Articles tagged with Electrodes
A team of researchers developed a new technique using X-ray technology to map out damage in lithium-ion batteries. They created the most comprehensive view yet of battery electrodes, which are prone to degradation from repeated charging. The study could lead to more reliable and longer-lasting batteries for electric cars and smartphones.
Researchers at Peter the Great Saint-Petersburg Polytechnic University developed a new pair of reagents to obtain electrode materials based on nickel oxide. The study showed improved electrochemical characteristics, enabling longer operation without additional charge.
Researchers found that buildup of lithium oxide and decomposition of electrolyte lead to rapid capacity fade in magnetite-based electrode material. The conversion reaction is not fully reversible, causing residual products to accumulate and block electron transport.
Researchers discovered a novel noninvasive electrophysiological biomarker for Parkinson's disease using scalp electrodes and electroencephalography (EEG). The approach showed promise for developing wearable technology to monitor disease-related brain activity at home.
Researchers at Carnegie Mellon University aim to create a noninvasive neural interface that can sense and stimulate the brain's dynamic activity with unprecedented resolution. The team will harness novel concepts in physics, biology, and engineering using electricity, ultrasound, and light to develop a wearable device.
Researchers developed a new method to use rare and expensive catalysts sparingly by encasing precious metal salts in micelles. The process efficiently catalyzes oxygen reduction in fuel cells, outperforming traditional methods.
Researchers at NYU Tandon School of Engineering have discovered a method to make organic solar panels more robust by removing electron-accepting molecules from the top surface. This technique enhances the durability of organic solar cells, allowing them to function under water without encapsulation and resist degradation from oxygen an...
Researchers at Ruhr-University Bochum developed a method to increase bioelectrode stability by operating under an oxygen-free environment. This approach effectively extends the device's lifespan and brings photobiodevices closer to efficient energy conversion.
A wearable system developed at KAUST can detect glucose and lactate levels in sweat, providing insights into blood sugar problems and oxygen deficiencies. The device uses a stretchy patch with MXene-based electrodes that can be repeatedly swapped out for improved detection accuracy.
Researchers designed a novel fiber electrode to improve electron supply and ion accessibility, achieving high specific capacitance and rate capability. The amphiphilic core-sheath structure enhances interactions between functional groups and PANI molecules, resulting in greater pseudocapacitance utilization.
Researchers have made significant strides in improving the stability of perovskite solar cells to match their high efficiency. Surface terminal groups and alternative electrodes are promising strategies for enhancing long-term stability and reducing degradation mechanisms.
Researchers confirm effectiveness of transient coaxial helical injection (CHI) technique, which could facilitate constant fusion reactions and free up space in compact spherical tokamaks. The technique eliminates the need for a central magnet, simplifying design and potentially improving performance.
A new proximity capacitance imaging sensor has been developed with high sensitivity and resolution, detecting sweat pores between finger ridges. This advancement aims to improve security in various fields such as authentication and life sciences.
A new study reveals that hippocampal neurons provide pointers to complete memories by firing strongly during recall. This process, called reinstatement, helps the brain reconstruct associated objects from memory, similar to initial learning. The discovery has implications for understanding memory deficits and potential treatments.
Michigan State University has landed a $1.8 million National Institutes of Health R01 grant to develop new brain implants that decipher complex chemical and electrical input and output for treating Alzheimer's, Parkinson's, depression, and traumatic injuries.
Researchers at Lund University have achieved a more efficient transfer of electrical current from bacteria to electrodes, paving the way for potential use in biofuel cells and other energy applications. The discovery also sheds light on how bacteria communicate with their surroundings, including other molecules and each other.
A team of researchers, including University of Utah engineers, are working on a new procedure to restore hearing loss using an implantable device that sends electrical impulses to the auditory nerve. The device has shown promise in improving sound resolution and compatibility with existing hearing aids.
A research team at DGIST has successfully developed a high-performance color filter-free image sensor, which performs both electrode and color filter functions. The image sensor is thin enough to be applied to flexible wearable devices with a pixel thickness of less than 800nm.
Researchers at Washington State University captured heat-loving bacteria that can 'eat' pollution by converting toxic pollutants into less harmful substances and generating electricity. The discovery was made possible by a cheap portable potentiostat invented by graduate student Abdelrhman Mohamed, who worked with Professor Haluk Beyenal.
Researchers improve energy density of supercapacitors using a suitable electrolyte solvent, doubling the charge storage capacity of titanium carbide MXenes. The study reveals that specific solvents can significantly increase charging speed and boost energy storage.
