Articles tagged with Voltage
Vanderbilt University researchers find that damped propagating waves, not fully extinguished by low voltage defibrillation shocks, could lead to cardiac arrhythmia. These waves, difficult to detect and study, may be a cause of defibrillation failure.
A recent study found that increasing brushing time and pressure beyond a certain point does not improve plaque removal, but may increase the risk of oral health issues. The researchers emphasize the importance of proper technique and accurate pressure application to avoid harm.
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 at Rockefeller University have discovered the molecular mechanism by which potassium ions flow through living cells during a nerve or muscle impulse. The structure reveals four red-tipped paddles that open and close in response to positive and negative charges.
Researchers have discovered the structure of voltage-dependent ion channels, crucial for nerve function and muscle contraction. The study reveals a novel mechanism that enables ions to flow through these channels, allowing for precise regulation of electrical impulses in the brain and heart.
Rocco Schiavilla, Interim Theory Group Leader at Jefferson Lab, was elected APS Fellow in 2002 for his work on nuclei as systems of protons and neutrons interacting via many-body potentials. His research focuses on the development and application of this picture to explain nuclear properties over a wide range of energies.
Jacek Sekutowicz, a visiting senior scientist at Jefferson Lab, is leading the way in cavity redesign as part of a proposed 12 GeV upgrade. He and his colleagues aim to reduce or eliminate parasitic modes using high order mode couplers, resulting in highly efficient beam passage through the cavities.
Researchers at Jefferson Lab are conducting an experiment to demonstrate energy recovery, which could lead to more efficient and powerful accelerators. By recirculating high-energy electrons, they aim to reduce RF energy usage while maintaining beam quality.
Researchers at Georgia Institute of Technology have developed optoelectronic devices based on silver nanoclusters that can perform addition and other complex logic operations. The devices use electroluminescence to produce optical output, allowing for read-out without electrical contacts.
A new class of composites has been developed that can store electric charge more efficiently, enabling the creation of artificial muscles and tendons with improved motion. The material also has potential applications in microfluidic systems for drug delivery and smart skins for drag reduction.
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 Cornell University and Harvard University develop transistors using single cobalt and di-vanadium molecules, controlling electron flow and demonstrating nanoscale electronics potential. The advancements pave the way for building smallest possible electronic components.
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.
Scientists at the Netherlands Organization for Scientific Research created a more stable silicon layer than traditional amorphous silicon, allowing for faster production. This breakthrough reduces production costs of flat-panel displays and solar cells, potentially benefiting manufacturers and the semiconductor industry.
Modern wind turbines equipped with power electronics converters can boost voltage and stabilize mains voltage, even in the absence of wind. The technology uses reactive power compensation to adjust voltage without significant energy loss.
Researchers at the University of Buffalo have discovered that cells 'wiggle' at high speeds when exposed to voltage changes, without relying on special proteins or lipids. This fundamental property of cells opens up new avenues for studying cell motility and its potential applications in medicine.
Paul McEuen's research group has developed a method to count individual electrons in carbon nanotubes using an atomic force microscope. This breakthrough enables scientists to study the basic physics of electron behavior and advance the field of nanoelectronics.
Researchers have created a nanotube single electron transistor that operates efficiently at room temperature. The device is smaller than 1/500th the distance across a human hair and only requires one electron to toggle between on and off states, making it an ideal candidate for molecular computers.
Researchers at MIT have developed a new alternator design that significantly increases electrical power in future cars while also improving fuel efficiency. The technology, which uses active switches to control current flow, solves several technical problems associated with higher-voltage systems.
Researchers at the University of Rochester have created a model called Complexity-Adaptive Processing (CAP) that monitors and adapts software's use of microprocessor hardware. Early tests show CAP can halve energy consumption while improving performance, paving the way for more efficient processors.
Researchers have created a device that converts electric signals into optical transmissions at 100 gigabytes per second, eliminating download time and increasing efficiency. The breakthrough technology has the potential to transform fiber optic telecommunications and enable applications such as aircraft navigation and smart cars.
Researchers at the University of Illinois have discovered a rotational motion in gates controlling nerve impulses, challenging current models. The study reveals how amino acids move like keys turning in locks, affecting the flow of ions and generating nerve impulses.
Scientists have detected rotational motion in ion channel gates, which control the flow of sodium and potassium ions. The discovery challenges current models and may aid in developing future treatments for neurological disorders.
Researchers at Rice University have created a reversible molecular computer switch, which can represent ones and zeros in digital computing. The switch is made of molecules that are one million times smaller than traditional silicon-based transistors, promising continued minitaturization and increased computing power.
Cornell University scientists demonstrate a concept that could be used in ultra-small electronic devices by isolating a single oxygen molecule and causing it to rotate on command. The experiment provided basic research information about the nature of the chemical bond formed when an oxygen molecule is adsorbed to a platinum surface.
Researchers at Georgia Tech developed a new type of microrelay that can switch large current loads at five volts, setting records for contact resistance and current handling capability. The devices offer cost advantages due to batch production and standard microelectronics processing.
The world's first Dynamic Voltage Restorer (DVR) has entered commercial service on Duke Power's system, correcting a severe voltage sag at Orian Rugs in South Carolina. The DVR uses advanced power electronics to rapidly inject energy onto the line and restore 100% voltage within 30 cycles.