Articles tagged with Electrodes
A novel neuro-prosthesis has restored brain-controlled reaching and grasping in a person with complete paralysis, enabling them to feed themselves and drink. The technology decodes brain signals and transmits them to sensors in the arm, allowing users to regain movement and independence.
Swedish researchers used nanoelectrochemical measurements to study zinc's influence on neurotransmitter release. They found that zinc reduces the number of stored neurotransmitters but maintains the amount released upon stimulation.
Scientists at Ecole Polytechnique Fédérale de Lausanne are developing intelligent neuroprosthetics that can decode brain signals and stimulate spinal cord muscles to facilitate walking movements. Clinical trials are currently underway to test the feasibility of these devices on patients with partial paralysis.
Researchers successfully demonstrated a reliable and reproducible single molecule switch, enabling electric current to flow between electrodes through the molecule or not. The breakthrough could lead to advancements in molecular electronics.
Researchers have developed a family of resistive random access memories using multilayer hexagonal boron nitride as dielectric, showing promising retention times and low cycle-to-cycle variability. The devices exhibit coexistence of forming free bipolar and threshold-type resistive switching.
The new device, an array of tiny carbon electrodes, measures dopamine levels at millisecond timescales and can be used to monitor therapies aimed at boosting dopamine levels. The researchers found that dopamine levels vary greatly across the striatum, with implications for understanding learning and brain disorders.
A small study suggests deep brain stimulation is safe for patients with chronic anorexia and may help improve mood, anxiety, and wellbeing while increasing weight. The treatment altered brain circuits that drive anorexia symptoms, leading to improved mental health and quality of life.
Researchers at San Diego State University have developed glassy carbon electrodes that transmit more robust signals to restore motion in people with damaged spinal cords. This innovation improves durability and signal quality, enabling better motor function restoration.
Engineers at the University of Texas at Austin created ultra-flexible brain probes that achieve more reliable long-term neural recording without causing scar formation. The probes' mechanical compliances mimic brain tissue and enable reliable recording of individual neurons for extended periods.
Researchers identified a neural pathway in humans that explains how the brain processes feelings of fear and anxiety. By analyzing neuronal activity while watching horror movie scenes, they found that the amygdala and hippocampus directly exchange signals to process fearful stimuli.
A team at MIT has probed the mechanical properties of a sulfide-based solid electrolyte material, determining its potential for use in all-solid-state batteries. The research found that the material exhibits a combination of properties similar to silly putty or salt water taffy, showing promise in energy density and safety.
Researchers developed a wearable sensor to monitor skin hydration in real-time, tracking health risks and improving safety for military personnel, athletes, and older adults. The low-cost sensor uses conductive silver nanowires to detect changes in skin electric properties based on hydration levels.
Researchers from Lomonosov Moscow State University have found that electrochemical oxygen reduction in lithium-air batteries is plagued by side reactions, limiting recharge cycles. The team identified defect sites in carbon electrodes as a key factor in the reaction's progression.
Physicist Igor Kaganovich and collaborators discovered the physics driving plasma etching, a technique powering electronic devices. The research found that electrically charged gas plasma enhances etching efficiency by creating strong plasma waves.
Researchers have developed a flexible transistor that can be stretched to twice its length without significant changes in conductivity. The breakthrough uses a semiconducting polymer confined within an elastic matrix, demonstrating effective transconductivity even under heavy stretching.
A team of researchers has fabricated copper-based nanostructures with high specific and areal capacitances in a short time frame, making them suitable for energy devices such as supercapacitors and lithium-ion batteries. The study's findings suggest that these structures have great potential for energy applications.
Researchers at Michigan Tech created a new way to synthesize sodium-embedded carbon nanowalls, which have two orders of magnitude higher conductivity than three-dimensional graphene. The material also retains high capacity after 5,000 charge/discharge cycles, making it ideal for supercapacitors and energy devices.
Researchers at UC Berkeley observed the brain's re-tuning process when listening to previously unintelligible speech after priming. The study confirms speculation that neurons in the auditory cortex continually tune themselves to pull meaning out of a noisy environment, enabling individuals to quickly comprehend garbled speech.
A new study has developed an electrical immunosensor that can detect heart attacks within a minute using human serum. The system works by measuring the level of cardiac troponin I, a protein excreted by the heart muscle after a heart attack. This novel immunosensor holds considerable potential for use in biomedical diagnosis.
Researchers at Massachusetts General Hospital have developed a significant improvement in brain implant technology, allowing for selective activation of targeted neurons. Microcoil implants generate magnetic fields that extend in specific directions, reducing the risk of activation of passing nerve fibers.
