Articles tagged with Electrodes
A new self-powered non-mechanical intelligent keyboard generates electricity from user fingertips, capturing unique typing styles for enhanced computer security. This innovative device uses individual keystroke patterns to identify users and prevent unauthorized access.
Researchers at North Carolina State University have developed a new, wearable sensor that can accurately monitor electrophysiological signals like electrocardiography (EKG) or electromyography (EMG) for long periods. The sensor uses silver nanowires and is more accurate than existing sensors, especially when a patient is moving.
Researchers found that nanowires shorter than 2 micrometres cause no harm to the brain tissue, while longer ones lead to inflammation and neurotoxic effects. The study suggests developing electrodes with smaller and more flexible nanowire coatings for safer neural implants.
A woman with quadriplegia used her thoughts to control a prosthetic arm and hand, achieving 10-degree brain control and grasping various objects. The study's findings indicate that highly coordinated movement can be restored to people with paralyzed arms and hands.
Researchers discovered a rubber-like coating that improves durability of high-capacity silicon electrodes, leading to potential ten-fold increase in battery capacity. The coating softens the particles, allowing them to expand and contract with lithium without fracturing.
Researchers at Drexel University have developed a conductive clay that can be easily molded into various shapes and sizes, representing a significant shift in the production of electrodes for energy storage devices. The clay's high conductivity and plasticity make it an attractive candidate for use in batteries and supercapacitors.
A team of scientists from Arizona State University and IBM have developed a prototype DNA reader that can distinguish individual chemical bases of DNA. The device is thousands of times smaller than the width of a human hair and could make whole genome profiling an everyday practice in medicine.
Researchers at Berkeley Lab have observed the molecular structure of liquid water at a gold surface under different charging conditions using XAS. The team developed a method to determine the arrangement changes of molecules depending on the voltage, shedding light on battery performance and materials science.
Researchers at Chalmers University of Technology have developed a novel osseointegrated implant system, enabling patients to control prosthetic arms with direct bone-anchored connections. The technology allows for long-term stable fusion between man and machine, providing mechanical stability and intimate union.
Researchers at Ohio State University have created a solar cell that can store its own power, reducing the cost of renewable energy. The 'solar battery' combines a mesh solar panel with a battery, allowing for efficient charging and discharging using light and oxygen.
The NIH is developing an advanced electrode array system that will enable researchers to better understand how the brain works through unprecedented resolution and scale. The system, which will pack over 1,000 tiny electrodes, will allow scientists to simultaneously study thousands of neuronal cells in various brain regions during comp...
A new, easy-to-use EEG electrode set was developed to quickly attach on patients, reducing electromagnetic interference and allowing rapid diagnosis of severe brain function abnormalities. The set consists of 16 hydrogel-coated electrodes placed on hair-free areas, making it suitable for emergency care and field conditions.
A comprehensive look at lithium ion battery electrodes reveals that rapid-charging and high-power discharging may not damage the electrode as much as previously thought. The research suggests modifying electrodes or changing charging processes could promote uniform charging and discharging, extending battery life.
Scientists from DTU have created a new technique to produce cheap, flexible and versatile double solar cells using roll-to-roll processing. The method uses 3D ptychography to image the layer structure of the tandem solar cell, which converts 2.67% of incoming sunlight into electric energy.
Graphene-based planar micro-supercapacitors provide a promising solution for on-chip energy storage with high power density and fast charging capabilities. The devices can deliver a superior cycling lifetime of millions of cycles, making them suitable for applications that require high power over a short timeframe.
Researchers investigated the effects of TiOx interlayer thickness on resistive switching performance. The Pt/TiOx (5nm)/ZnO/n+-Si structure exhibits optimal switching characteristics, outperforming other structures.
A new material enables sodium-beta batteries to operate at significantly lower temperatures, lasting longer and reducing the risk of accidental fire. The improved design also reduces costs by using less expensive materials.
Researchers at Cedars-Sinai have created 3-D computer models to map the brain region involved in dystonia, identifying an anatomical target for further study. The models provide information for neurologists and neurosurgeons to consider when planning surgery and making device programming decisions.
Researchers developed electrically conductive coat paint to identify problems early in critical infrastructure. The sensing skin can detect cracks and damage in nuclear facilities, bridges, and other structures.
Researchers at MIT have discovered a 'random solid solution' that affects how ions move through the material, explaining the unexpectedly high power and long cycle life of lithium-ion batteries. The study provides new insights into the dynamic processes within electrode materials.