Proteins exhibit surprising electrical conductivity when connected to electrodes via specific molecules, paving the way for sensitive chemical sensors. The study identifies six proteins capable of conductance, with two specific contacts resulting in highest conductivity.
Scientists successfully demonstrated that electroencephalography can be used to accurately study activity in the deep areas of the brain. This breakthrough technique may lead to better understanding and treatment of diseases such as Parkinson's, Tourette syndrome, and obsessive-compulsive disorders.
Researchers create experimental device to mimic realistic chest impacts, testing its effect on bioengineered heart tissue. Contrary to previous studies, they found that even very rapid strains had no effect on the propagation of electrical impulses.
Researchers create experimental device to subject bioengineered heart tissue to dynamic strain cycles and measure electrophysiological response. Contrary to previous studies, they found that rapid strains do not disrupt electrical impulses, suggesting alternative explanations for deadly blows to the chest.
A new method borrows from Goldilocks thinking for evaluating metal thickness, finding the ideal electrode thickness. This technique can increase catalyst activity by 10-50 times and use 90% less metal than current fuel cells.
Researchers are working on developing faster-charging batteries for electric vehicles by understanding how lithium ions distribute within the electrode. They used X-rays to create a micron-scale movie of lithium distribution, revealing inhomogeneous movement similar to people spreading out in a room.
A research team from the University of Science and Technology of China has developed a simple solution to fabricate large-area Ag-nylon flexible transparent windows for high-efficiency PM2.5 capture. The material shows excellent mechanical stability and can be used as both a thermochromic smart window and a high-efficiency PM2.5 filter.
Researchers create ultrasmall, untethered electrodes activated by near-infrared light for neural stimulation, reducing inflammation and scarring in neural tissue. The technology offers improved spatial precision and potential for deeper tissue access.
The study reveals that using a metallic substrate with higher chemical reactivity can significantly increase the phase transition yield of 2D-TMD materials. This method enables the easy achievement of structural phase transitions and opens possibilities for new device applications such as low contact resistance electrodes.
A Swedish patient has become the first recipient of an osseo-neuromuscular implant to control a dexterous hand prosthesis. The breakthrough technology enables patients to use implanted neuromuscular interfaces to control their prostheses while perceiving sensations in daily life.
Researchers at Harvard John A. Paulson School of Engineering and Applied Sciences have developed a method to change the shape of a flat sheet of elastomer using actuation that is fast, reversible, and controllable by an applied voltage.
Researchers have developed graphene quantum dot sensitized C-ZnO nanotaper photoanodes, which demonstrate superior photoconversion efficiency and incident-photon-to-current conversion efficiency. The resulting quantum dot sensitized solar cells exhibit improved photovoltaic performances compared to conventional ZnO-based photoanodes.
Researchers at the University of Kansas are working on a new lithium-oxygen battery technology that promises higher energy storage capacity and longer-lasting performance. The goal is to overcome current limitations, such as slow discharge rates, and develop practical applications for consumer electronics and electric vehicles.
A team of researchers has found that diffusion may not be necessary to transport ionic charges inside a hydrated solid-state structure of a battery electrode. This discovery could lead to new design principles for electrodes and potentially improve the energy density and cycle life of high-power batteries.
Researchers have developed a graphene-based sensor that can detect brain activity below 0.1 Hz, unlocking new insights into epilepsy and brain function. This technology could lead to novel multiplexing strategies, enabling unprecedented mapping of low-frequency neural signals.
Researchers developed nanosized LiFePO4 modified electrodes for biochemical analysis, detecting rutin and hemoglobin with high sensitivity. The electrodes achieved detection limits of 8.0 nmol L-1 for rutin and 0.068 mmol L-1 for trichloroacetic acid reduction.
Researchers found that frequency affects neural activation during electrical stimulation, contrary to previous assumptions. This discovery opens up new possibilities for activating different neural circuits with the same implant, which could lead to improved neuromodulation therapy.
A Johns Hopkins study found that the brain's push-pull dynamic between hemispheres contributes to risk-taking behavior, with cumulative feelings from past bets influencing decisions. Researchers used stereoelectroencephalography to analyze neural signals and developed a mathematical equation to calculate each patient's bias.
Researchers at Binghamton University have developed a new type of microelectromechanical system that uses electrostatic levitation to provide a more robust system, reducing damage to MEMS switches in cell phones and power lines.
Researchers at NYU Tandon School of Engineering have developed a physics-based model that reveals the relationship between structural defects in graphene and electrode sensitivity. By optimizing point defects in number and density, they can create an electrode up to 20 times more sensitive than conventional ones.
Researchers investigated the transition from tunneling leakage current to molecular tunneling in single-molecule junctions, finding optimal nanogap distances for proper function. The study suggests that future single-molecule electronics require precise control over molecular length and gap size.
