Articles tagged with Electric Current
Researchers at MIT developed a new algorithm that can dramatically reduce the number of operations needed to solve the max-flow problem, making it possible to tackle even huge networks. The algorithm divides each graph into clusters of well-connected nodes and focuses on bottlenecks, allowing for efficient routing.
Researchers at Penn State have developed a near broken-gap tunnel field effect transistor (TFET) that uses quantum mechanical tunneling to provide high current at low voltage. This breakthrough device has the potential to replace current CMOS transistors in energy-constrained applications.
Researchers compared optogenetics and electrical stimulation in nonhuman primates, finding that both techniques increased accuracy in visual decision-making. Optogenetics showed advantages in precision and simultaneous recording of neural activity.
A novel rehabilitation device converts thoughts into electrical impulses to improve motor function in stroke patients, enabling them to perform activities of daily living. The device showed promising results in improving motor skills and quality of life for patients with moderate severity strokes.
University of Illinois researchers have developed a way to heal gaps in wires using carbon nanotubes, which are heated to trigger a local chemical reaction depositing metal to 'solder' the junctions. This process improves device performance by an order of magnitude.
A new study by UWM researchers identified two features affecting electron transport in graphene: intrinsic ripples and the Schottky barrier. These characteristics impact the ability to control an electric current, making it challenging to engineer nanoscale transistors with graphene.
Researchers will design and test kites that harness ocean currents and tidal flows to generate electricity, potentially offering advantages over stationary marine turbines. The project aims to develop a more efficient and cost-effective way to tap into the vast kinetic energy of the oceans.
A study found that over half of chronic hepatitis C patients were not treated due to therapy limitations or waiting for newer treatments, leaving them without access to potentially life-saving care. Another study identified a significant 'lost opportunity' for patients to achieve the current best result of treatment.
A new study suggests that market bubbles can be predicted and controlled using chaos theory. Researchers found that extreme events, such as market crashes, follow power law distributions, allowing for early intervention to prevent them. Tiny nudges may make a big difference in controlling these events.
The Deshpande Center is awarding grants to researchers developing innovative technologies in disease monitoring, cancer treatment, water desalination, and digital printing. The project focuses on developing proof-of-concept explorations and validation for emerging technologies with a potential impact on quality of life.
Researchers have discovered a new material that combines the properties of topological insulators and superconductors, with a large energy gap and potential applications in quantum computing and spintronics. This breakthrough has significant implications for the development of next-generation electronic devices.
An interdisciplinary team from Jülich and Aachen produced robust magnetic molecules with neodymium, enabling direct electrical readout. These molecules could replace conventional electronic components, reducing energy consumption and increasing data processing capabilities.
Researchers found that blades with equal chord length, angled at 79 degrees and moving at 1.5 times the current speed can extract maximum energy from tidal currents. A Norwegian company's pilot project is already generating 28 kilowatts of power.
Researchers explore various applications of superconductivity in water purification, earthquake monitoring, high-speed rail travel, and renewable energy storage. The technology also enables the detection of unexploded ordnances and solar bursts, promoting a more sustainable future.
Researchers at the University of Pennsylvania have created a new mechanism for extracting energy from light, increasing efficiency by 3-10 times compared to conventional methods. This breakthrough could lead to more efficient solar cells and optoelectronic devices.
Scientists have developed an atom-based analogue for electronic devices using ultra-cold bosonic atoms and quantum dots. The transport of single particles through the chain of quantum dots enables current production in systems with reduced dimensionality.
Researchers at ORNL introduced small amounts of non-superconducting material to control nanoscale columns, resulting in optimized superconducting performance. The wires achieved record-breaking engineering critical current density, exceeding twice the required level for most applications.
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.
Researchers have discovered a new effect that enables easier production of spin-polarized currents necessary for magnetic chip switching. This breakthrough could lead to more efficient and robust magnetic Random Access Memories (MRAMs) for information processing.
Scientists predict the sun's magnetic field will reverse in three to four months, affecting space weather and potentially cosmic rays. This change marks the midpoint of Solar Cycle 24, with half of 'solar max' behind and half yet to come.
Researchers at Rensselaer Polytechnic Institute have identified electron leakage as the culprit behind LED efficiency droop, a flaw that causes LEDs to lose up to 20% of their efficiency. The discovery may lead to new technologies to solve the problem and develop stronger LEDs.
