Articles tagged with Electrodes
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Scientists at Northwestern University have created a novel carbon nanotube-based nanoelectromechanical switch that exhibits bistability based on current tunneling. The device has the potential to revolutionize memory chips and electronic sensing devices.
Johns Hopkins researchers create a technique to release biomolecules and nanoparticles from a tiny gold launch pad using an electric pulse, enabling controlled release of medication or materials.
Physicists at NIST have developed a novel electromagnetic trap for ions that could be mass produced to build large-scale quantum computers. The new trap, described in Physical Review Letters, uses a 'chip-like' geometry to confine ions and has shown promise in trapping multiple ions without generating excessive heat.
Researchers at the University of Montreal have developed a high-performance OLED on a new electrode material, enabling flexible displays. The technology uses carbon nanotube sheets, which exhibit flexibility, transparency, and conductivity, making them suitable for various display and lighting applications.
The University of Utah is working on a bionic arm that can move naturally in response to thoughts and allow users to feel sensations, with the goal of restoring the capability of amputees. Researchers will develop a peripheral nerve interface device that relays signals from nerves to the artificial limb.
Researchers at PNNL have linked small organic molecules to create larger molecules that transport charge without interfering with blue light emission, enabling efficient white light generation.
Researchers developed a novel capacitor design to measure breakdown voltage in air at the micrometer scale, providing insights into electrical behavior. The device enables accurate measurements of arc formation and can be used to optimize microelectro-mechanical systems (MEMS) and larger electrical systems for automobiles.
A study at Oregon Health & Science University found that stroke patients who received electrical stimulation therapy showed significant improvement in hand mobility and strength compared to those receiving rehabilitation alone. The therapy, which induces neural plasticity, helps patients regain lost functions.
Researchers at Penn State have developed titania nanotube dye sensitive solar cells with a 3% initial conversion rate, which they aim to increase to 15% through optimization. The cells use an easier fabrication system than conventional silicon solar cells and have shown promise in producing more electrons that do not recombine.
Researchers developed a technique to record brain activity using BOLD signal while applying electrical microstimulation to the primate brain. The study found that activity patterns are larger than expected, reflecting functional spread via horizontal connections.
Physicists propose a nanoscale magnetic probe to study entanglement at a quantum critical point, potentially leading to breakthroughs in high-temperature superconductivity. The probe could provide controlled and tunable settings for studying quantum effects, including spin waves and electron tunneling.
Researchers at Arizona State University have developed a technology that can directly identify single nucleotide polymorphisms (SNPs) in DNA molecules using electrical conductivity. The technique involves measuring the electrical conductance of a single DNA molecule, which can reveal sequence information and detect mutations.
A new guidance system automates electrode placement in DBS surgery, reducing operating times by up to 80% and improving patient outcomes. The system uses a 3D brain atlas to predict target locations, allowing neurosurgeons to hit the mark on their first try.
The team's creation is the smallest robot that transduces force, is untethered, and engages in its own locomotion. It features two independent microactuators for forward motion and turning, powered by a grid of electrodes.
Molecular machines can now be driven individually using an electric current, allowing for controlled operation. This breakthrough enables the use of molecular machines in applications such as computing, sensors and bioengineering.
A study examining reasons for suboptimal outcomes following deep brain stimulation surgery found issues with screening, diagnosis, and device programming. The researchers successfully salvaged 51% of failed procedures through reprogramming, medication adjustments, and electrode replacement.
A new study published in the American College of Radiology shows that expandable electrodes are safe and effective for radiofrequency ablation of liver tumors. The procedure resulted in high survival rates and low complication rates, comparable to those achieved through surgery.
A new 'bionic eye' system aims to restore some degree of sight for people with degenerative retinal diseases like retinitis pigmentosa. The system, developed by ophthalmologists and physicists, uses a tiny camera and computer processor to directly stimulate the inner retina with visual signals.
Researchers at UW-Madison develop a system using living microbes as templates for fabricating nanoscale structures. The ability to capture and analyze individual microbes could lead to new ways of assembling nanodevices and detecting biological threats.
UC Berkeley researchers developed a mathematical model of the brain's electrical activity during seizures, which may aid in understanding and treating epilepsy. The model, compared with real-world data from electrodes implanted in a patient, suggests that strong coherent waves of electrical activity are responsible for seizure spread.
Scientists have achieved negative differential resistance in a single molecule attached to electrodes, a breakthrough that could lead to the development of molecular devices. The discovery was made possible by using an electrolyte solution and applying an insulating coating to minimize electrical contact with the surrounding environment.
