Articles tagged with Electrodes
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Researchers recorded neuronal activity in patients with epilepsy using implanted electrodes, revealing that frontal lobe neurons change before a new conscious experience emerges and that medial temporal lobe neurons change one second prior to perception. This study sheds light on the origin of consciousness.
Researchers demonstrate large-scale fabrication of transparent conductive electrode film based on nanopatterned silver, offering high-performance and long-lasting option for use with flexible screens. The silver-based films could also enable flexible solar cells and improve existing flexible displays.
Researchers at EPFL have developed ultra-sensitive sensors using elastic fibers filled with electrodes, capable of detecting pressure and strain. The fibers can be used in smart clothing, prostheses, and artificial nerves for robots, with potential applications including touch keyboards and compression detection.
Researchers at Ruhr-University Bochum found that bioelectrodes containing photosystem I are unstable in the long term due to formation of reactive oxygen species and hydrogen peroxide. This limits their potential for environmentally friendly energy conversion.
Researchers have discovered a way to produce highly conductive electrode materials for supercapacitors sustainably using nanocellulose derived from wood pulp. The new method yields mechanically stable and porous three-dimensional networks with high electrical conductivity.
The ETH Zurich researchers developed nanovalves that can control individual nanoparticles in liquids using electric forces. This technology enables sorting and manipulation of tiny particles such as metal, semiconductor, virus, liposomes, and antibodies.
Researchers at Tokyo Institute of Technology developed a 4.5-nm-long molecule that forms coherent resonant electron-tunneling devices, exhibiting thermal stability similar to traditional materials. The discovery paves the way for future molecular-scale electronic research and addresses limitations in conventional electronics.
A study on epilepsy patients has shown that repetitive transcranial magnetic stimulation (rTMS) can be used to predict which brain regions will be affected by the treatment. This research could lead to individualized stimulation protocols, improving treatment outcomes for conditions like depression.
Researchers at Linköping University have developed a lignin-based fuel cell that converts the chemical energy of forest fuels into electricity without emitting carbon dioxide. The use of conducting polymer PEDOT:PSS as both electrode and proton conductor enables efficient proton-coupled electron transfer reactions.
Scientists at the University of Tsukuba have created an electrode based on 'holey' graphene that efficiently catalyzes the hydrogen evolution reaction in acidic electrolyte, making it cheaper and more effective. The new system outperforms regular non-holey graphene electrodes in acid conditions.
Researchers have developed a control algorithm that regulates electrical current to provide steady sensation in prosthetic arms. The system reduces painful shocks and improves user experience, enabling users to feel touch and pressure, even with electrodes peeling off or sweat building up.
A fractal-shaped electrode design enhances charge delivery for smaller neural stimulation targets, potentially prolonging device lifespan and improving resolution. The new shape facilitates faster Faradaic charge transfer, resulting in more efficient energy use.
Researchers at Carnegie Mellon University created smart walls using conductive paint that can detect human touch, gestures, and appliance usage. The system operates in two modes: capacitive sensing and electromagnetic (EM) sensing, allowing for location tracking of devices and people.
Researchers deciphered the chemistry behind lithium fluoride's formation in SEI, discovering a new method to monitor hydrogen fluoride concentration. This monitoring capability is crucial for future basic science studies and commercial applications.
Researchers have developed thin, flexible polymer-based materials for microelectrode arrays that record brain activity more deeply and with greater specificity. These arrays have been shown to be less invasive and damaging to surrounding cells, allowing for longer recording periods.
Researchers at Caltech have successfully induced natural sensations in a paralyzed man by stimulating his somatosensory cortex with tiny arrays of electrodes. The study could enable people with prosthetic limbs to feel physical feedback from sensors.
Researchers at TU Graz have developed a novel method for creating printed tattoo electrodes that can transmit electrical impulses from human to machine. The electrodes are thin, flexible, and conformable, allowing for accurate measurements over extended periods without restricting patient mobility or comfort.
Researchers detected tDCS-generated electric fields (EFs) deep in the brain using DBS electrodes in patients with Parkinson's disease. The study provided dose-dependent and montage-specific evidence that scalp-applied current penetrates the brain, challenging previous assumptions.
Scientists at PNNL have developed an electrolyte solution that increases the charge/discharge cycles of lithium-metal batteries by up to seven times. This breakthrough enables electric vehicles to drive more than two times longer between charges.