A study analyzing published research found technology/equipment problems account for almost 25% of operating room errors. Preoperative surgical checklists have been shown to reduce the error rate by half, suggesting their implementation as routine practice.
A study found that brain cells' electrical activity combines stored memories, environmental circumstances, and current state of mind. The researchers used techniques to monitor the electrical activity of neurons in rats' hippocampus, which is used to encode new memories and retrieve old ones.
Researchers demonstrate highest reported drive current on a transistor made of a monolayer of tungsten diselenide, achieving ON currents as high as 210 uA/um and mobility of 142 cm2/V.s. The discovery is significant for future low-power and high-performance integrated circuits.
A new molybdenum-based image sensor has been developed, featuring a single pixel that requires only 1/5th the light energy of current silicon-based sensors. This breakthrough enables high sensitivity in low-light conditions, opening up new possibilities for astrophotography and biological imaging.
Researchers developed a new device called Human Spinal Cord Modulation System (HSCMS) to deliver therapeutic stimulation in a more targeted way. The device is designed to be in direct contact with the spinal cord, providing improved pain relief for patients with chronic pain.
Researchers have found that cuprate superconductors, known for carrying electrical current without resistance, cannot be fully explained by the traditional concept of Luttinger's theorem, which states that electrons carry current. This discovery reveals that there must be alternative explanations beyond electron behavior.
MIT researchers have developed an algorithm that solves graph Laplacians in nearly linear time, using a spanning tree to simplify the calculation. This approach has significant implications for various applications, including scheduling, image processing, and online product recommendation.
Spending on utility-funded energy efficiency programs will double by 2025, reaching $9.5 billion, as states in the Midwest and South expand their programs, driven by policies requiring cost-effective energy savings and energy efficiency resource standards.
Researchers warn of bleak outlook for savanna fuelwood supplies in Africa, with potential exhaustion in 13 years. To avoid this, reducing fuelwood use by 15% annually is proposed until only 20% of households rely on it.
A study by KIT scientists found that time pressure increases excitement in auctions, leading to higher end prices. Emotional responses, such as measured heart rates and skin resistances, play a significant role in bidders' decisions.
A study by Ohio State University researchers reveals that lithium accumulates in the copper current collector of hybrid and electric car batteries over time, affecting their performance. This discovery could aid in improving battery design and performance.
Scientists harness Stocastic Resonance to convert electric energy into mechanical motion in a molecule of hydrogen. This breakthrough enables design of artificial molecules with controlled oscillation.
Researchers unveil creative technologies to capture kinetic energy in Florida's oceans, convert waste thermal energy to electricity, and develop nanophosphor-based grow lights. These innovations could change our sources of energy and improve indoor agriculture.
The UT Arlington physics team has developed a novel thermoelectric generator using copper sulfide nanoparticles and single-walled carbon nanotubes. The technology, which can convert both light and thermal energy into electrical current, shows increases of up to 80% in light absorption compared to earlier methods.
Researchers at Aarhus University discovered bacteria that function as live electric cables, conducting electric currents over centimeter-long distances. These 'cable bacteria' contain insulated wires that transfer electrons, allowing them to thrive in oxygen-free parts of the seabed.
Researchers at the University of Washington have developed a novel method for containing hot plasma using mug-handle-like coils, which require less energy than current methods. The new approach stabilizes the plasma, enabling more efficient fusion energy production.
Researchers have developed a new method to create carbon nanotube sensors using mechanical pencils, overcoming the need for hazardous solvents. The sensors detect minute amounts of gas by altering electrical current flow through the nanotubes.
Researchers aim to create nanoelectronic devices and logic circuits using quantum dots and light, promising breakthroughs in electronic circuitry density and speed. The project combines organic chemistry, semiconductor growth, and nanofabrication to develop a solid-state technology platform.
Researchers at Vanderbilt University have developed a way to combine the photosynthetic protein from spinach with silicon to produce substantially more electrical current. The new design produces current levels nearly 1,000 times higher than previous biohybrid solar cells and has the potential to power small devices.