Scientists have developed a method to monitor changes in membrane potential and observe ion fluxes by studying the behavior of water molecules surrounding neuronal membranes. This breakthrough could provide insight into neural activity, enabling scientists to track neurons without using electrodes or fluorophores.
Researchers at Far Eastern Federal University found that arc welding produces toxic nanoparticles in the air, which can be inhaled through the respiratory system. The particles contain metal oxidation products, particularly those with diameters under 1 nanometer, and can translocate to the central nervous system.
Researchers have developed a tiny device that electrically stimulates the brain, paving the way for minimally invasive treatments for conditions such as epilepsy and Parkinson's disease. The Stentrode can deliver targeted stimulation without open-brain surgery, opening up new possibilities for treating neurological disorders.
Researchers have identified a key brain region, the lateral orbitofrontal cortex (OFC), as an effective target for electrical stimulation to improve mood in people with depression. Stimulation of this area has been shown to produce acute improvement in mood and normalize activity in mood-related neural circuitry.
Researchers at Imperial College London have created a rapid prototyping method for intricate electrode patterns, allowing devices to sense and measure biological molecules more efficiently. This method enables community labs and hackspaces to design and develop analytical devices in days, not weeks or months.
MIT engineers have built and flown the first-ever plane with no moving parts, powered by an 'ionic wind' that generates enough thrust to propel the aircraft over a sustained flight. The lightweight aircraft is silent, doesn't depend on fossil fuels, and produces zero combustion emissions.
Researchers at Chalmers University of Technology have developed a new electrochemical process to clean mercury from water, reducing its content by over 99%. The technique uses a platinum electrode to form an alloy with mercury, creating a stable and recyclable material.
Researchers from Ruhr-University Bochum developed a system combining gas diffusion electrode technology with the enzyme hydrogenase to achieve significantly higher current densities. The resulting biofuel cell achieved a power density of up to 3.6 milliwatts per square centimeter and an open circuit voltage of 1.13 volts.
Researchers at Ruhr-University Bochum developed a new fabrication process for transparent ultra-thin silver films, which may improve the efficiency of solar cells and light-emitting diodes. The process overcomes challenges associated with traditional chemical methods.
Researchers at MIT have developed a new system to extend the shelf life of single-use metal-air batteries by introducing an oil barrier that protects the aluminum electrode from corrosion. The design has shown a thousandfold improvement in energy loss, enabling batteries to last up to 24 days without degradation.
Researchers have developed a 3D 'organ on a chip' that enables real-time continuous monitoring of cells, which could lead to the development of new treatments for diseases. The device allows scientists to study cells and tissues in new ways, mimicking the body's native three-dimensional environments.
The EPFL-developed nerve-on-a-chip platform enables rapid recording of hundreds of nerve responses with a high signal-to-noise ratio. The platform can also record individual nerve cell activity, enabling the development of more effective neuroprosthetics for treating chronic pain and regenerating peripheral nerves.
Scientists at UC Santa Cruz and LLNL fabricated electrodes using printable graphene aerogel to build a porous three-dimensional scaffold loaded with pseudocapacitive material. The novel electrodes achieved the highest areal capacitance, while maintaining performance without sacrificing energy storage capacity per unit mass or volume.
Researchers have created a see-through microfluidic device that minimizes biological sample destruction and allows for clear observation of inner workings. Thin hafnium oxide layers enable biocompatibility and transparency, reducing unwanted side effects like cell lysis.
A Kanazawa University-based collaboration developed a microscopy approach to visualize real-space charge distribution at interfaces. The technique, called 3D open-loop electric potential microscopy (OL-EPM), overcomes challenges in measuring lateral charge distribution at solid-liquid interfaces.
A KAIST research team has reported a stretchable pressure insensitive strain sensor by using an all solution-based process. The new electronic skin can distinguish mechanical stimuli analogous to human skin and can be uniformly coated on 3-dimensional surfaces.
Researchers at Lund University discovered that intestinal bacteria like Enterococcus faecalis can generate an electric current from breaking down sugar inside their cells. This finding has implications for bioenergy production, waste treatment, and biosensors.
A UC Berkeley study reveals the brain's orbitofrontal cortex replays and revisits nearly every feature of previous decisions after placing a bet. The researchers found that gamblers' regret from losing or not betting more is the main driver of activity in this region.
Researchers at the University of British Columbia have developed a plasma treatment method that modifies electrode surfaces to facilitate efficient water transport in fuel cells. This innovation enables fuel cells to operate effectively without excessive moisture, improving overall performance and energy conversion rates.