Researchers at the University of Akron have developed a shatterproof screen technology using a transparent electrode that is tough, flexible and cost-effective. The new film can withstand repeated scotch tape peeling and bending tests, offering a potential replacement for traditional touchscreen displays.
Researchers at the University of Central Florida have developed a way to both transmit and store electricity in a single copper wire, using nanotechnology. This breakthrough could enable the use of energy-storing cables in applications such as electric vehicles, space-launch vehicles, and portable electronic devices.
Researchers at Vanderbilt University have developed new structural 'supercaps' that can store and discharge significant amounts of electricity while withstanding realistic static loads and dynamic forces. The device operates flawlessly in storing and releasing electrical charge, even under intense dynamic and static forces.
Researchers at Disney Research have created electrostatic loudspeakers that can be printed in any shape using 3D technology, enabling objects to produce sound and even ultrasound. The technology has potential applications in interactive systems, toys, and games.
A team at MIT has figured out a way to measure the fundamental charge transfer rate in porous battery electrodes, revealing significant surprises. The study found that the Butler-Volmer equation is inaccurate, especially at higher voltage levels, and that electron transfer between two solids determines the rate.
The study found that a distance of 5 mm between recording and stimulating electrodes, and a distance of 10 mm between recording and stimulating sites, was optimal for compound nerve action potential recording. Additionally, orthodromic compound action potentials were more stable and displayed less interference than antidromic ones.
PhD students Katarina Bengtsson and Sara Nilsson have developed a significant step toward miniaturized gel electrophoresis by replacing traditional platinum electrodes with conducting polymer materials. This advance allows for faster and more reliable medical diagnoses and DNA sequencing.
Scientists at Oak Ridge National Laboratory have developed a new microscopy method to image and measure electrochemical processes in batteries in real time. This technique allows them to capture an unprecedented view of the solid electrolyte interphase, a nanometer-scale film that forms on a battery's negative electrode.
Scientists at the University of Cambridge discovered that implant stiffness is a major cause of foreign body reactions. The team found that stiff materials trigger inflammation and cell shape changes in brain cells, leading to encapsulation with scar tissue.
Dennis Aabo Sorensen, a Danish amputee, regained his sense of touch with a revolutionary bionic hand. The prosthetic hand was surgically wired to nerves in his upper arm, allowing him to feel objects intuitively and identify textures.
Researchers exploited the Kondo effect in molecules to change conductance between electrodes. The phenomenon allows for an increase in electrical resistance at low temperatures but can be reversed at small size scales.
Researchers used neuroelectrophysiology to prove the objective existence of propagated sensation along the meridian. By stimulating specific acupoints, they observed a high potential reaction in corresponding brain areas, indicating the meridian's presence.
The Ruhr-University Bochum researchers developed a bio-based solar cell using photosystem 1 and 2 proteins, generating an efficient electron current. The bio-based solar cell boasts an efficiency of several nanowatts per square centimeter, making it a potential blueprint for semi-artificial and natural cell systems.
Researchers developed a stretchy polymer that coats the electrode, binds it together, and spontaneously heals tiny cracks during battery operation. This self-healing coating extends silicon electrodes' lifespan up to 10 times, making them suitable for electric vehicles and cell phones.
Researchers develop a silicon-based water splitter coated with an ultrathin layer of nickel, achieving stability for over 80 hours without corrosion. The innovative device uses light to split water into oxygen and hydrogen, offering a sustainable alternative for clean energy production.
A new super-thin silicon membrane developed at the University of Rochester enables the creation of miniaturized pumps that can be powered by small batteries, paving the way for portable diagnostic devices. This breakthrough could lead to applications in medical and electronic device cooling, as well as cost-effective fabrication methods.
A team of researchers has created a new type of supercapacitor that uses wood-biochar as the electrode surface, eliminating the need for expensive and corrosive chemicals. The new technology reduces material and environmental costs, making it a more sustainable alternative to traditional supercapacitors.
Researchers collect first solid evidence of brain activity pattern similarity between experimental conditions and everyday conversation. The study's novel method allows for real-life brain monitoring, potentially enabling applications like communication devices for patients with strokes.
Researchers developed a printable, cuttable multi-touch sensor with robust circuit layout for various shapes and applications. The new design combines star and tree topology for improved functionality and durability.
Researchers are developing a drug to prevent inflammation around implanted electrodes, which causes brain cells to degenerate and compromise the blood-brain barrier. Testing is underway to determine if administering the drug can improve outcomes and extend the lifespan of brain implants.