Researchers at the University of Texas at Dallas have developed a high-powered, environmentally safe lithium-sulfur substitute that could drastically lengthen battery life. The new technology improves stability and power density, making lithium-sulfur batteries more commercially viable.
Researchers at MIT have developed a new approach to designing battery materials that could lead to improved ion mobility and reduced reactivity. By analyzing the lattice properties of solid materials, they found a correlation between vibrational frequency and conductivity, allowing for accurate predictions of material properties.
Scientists at TUM found that electrodes are wetted twice as fast in a vacuum than under normal pressure. The liquid spreads evenly from all four sides, reducing electrolyte absorption by ten percent.
Researchers have developed an advanced hydrogen-bromine flow battery that can store electricity from solar farms and discharge it overnight when needed. The battery, designed by the University of Kansas, has a high surface area and could be used in large-scale remote energy storage systems.
Neuroscientists at KU Leuven developed an EEG-based method to objectively and automatically assess speech understanding. The technique, which uses 64 electrodes, can measure brainwaves while a person listens to a sentence and determine whether they have understood it.
The proton battery uses a carbon electrode as a hydrogen store, coupled with a reversible fuel cell to produce electricity. It stores more energy per unit mass than commercially available lithium ion batteries and has the potential to power electric vehicles and medium-scale storage on electricity grids.
Researchers have developed high-density stretchable electrode grids for long-term stable neural recording, overcoming challenges in biocompatibility and mechanical properties. The breakthrough enables crucial applications in biomedical engineering, including diagnosing and treating neurological disorders such as epilepsy.
Scientists at University of Illinois Chicago and Lawrence Berkeley National Laboratory have developed a technique to pinpoint chemical reactions inside lithium-ion batteries. This allows them to understand how batteries operate and identify ways to optimize performance.
Researchers designed a new electrode that mimics the structure of tree branches to boost supercapacitors' performance. The device stores more energy and delivers faster power compared to existing designs.
Scientists at Shinshu University develop a thin and dense connecting layer between electrodes using cubic crystal growth, improving lithium ion battery efficiency and addressing temperature issues.
Researchers used machine learning to decode brain activity during a simple task of distinguishing between BA and DA syllables. The results show that the brain uses specific regions for mental associations related to the task, not just for processing information.
Researchers at UNIST have developed a highly stretchable rechargeable lithium-ion battery based on aqueous electrolytes, using a simple and cost-effective solution process. The breakthrough involves a bioinspired Jabuticaba-like hybrid carbon/polymer composite that retains its electrical conductivity under high strain rates.
Researchers at MIT have developed a new approach to rechargeable batteries using a metal-mesh membrane, which overcomes the limitations of previous ceramic membranes and enables cost-effective power storage for large-scale installations.
Researchers at MIT have developed a system that uses electric fields to manipulate droplets of chemical or biological solutions on a surface. This new approach enables parallel testing of thousands of reactions and could revolutionize the field of biological research.
Researchers at Brookhaven National Laboratory observed an unexpected phenomenon in lithium-ion batteries, where the concentration of lithium inside individual nanoparticles reverses. This discovery could help develop batteries that charge faster and last longer.
Researchers from UBC and UNC Chapel Hill discovered that halogens can increase conversion efficiency of dye-sensitized solar cells by 25%. The presence of halogens accelerates electron transfer, allowing for faster regeneration of the light-absorbing dye.
Researchers have developed a surface acoustic wave (SAW) device that can achieve frequencies six times higher than most current devices, thanks to the use of embedded interdigital transducers (IDTs). The device also boosts output power by 10 percent compared to conventional devices.
Researchers have developed a novel photovoltaic-powered electrolysis device that can operate as a stand-alone platform on open water, producing hydrogen fuel from sunlight and water. The device separates gases using buoyancy-driven product separation, resulting in high product purity without actively pumping the electrolyte.
Researchers have modified lithium-ion batteries to include slits along the electrodes, potentially mitigating battery failure during automobile accidents. The prototype improved energy density and reduced housing material costs, offering a safer alternative for electric vehicles.
Researchers discovered a hybrid electrolyte that combines aqueous and organic characteristics to increase the performance of vertical graphene nanosheets in supercapacitors. The hybrid electrolyte and potassium hydroxide activation improved nanostructure and charge storage capacity, resulting in fivefold improvements in capacitance.
Researchers at The University of Tokyo's Institute of Industrial Science have developed a semi-transparent solar cell that absorbs red and blue light while letting green through. The new material, based on perovskite, is able to retain an impressive power conversion efficiency of around 10% despite being made much thinner.