Untrained individuals can use automated external defibrillators quickly and safely after basic theoretical explanation. The performance improves dramatically after training, reducing response times from over a minute to under 1 minute.
Researchers at the University of Utah are developing a wireless version of the Utah Electrode Array, which will enable people with paralysis to control devices with their minds. The project aims to implant the device in the brains of blind individuals and paraplegics, allowing them to see, stand, and walk again.
Researchers found that brain surface stimulation significantly reduced Parkinson's symptoms in animals, restoring normal activity in the striatum and motor cortex. The study suggests that this method could be an effective alternative to deep-brain stimulation with major advantages in simplicity and safety.
Researchers at UC Berkeley have created a device that allows brain cells to respond to light, enabling the potential treatment of retinitis pigmentosa and age-related macular degeneration. The breakthrough involves genetically engineering nerve cells to be sensitive to light using ion channels made light-sensitive.
Researchers developed a novel ion-beam system that neutralizes positive ions using plasma, enabling precise material shaping. The combined beam allows for multiple species of ions to be accelerated and used in various applications, such as producing sound suppressors for jet engines.
A Ph.D. student at Virginia Tech is using electrical resistivity to measure changes in underground water movement in sinkholes. He measured a rapid change in water movement under a sinkhole during Hurricane Ivan's downpour, finding preferential flow paths and potential contaminants.
Researchers create new methods to record brain activity, including collecting signals from hundreds of thousands of brain cells and using electrodes that don't penetrate the brain. These advancements bring the field closer to prosthetic devices controlled by thought, improving performance and reducing risks.
Recent studies have shed new light on how to decode nerve cell signals, simplifying the development of thought-controlled prosthetic devices. By analyzing activity in large populations of nerve cells, researchers hope to create more accurate brain-machine interfaces that can restore movement in paralyzed individuals.
Researchers tested electrical stimulation's influence on stroke recovery, showing participants experienced meaningful motor recovery gains. The study aims to validate these findings and potentially reverse paralysis, restoring patients' function and normal lifestyle.
The artificial retina project aims to restore vision in blind individuals by capturing visual signals and transmitting them to the brain. The device is a miniature disc with an electrode array that stimulates optical nerves, enabling users to see large letters and differentiate between objects.
Researchers identified a brain region that processes sound location and motion, with impaired function leading to 'cortical motion deafness'. The study provides evidence of an auditory motion module within the right posterior superior temporal gyrus.
Researchers at Duke University Medical Center have demonstrated the feasibility of brain-machine interfaces (BMIs) in humans, using arrays of electrodes to record brain signals and control external devices. The study showed that patients with Parkinson's disease and tremor disorders could use BMIs to play a hand-controlled video game.
Neuromuscular electrical stimulation significantly improves tissue health and enhances the wellbeing and independence of veterans with spinal cord injuries. Additionally, orthoses selection can improve clinical outcomes following cervical injury, while a home exercise program can improve upper-body endurance in wheelchair users.
The discovery allows researchers to move droplets across a chip's surface without touching solid walls, enabling experiments with mixed droplets and materials synthesis. This technology has wide-ranging implications for microscale transport, mixing, and chemical analysis.
Researchers at Duke University Medical Center have enabled rhesus monkeys to control a robot arm using only brain signals and visual feedback. The technology could lead to neuroprosthetic limbs for paralyzed people, and improve rehabilitation of those with brain and spinal cord damage.
Researchers at Arizona State University have developed a method to measure the electrical resistance of individual molecules, overcoming previous limitations. This breakthrough could lead to the creation of faster and more efficient electronic devices.
Researchers create device that measures forces as small as tens of nanonewtons and ties those measurements to larger forces based on the kilogram. The instrument achieves accuracy to a few parts in 10,000 and aims to extend its resolution to piconewtons.
Researchers discovered that blinking behavior in single-molecule wires is caused by temporary breaks in chemical bonds between the molecule and gold contacts. The study highlights limitations of the current gold surface material for electronic circuits.
Researchers studied 987 patients and found that those with multiple potential causes of syncope died earlier than those with a single cause. The study identified predictors such as older age, atrial fibrillation, and cardiac medication use.
Hebrew University scientists have created a new type of enzyme electrode that uses gold nanoparticles to detect glucose in the blood. This technology offers more sensitive and specific measurements than existing techniques, with potential applications for diabetes treatment and implantable biofuel cells.