Researchers have created a transparent, elastic OLED that can be repeatedly stretched, folded and twisted at room temperature while still retaining its original shape. The new material has potential applications in smartphones, clothing, lighting, medical tools and more.
A research team at Northwestern University has designed and synthesized new polymer semiconductors, resulting in polymer solar cells with an impressive 80% fill factor. This achievement surpasses previous records and paves the way for a more efficient and sustainable energy production method.
A team of researchers at ETH Zurich used high-resolution microelectrode arrays to measure axonal signal speed, finding significant variations within the same neuron. The study challenges the long-held assumption that axonal signal conduction is purely digital.
Researchers at the University of Michigan have discovered a new type of stretchable conductor made from spherical nanoparticles embedded in elastic materials. The material exhibits exceptional stretchability and electrical conductivity, making it suitable for various applications such as brain implants and flexible electronics.
A study by Cedars-Sinai Medical Center's Movement Disorders Program identified variables that affect impedance in deep brain stimulation devices, which can alter patient outcomes. Regular clinic visits are crucial to ensure steady levels of stimulation and prevent side effects.
Researchers developed a combined approach of MicroCT-based visualization and microfluidic-based electrochemical analysis to correlate changes in electrode performance with catalyst layer structure. This allows for systematic investigation of electrode-based electrochemical processes and guides electrode optimization for improved cataly...
Researchers have discovered a champion nano-structured iron oxide structure that can produce solar hydrogen with high efficiency. The discovery, published in Nature Materials, aims to reduce the production cost of hydrogen from €15 per kilo to €5.
Researchers have created a sturdy, transparent, and indium-free electrode from silver (Ag) and titanium dioxide (TiO2) that could replace indium-based electrodes. The new electrode has a low sheet resistance and high optical transmittance, necessary for high-performance devices.
Neuroscientists have developed a carbon nanotube probe that captures individual brain-cell signals, improving upon metal and glass electrodes. The new probe allows for more precise recordings of electrical signals from single neurons, enabling better understanding of the computational complexity of the brain.
Researchers have demonstrated that brain-computer interfaces can learn as users practice simple motor skills like waving a hand. After just 10 minutes of practice, the brain's activity transitions from learning to automatic actions, indicating successful learning.
A new surgical technique for deep brain stimulation (DBS) has been developed, allowing for more accurate placement of brain electrodes and reducing complications. The procedure is safer and faster than traditional DBS surgery, making it a promising treatment option for various medical conditions beyond Parkinson's disease.
Researchers at Ulsan National Institute of Science and Technology have developed a hybrid transparent and stretchable electrode combining graphene and silver nanowires. The new material exhibits high electrical and optical performance, preserving mechanical flexibility and resistivity even when bent or folded.
Researchers at Purdue University have created a new type of transparent electrode that combines graphene and silver nanowires to overcome the drawbacks of traditional materials like indium tin oxide. The hybrid material has a low sheet resistance and remains flexible even when bent, making it suitable for applications such as solar cel...
Researchers have found a way to modify the optical transparency of single-walled carbon nanotube films in a controlled pattern by adding an ionic liquid, enabling applications such as Smart Windows and more efficient electronics.
Researchers have developed a method to precisely control the distance between electrodes and cells, allowing for accurate measurement of single-cell oxygen consumption. This enables quick analysis of cell activity and metabolic processes.
A new laser-powered terahertz source and detector system has been developed, offering 1,500 times more power and sensitivity than existing technologies. This enables deeper tissue imaging and sensing applications with improved efficiency.
The updated SEEG technique combines sophisticated imaging data reconstructions and robot-assisted surgery to provide essential information in complex cases of drug-resistant epilepsy. The new workflow reduces procedural error risks and improves accuracy in localizing the epileptogenic zone.
Researchers at Vanderbilt University have developed a new, nonsurgical process to fine-tune and customize cochlear implant programming, providing improved sound quality and spectral resolution. This image-guided strategy uses pre- and postoperative CT scans to pinpoint electrode locations and optimize signal transmission.
Scientists at UCSF have discovered a way to detect abnormal brain rhythms associated with Parkinson's disease by implanting electrodes within the brains of people with the disease. This finding may lead to developing next-generation brain stimulation devices to alleviate symptoms.
A novel fabrication technique called selective area atomic layer deposition (ALD) developed by Brian Willis could vastly improve the efficiency of solar rectenna arrays. Rectennas can harness more than 70% of the sun's electromagnetic radiation, converting it into usable electric power.