A team of Army scientists published new findings on modeling insights into battery electrolyte structure and stability, highlighting the importance of tailoring electrolytes to support fast and reversible lithium transport. The research aims to improve battery efficiency and lifespan.
Scientists from ITMO University devised a novel way to address issues with solar cells, including reduced light reflection and overheating. By incorporating glass microparticles into the top electrode, they improved solar cell efficiency by 20%, making it more attractive for industrial applications.
Researchers at Forschungszentrum Jülich observe deposits forming on iron electrodes during operation, revealing a key to improving battery performance. The findings enhance energy density and capacity, paving the way for widespread adoption in mobile applications.
A research team at DGIST has developed an electroluminescent film that is four times brighter than existing ones, using the retro-reflection principle of nocturnal animal eyes. The film can fabricate high luminance electroluminescent light sources by controlling luminescent particle concentrations.
Researchers found that gelatin accelerates the healing of the blood-brain barrier after acute brain injury by reducing microglial cell activation and promoting anti-inflammatory responses. This study has significant implications for the development of surgical treatments and brain implants.
A new study by OHSU researchers suggests that performing brain surgery on patients who are asleep can produce comparable or even better clinical outcomes than procedures conducted while the patient is awake. This approach has improved speech fluency and reduced motor function issues for patients undergoing deep-brain stimulation. The s...
Researchers used neurostimulation to activate brain regions associated with face and color processing, inducing illusory faces and rainbows in a patient. The findings suggest functional and anatomical specificity of these brain regions.
Researchers at Arizona State University have discovered that proteins can conduct electricity like metal through a new technology called recognition tunneling. This finding has potential applications in medical diagnosis and could revolutionize the way we understand protein behavior.
Researchers have developed a paper-based flexible supercapacitor using metallic nanoparticles to increase energy density. The device shows high power and energy densities, and can be folded without affecting conductivity, making it suitable for wearable devices and other applications.
Researchers at CIC nanoGUNE developed a photovoltaic device using magnetic materials as electrodes, increasing efficiency by 14%. The device produces alternating current directly, eliminating the need for transformers. Further improvements are being pursued to build more efficient solar modules.
Drexel University researchers have created a fabric-like material electrode that could help make energy storage devices faster and less susceptible to leaks or fires. Their design uses a thick ion-rich gel electrolyte absorbed in a freestanding mat of porous carbon nanofibers, eliminating the need for flammable liquids.
Researchers at IBS developed first 2D field-effect transistor made of single material, overcoming efficiency limits of current 3D transistors. The new technique uses a polymorphic material, molybdenum telluride (MoTe2), to produce both metal and semiconductor components with low contact resistance.
KAUST researchers have produced detailed 3D visualizations of ionic winds flowing from a flame in response to direct and alternating electric fields. The study reveals that negative ions play a crucial role in shaping the wind dynamics.
Researchers developed a silver micron-particle sintering joining technology that can bond various electrodes, including Cu and Au, at low temperatures. This technology achieves high reliability and low electrical resistivity, contributing to energy saving and reduction of CO2 gas.
UConn chemistry professor Doug Adamson has patented a process to exfoliate pure graphene, a substance that is 100 times stronger than steel. His technology uses a thermodynamically driven approach to un-stack graphite into its constituent graphene sheets.
Researchers developed a titanium dioxide interlayer to boost the performance of photoanodes, increasing photocurrent by more than four times. The design combines nanostructure with chemical doping, promising improvements for green photocatalytic systems.
A team at MIT has carried out detailed tests that resolve the questions surrounding a compound called lithium iodide, a possible solution to some of the lithium-air battery's problems. The study finds that LiI can enhance water's reactivity and interfere with charging, but suggests ways to suppress these reactions to make it work better.
Columbia University researchers successfully demonstrate current blockade using atomically precise molecular clusters at room temperature. The team created a single cluster of geometrically ordered atoms with an inorganic core and positioned linkers to connect it to two gold electrodes, achieving reproducible transport characteristics.
Researchers have developed bendable batteries that can run on biocompatible liquids like normal IV saline solution and cell-culture medium, outperforming most wearable lithium-ion batteries in charge-holding capacity and power output. The batteries' design also enables potential biomedical applications, such as consuming essential oxyg...
Researchers in China have successfully grown ferroelectric thin films with symmetric oxide electrodes, stabilizing flux-closure domains and their periodic arrays. This finding disproves previous theories and opens up new possibilities for the evolution of these structures under external electric fields.