Scientists at NIFS successfully measure flow reversal of negative ions, revealing U-turn trajectory and beam extraction point. The study's findings improve performance of negative ion sources, essential for future fusion devices.
Case Western Reserve University researchers are scaling up a prototype iron-flow battery to provide cleaner and cheaper power when renewable energy sources are ebbing or demand is peaking. The battery can store excess electricity and increase overall efficiency.
Researchers at Stanford University have developed a new technique to fine-tune metal catalysts at the atomic scale, leading to a significant boost in performance for platinum catalysts used in fuel cells. By compressing or separating atoms by just 0.01 nanometers, they found that platinum's catalytic activity nearly doubled.
Researchers developed bio-signal measuring electrodes that can be mounted on IoT devices, allowing for easy health diagnosis without additional equipment. The electrodes can measure brain waves, electrocardiograms, and other biological signals, and are expected to be applicable to medical fields.
Researchers at NIST have developed a way to build safe, nontoxic gold wires onto flexible plastic film, potentially enabling wearable health monitors. The discovery uses porous membranes with tiny holes, which keep the gold from cracking and improving conductivity.
Scientists at Oregon State University have successfully controlled electrical pulses in peripheral nerve fibers, offering new hope for paralysis patients. The technology could enable wearable control boxes that deliver impulses to implanted electrodes, allowing users to move their arms and legs.
Researchers at Ruhr-University Bochum and Malmö University created a hybrid fuel cell and capacitor using biocatalytic processes, generating and storing energy efficiently. The new biosupercapacitor combines energy production and storage, offering high capacity and low weight for potential use in implantable devices.
Sodium-oxygen batteries have shown improved cycle life and rechargeability thanks to a highly concentrated electrolyte solution. The new approach stabilizes DMSO in the presence of sodium, resulting in a passivating protective layer that enhances battery performance.
Researchers have created a novel method for making do-it-yourself, scrap-metal batteries that can store excess energy from residential solar panels. The new devices utilize steel and brass scraps, which are abundant and inexpensive, to achieve an energy density comparable to traditional lead-acid batteries.
Researchers developed a technology to track water movement in concrete using small electrical currents, allowing for accurate monitoring of water flow and potential issues. This method is faster, safer, and less expensive than existing technologies.
A new study explores the neural decoding of touch intensity in amputee patients, revealing that activation charge rate controls perceived sensation magnitude. This finding could lead to improved artificial touch in next-generation neuroprosthetics.
A research team at Toyohashi University of Technology has developed the world's smallest extracellular needle-electrodes, measuring 5μm in diameter. These tiny devices can record and analyze the electrical activities of microscale neuronal circuits in the brain, offering new experimental neurophysiological concepts.
Researchers have created a new type of switch that can instantly connect and disconnect electrical flow, reducing power waste by up to 50% in devices like smartphones and laptops. This technology has the potential to significantly improve energy efficiency and prolong battery life.
Scientists have developed thin, flexible lithium ion batteries that can self-heal after breaking, overcoming common wearables' power source limitations. The new batteries feature a self-healing polymer and gel electrolyte, allowing for safe use on the body.
Kansas State University researchers have developed a novel device using gold nanowires to manipulate individual cells in medical procedures. The gold nanowires are 1,000 times smaller than a human hair and can pierce biological cells to stimulate the cell membrane and investigate its interior.
Researchers from University of Wisconsin-Madison have revealed a fabrication process for revolutionary transparent sensors, which can be used for brain imaging, electrophysiology, fluorescent microscopy, optical coherence tomography, and optogenetics. The technology has the potential to expand its applications into areas such as stroke...
Researchers at University of Cambridge identify a competing pathway that diverts electrons away from the electrode, reducing efficiency and potentially damaging the system. The study offers insights into how to address this issue and enhance the performance of artificial photosynthetic devices.
The sensing skin detects cracks and harmful chemicals in structures using three layers: one for crack detection, a buffer layer, and another with metal nanoparticles that respond to specific chemicals. The technology can be applied to various materials and can detect problems early on.
Researchers developed a transparent metal electrode with improved efficiency, using fractal-like nano-features inspired by leaf veins. The new design combines low surface coverage and ultra-low resistance, surpassing conventional indium tin oxide layers.
Researchers at IBS developed a two-terminal tunnelling random access memory (TRAM) with highly reliable performance, long retention time, and flexibility. The device stores data by keeping electrons on its graphene layer, enabling flexible and stretchable applications for wearable smartphones, eye cameras, and biomedical devices.
