that mimics synapses in the brain. This breakthrough could lead to more efficient energy usage in computers and sensors for self-driving vehicles.
A new method facilitates accurate analysis of magnetic field effects in complex nanostructures, enabling quantitative criteria for aromaticity. The technique sheds light on unexplained experimental results regarding magnetic shielding inside particles.
A ship's container lost at sea resulted in printer cartridges washing up on coastlines from Florida to Norway, contaminating the environment with metals like titanium and copper. The study used social media sightings and ocean modeling tools to track the spread of the cargo, highlighting the speed and reach of ocean currents.
A team of researchers has successfully developed a highly sensitive magnetoencephalography (MEG) technology that can detect even fast brain oscillations produced in response to single sensory stimuli. This breakthrough enables noninvasive observation of nerve cells transmitting information, shedding light on factors such as alertness a...
Researchers at FSU improved Bi-2212 wires' efficiency by optimizing grain alignment, enabling higher current carrying and more efficient supercurrent flow. This breakthrough has the potential to power next-generation particle accelerators.
Researchers have developed a way to harvest energy from radio waves to power wearable devices, offering a sustainable and continuous energy source. The system consists of stretchable metal antennas that convert ambient radio waves into electricity, which can be used to power health-monitoring sensors.
Researchers at the University of Warwick used social media-inspired algorithms to analyze space weather observations and reveal the lifecycle of substorms. The study shows that these substorms manifest as global-scale electrical current systems associated with the aurora, covering most of the Earth's night-side at high latitudes.
Researchers at UC San Diego have developed a nanoscale artificial neuron device that efficiently carries out activation functions in hardware, reducing computing power and circuitry. The device, which implements the rectified linear unit activation function, can process images and perform edge detection with high accuracy.
Researchers used conductive atomic force microscopy to detect tiny channels for dark currents in solar cell surfaces, revealing the loss mechanism at the interface of silicon heterojunction solar cells. The study showed that these channels are caused by disorder in the a-Si:H layer and lead to trap-assisted quantum mechanical tunnelling.
Researchers at MIT have developed a way to prevent dendrite formation in solid-state lithium batteries, potentially unlocking the potential of high-powered batteries. The team created a semisolid electrode with a self-healing surface, allowing for high current densities without dendrites.
Researchers have found spontaneous electrical currents in Sr2RuO4, a rare form of superconductivity that can't be switched off. The study used muon implantation to detect these currents, which appear when the material becomes superconducting.
Researchers at TU Wien found that thin hBN layers cause excessive leakage currents in miniaturised transistors, making it unsuitable as a gate insulator. The study suggests a need to search for alternative insulator materials to revolutionize the semiconductor industry.
Researchers at Nanyang Technological University have developed a laser system that generates random numbers at speeds over 100 times faster than current technologies. The system uses an hourglass-shaped cavity to create unique patterns, which are then used to generate random sequences of information.
Scientists have developed a smart material that responds to environmental stimuli, such as mechanical pressure or stretching, and can be used to create autonomous grippers. The material's unique properties make it ideal for use in soft robots performing complex tasks or locomotion.
Researchers developed a two-step amination strategy to enhance the intrinsic activity of M-N/C catalysts, leading to improved current density and Faraday efficiency. The new method enabled CO2 electrocatalytic reduction at an industrial level, with a remarkable current density of over 400 mA cm−2.
A new study using the Very Long Baseline Array (VLBA) has refined the distance to Cygnus X-1 and found its black hole mass to be approximately 21 solar masses, exceeding current stellar evolution models. This massive black hole suggests that lower mass loss through stellar winds during progenitor star evolution may have occurred.
Researchers have discovered a promising mechanism to create nanoelectronics components by reducing current to zero in quantum point contacts. The discovery uses external oscillating fields and provides evidence of non-equilibrium phase transitions, enabling precise control of charge transport.
Researchers showed that deepfake detectors can be defeated by inserting inputs called adversarial examples into every video frame, which cause AI systems to make mistakes. The attack still works after videos are compressed. Key findings include high success rates of over 99% for uncompressed and 84.96% for compressed videos.
Researchers use a scanning tunneling microscope to study DNA hybridization, monitoring changes in electronic properties of single molecules. They discovered plateaus in current traces indicating the formation of double-stranded DNA, providing new insights into chemical reactions and potential applications for DNA-based diagnoses.
Researchers at Mainz University have developed an electrolysis process to produce dichloro and dibromo compounds from contaminated soil, reducing the need for toxic chlorine and bromine. The method is broadly applicable, easy to scale up, and can even separate chlorine atoms from banned insecticides.
A recent study using Cereset's HIRREM technology found significant effects on brain network connectivity in military personnel with traumatic stress. The results support the bihemispheric autonomic management model and suggest that regulated connections between hemispheres are associated with improved health and wellbeing.
Researchers at WMG University of Warwick have developed a highly efficient hybrid flow battery technology that can store electricity for long durations at about 1/5 the cost of current systems. This breakthrough enables flexible and zero-emission grid-scale energy storage, making it ideal for widespread commercial adoption.
Scientists have discovered a new light-induced switch that twists the crystal lattice, enabling giant electron currents with nearly zero dissipation. This discovery holds promise for spintronics, topological effect transistors, and quantum computing.
Scientists have successfully controlled spin dynamics in magnetic materials using a technique called resonant inelastic x-ray scattering. By studying thin films of iron as thin as one nanometer, researchers discovered that the thickness of magnetic materials can act as a 'knob' for fine-tuning spin dynamics.
Researchers have developed a new principle for next-generation semiconductor memory development, utilizing nanomagnetism to control data storage. The technology reduces power consumption by up to 60% compared to conventional spin devices.