Researchers have developed a technology that uses gold nanoparticles to attach enzymes to electrodes, improving the measurement of biological molecules. The technique enables more sensitive and specific glucose monitoring in diabetic patients, with higher flow rates detected than with traditional methods.
Researchers investigate various aspects of exercise and recreation for individuals with mobility impairments, including the effectiveness of vacuum-assisted prosthetic sockets, the importance of walking speed after stroke, and the development of rehabilitation technologies. These studies aim to improve the lives of people with spinal c...
The US Department of Energy is supporting a project to develop an artificial retina that can capture visual signals and send them to the brain, restoring vision to patients with age-related macular degeneration or retinitis pigmentosa. The next-generation device aims to have 1,000 electrodes, allowing users to see images.
Researchers have found that high-frequency stimulation of the brain can alleviate obsessive-compulsive disorder (OCD) symptoms in patients with Parkinson's disease. Two patients who underwent electrode implantation showed significant improvement in compulsive behaviors, suggesting a potential therapeutic approach for severe OCD.
Researchers aim to create partial vision for the blind using 1,000 MEMs electrodes attached to the retina. The system, backed by a $9 million grant, promises to enable basic household chores and reading, but not driving.
Scientists at Penn State have developed a voltage-controlled, two-color bipolar LEC that can produce yellow and red light, paving the way for efficient and stable full-color displays. The technology has high luminance intensity, efficiency, fast response time, and long-term stability, making it suitable for flat-panel applications.
Researchers at Duke University's Center for Neuroengineering will develop brain-controlled prosthetic limbs and apply brain-mapping technologies to aid surgeons in distinguishing healthy tissue from tumors. The center aims to increase resolution in mapping brain regions and enable control of complex robotic actions.
Researchers have designed rough-surfaced, fuzzy polymers to mesh with neurons, improving contact with brain tissue. The polymers' unique surface can fine-tune electrical signal conduction, enabling more efficient neural communication for brain-computer interfaces.
Researchers at Cornell University have created a single-atom transistor by implanting a molecule between two gold electrodes. The device demonstrates the potential for shrinking electronic components to smaller sizes and may be used as a chemical sensor.
Researchers at Brookhaven National Laboratory have developed a new method for producing electrodes, allowing for the creation of novel alloy compositions and improving electrochemical reaction rates. The method uses hydrogen to form nanocomposite materials, making it more effective and practical than traditional methods.
A new low-voltage microelectromechanical systems (MEMS) switch has been developed for integration with existing technologies in high-speed electronics. The switch boasts a tiny metal pad that can move up or down in under 25 microseconds, providing a very low insertion loss of less than 0.1 dB.
Researchers at UC Berkeley have developed a technology for creating cheap plastic solar cells that can be painted onto any surface, enabling applications such as powering wearables or small devices. The efficiency of the solar cells is currently low, but the team believes it has the potential to improve with further development.
Researchers successfully controlled a cursor using only brain signals from six neurons, enabling real-time and complex goal-directed behavior. This technology may one day restore interaction with the environment for paralyzed individuals.
Researchers at the University of North Carolina at Chapel Hill have discovered that carbon nanotubes can store more energy than conventional graphite electrodes, potentially leading to longer-lasting batteries. The study found that carbon nanotubes can contain roughly twice the energy density of graphite.
Researchers from Bell Labs have created molecular-scale organic transistors that can rival silicon transistors in performance. The breakthrough could lead to thousands of times more transistors being squeezed into the same space as today's circuits.
Scientists at Max-Planck-Gesellschaft developed a simple electrochemical procedure to fabricate three-dimensional microstructures. The innovation lies in applying ultrashort voltage pulses between the electrodes, which confines the electrochemical reaction to a small region and enables precise micromachining.
Researchers at UMass have made a major step forward in nanoscopic pattern transfer, creating precise designs on polymer films without the use of chemicals. The breakthrough has implications for producing smaller integrated circuits, magnetic storage, and on-chip sensors.
Researchers from the University of Delaware have developed a cheap and disposable biosensor using gold-on-plastic technology, which can detect targeted molecules in bodily fluids with high accuracy. The device is more specific than existing methods, such as latex agglutination tests, and can be produced at a lower cost.
Researchers at Case Western Reserve University are developing a new neural prosthesis technology that uses microstimulation to directly stimulate the spinal cord. This approach aims to improve the health and independence of individuals with quadriplegia and paraplegia, who currently lack control over vital functions.