Researchers have developed a noninvasive method to measure cortical spreading depression, a brainwave linked to migraines and epilepsy, using scalp electrodes and specialized amplifier. This breakthrough could lead to better diagnosis and treatment of these conditions.
Researchers at the University of Waterloo have developed a long-lasting zinc-ion battery that costs half the price of current lithium-ion batteries and provides high reversibility, rate, and capacity. The battery uses safe materials and a pH-neutral electrolyte, making it ideal for grid energy storage and renewable energy production.
Researchers developed stretchable micro-supercapacitors using graphene ribbons to store energy in wearable devices. The design allows for stretching without compromising electrochemical performance, enabling applications in smart T-shirts and soft robots.
Researchers at ETH Zurich have developed solid-state batteries that are non-flammable and can be heated to high temperatures. This breakthrough enables faster charging and larger energy capacity, making them suitable for battery storage power plants and portable electronic devices.
A research team has developed a method to 'freeze' newly created microbubbles in their tracks, enabling potential applications in medicine, such as ultrasound contrast agents and gas embolotherapy. This breakthrough could also improve the nuclear industry by controlling microbubbles in liquid sodium coolant.
Researchers at University of Wisconsin-Madison have created high-performance, micro-scale solar cells that outshine comparable devices in key performance measures. The new, small cells capture current from charges moving side-to-side and generate significantly more energy than other sideways solar systems.
Researchers at Michigan State University have developed bioelectrodes that can generate electricity by harnessing the power of Geobacter bacteria. The biofilms are composed of cells loaded with cytochromes and pili, which work together to transmit electrons across the biofilm and to the underlying electrode.
Researchers at Harvard John A. Paulson School of Engineering and Applied Sciences have developed a dielectric elastomer with broad motion range that requires relatively low voltage and no rigid components. This innovation addresses key challenges in soft actuation and opens doors for various applications in soft robotics.
Researchers used direct neural recordings and brain stimulation to study visual word form area's role in reading. They found that this area codes knowledge about learned visual words, enabling accurate discrimination of similar words.
Dr. Rodney S. Ruoff has been recognized with the SGL Carbon Award for his pioneering discoveries in carbon science, including the understanding of nanostructures and 2D materials. His work has greatly accelerated industrial developments in graphene-based materials and electrical energy storage systems.
A new skin electrode can measure muscle and nerve cell activity for hours without irritating the skin. This technology has potential applications in mapping emotions, improving rehabilitation outcomes, and monitoring driver alertness.
Researchers at Stanford University have developed a new method for producing clean hydrogen using photovoltaic water splitting, which can be used to power cars and store excess energy in the grid. The team also designed a novel rechargeable zinc battery with improved stability, enabling grid-scale energy storage.
Researchers have found that the human amygdala can detect threats in the visual environment at extremely fast time scales, even before receiving precise visual input from the neocortex. This discovery has implications for our understanding of pathologies such as phobias and anxiety, where the amygdala plays a key role.
Researchers at VTT have created a hybrid nanomaterial-based supercapacitor that can store and generate electrical energy on a silicon chip, paving the way for zero-power autonomous devices in IoT. The new technology has impressive power generation of 2 watts on a one square centimetre silicon chip.
Engineers at UC San Diego created a tricorder-like device that tracks lactate levels and heart signals in real-time, offering potential benefits for athletes and individuals with cardiovascular disease. The patch can be worn on the chest and communicates wirelessly with a smartphone or laptop.
Researchers have developed a soft actuator that allows robots to move freely without harming humans. The actuator uses hyperelastic membranes and electric fields to control movement, enabling robots to give way in case of doubt, making them suitable for applications where human safety is a concern.
Indian researchers have conducted analyses to electrically increase liquid flow in pump-free microfluidic devices. By implementing an electric field component, they can enhance on-the-fly controllability of the flow rate, aiding studies on targeted drug delivery and biophysical fluid transport.
A University at Buffalo study found that a smartphone app for monitoring heart palpitations provides comparable performance to traditional 14-day event monitors. The AliveCor app was found to be significantly easier to use and more acceptable to patients, with 94% compliance rate compared to 58% for the event monitor.
The new ion soft-landing technique resulted in electrodes that could store a third more energy and had twice the lifespan compared to conventional methods. The team also found that the POM hybrid electrodes used the active material extremely efficiently, with the lowest amount of POM required to reach their highest capacity.
Researchers at University of California, Irvine have invented a nanowire-based battery material that can be recharged hundreds of thousands of times without cracking. The breakthrough work uses a gold nanowire coated in a manganese dioxide shell and encased in an electrolyte made of a gel-like substance.