A study reveals that charge traps in plastic semiconductors are caused by a similar energy level, allowing for the estimation of expected electron current and design of trap-free materials. This breakthrough has important implications for both plastic LEDs and solar cells.
The NIST team has created a versatile measurement system that accurately measures the electric power output of solar energy devices. The new system uses LEDs and can measure spectral response in about 4 seconds, potentially speeding up manufacturing tests for quality control.
Researchers at the National Physical Laboratory have created an electron pump nano-device that can manipulate individual electrons to create a well-defined electrical current. The device achieves this by speeding up the rate of pumping electrons while maintaining accuracy, surpassing previous records.
A UCLA research team created the world's most powerful nanoscale microwave oscillators, which could lead to cheaper and more energy-efficient mobile communication devices. The new oscillators use electron spin instead of charge, offering significant advantages over current silicon-based oscillators.
Researchers at Helmholtz Association confirm the existence of Tayler instability, a magnetic phenomenon that reduces rotation rates and creates powerful fluid flows. This discovery has significant implications for the development of liquid metal batteries and their potential use in renewable energy storage.
The exercise stress test remains an essential tool for diagnosing coronary artery disease, particularly in patients who can exercise. The test is non-invasive and can be administered in doctor's offices, offering a cost-effective and efficient solution.
North Carolina State University researchers have developed a new way to fine-tune wireless power transfer receivers, making the systems more efficient. The system uses electronics to precisely re-tune the receivers in real-time, addressing the problem of minor changes affecting power transmission.
Deep cracks in soil can remain open underground even after they have visibly sealed on the surface, a new study has found. This persistence of cracks affects the flow of water and nutrients through the soil, leading to reduced crop productivity.
Scientists have developed a way to generate power using harmless viruses that convert mechanical energy into electricity. The generator produces enough current to operate a small liquid-crystal display, and the milestone could lead to tiny devices harnessing energy from everyday tasks.
Researchers at Brookhaven National Laboratory and collaborators provide direct evidence for magnetism's role in forming Cooper pairs, a key to high-temperature superconductivity. The findings strengthen confidence in using this theory to identify new materials with improved properties.
Researchers from DOE/Princeton Plasma Physics Laboratory discovered a possible solution to the density limit, a major impediment to harnessing fusion. Tiny, bubble-like islands in plasmas appear to be at the root of the problem, and injecting power directly into these islands could help reach the high temperatures needed for fusion.
Researchers at UWM create a semiconducting material called graphene monoxide (GMO) from graphene oxide, which could revolutionize electronics. The discovery pushes carbon materials closer to replacing traditional wires in devices.
Scientists have developed a technology to produce hydrogen from heat in nuclear power plants, which could reduce global warming by burning only water vapor. This process is more efficient than current methods using natural gas or coal, and experts envision widespread adoption of nuclear-powered hydrogen production.
Computer simulations performed at Sandia National Laboratories demonstrate a high-gain nuclear fusion method, releasing energy 100 times greater than input current. The technique uses a magnetic field to suppress heat loss during implosion, potentially leading to reliable electricity production from seawater.
A team of researchers from Germany and the Netherlands has developed a novel material that enables the switching of spin currents at room temperature in a vertical magnetic field. This breakthrough increases storage density distinctly and has potential applications in future hard discs and non-volatile random access memory devices.
Researchers at NIST and NRL developed a better understanding of how to optimize organic solar cell performance by varying layer thickness. The ideal layer thickness of 2 nanometers results in the best current generation, but further engineering challenges remain to be addressed.
A new software program can detect ICD problems earlier than traditional monitoring methods, potentially saving thousands of patients from health risks. The automated system analyzed large databases of ICD patients and found issues with recalled leads at least a year before recalls were issued.
Penn researchers created the first physical demonstration of 'lumped' optical circuit elements, a milestone in the nascent field of metatronics. By manipulating light waves with nanorods, they replicated the function of electronic circuit elements like resistors and capacitors.
Researchers have discovered a new magnetic structure, skyrmions, which can be moved with significantly less current than traditional magnetic fields. This phenomenon has the potential to revolutionize data storage and processing by reducing energy consumption and increasing efficiency.
The collaboration between pharmaceutical companies and patients is leading to a closer relationship, gleaning more information about medication effects. Experts predict this could usher in an era of personalized medicine.