Articles tagged with Voltage
Researchers create high-performing single-molecule diode by controlling electrostatic environment, increasing rectification ratio to 200, and enabling faster electronics. The breakthrough enables new routes to charge and energy flow at the nanoscale.
MIT researchers have created a new ultralow-power circuit that can harness more than 80% of the energy from tiny solar cells, enabling it to run for months without battery changes. The chip achieves this efficiency improvement while powering devices directly from batteries.
A team of researchers from Boston College and China's University of Science and Technology has developed a new method to harness the power of solar water splitting using hematite and silicon as absorbers. The 're-growth' technique improved the material's surface, doubling electrical yield and achieving a record low turn-on voltage.
Researchers at MIT have developed a new technique for producing nanofibers that increases the rate of production fourfold while reducing energy consumption by over 90%. The technique uses tiny emitters to regulate fluid flow, resulting in uniform fibers even at high manufacturing rates.
By pairing graphene and hexagonal boron nitride, researchers can control light waves and create unique optical materials. This enables the development of tiny optical waveguides and new applications in infrared spectroscopy and imaging devices.
North Carolina State University researchers develop tunable liquid metal antenna controlled by voltage, allowing for dynamic changes in operating frequency and radiation pattern. This innovation enables miniaturization and adaptation to correct near-field loading problems, making it highly desirable for mobile devices.
Researchers from Paris and Helmholtz-Zentrum Berlin successfully switched ferromagnetic domains on and off with a low-voltage electric field near room temperature. This breakthrough could lead to the development of efficient data storage devices with reduced power consumption.
Researchers have developed a novel photoelectrode that solves the problems of inefficient hydrogen generation in acidic electrolytes. The new composite presents high photovoltage and photocurrent densities, as well as chemical protection against corrosion.
Researchers have developed a magnonic holographic memory device that can recognize patterns and improve speech and image recognition hardware. The device uses spin waves to encode and decode information, allowing for parallel processing and potentially more efficient computation.
Researchers from the University of Tokyo have developed a new e-paper technology that can be used like a whiteboard for large writing spaces. The display is made from bi-colored microparticles and can be switched between black and white by applying a voltage or magnetic field.
Recent advances in voltage-sensitive dye imaging have paved the way for real-time functional imaging of live tissue electrical activity. Research by Larry Cohen and his team has enabled this frontier field, with recent articles demonstrating its legacy.
Researchers at Stanford University have developed a rechargeable aluminum battery that offers a safe alternative to commercial batteries. The new technology boasts ultra-fast charging times of just one minute and can withstand over 7,500 charge-discharge cycles without losing capacity.
A Griffith University research project has developed an intelligent scheduling system to manage peak demand and load balancing in low-voltage electricity distribution networks. The system uses battery energy storage to store surplus energy during the day and distribute it when needed, reducing peak generation charges and improving powe...
Dielectric elastomers have made significant breakthroughs in soft robotics applications, enabling the creation of flapping robotic wings with high-energy conversion efficiencies. The new resonance phenomenon discovered by researchers can make the artificial joint bend up and down, mimicking the motion of a bird's wing.
The smart bandage detects early tissue damage from pressure ulcers, also known as bedsores, by exploiting electrical changes that occur when a healthy cell starts dying. It uses impedance spectroscopy to create a spatial map of the underlying tissue based on the flow of electricity at different frequencies.
Researchers at MIT have developed a new transmitter design that reduces off-state leakage 100-fold, allowing for longer battery life in IoT devices. The circuit uses a charge pump to generate a negative charge when idle, reducing power consumption by 20 picowatts.
Researchers discover molybdenum disulfide thin-film transistors functional at high temperatures, demonstrating potential for extreme-temperature electronics. The material's stable operation after two months suggests new applications in harsh environments.
Researchers at Chalmers University of Technology have discovered that adding carbon nanoballs to insulation plastic can increase the voltage by up to 26%, resulting in a 26% efficiency gain in electric power transmission. This could lead to more efficient power grids and sustainable energy systems.
A new signal amplification process has been discovered by a team of University of California, San Diego researchers that is far more efficient than standard processes. The mechanism, known as cycling excitation process (CEP), amplifies signals in optoelectronic systems at much lower voltage and noise.
Scientists at Penn State have discovered a miniscule vacuum gap that creates an energy barrier for electrons moving between layers of material. This gap is crucial for designing next-generation electronic devices, such as vertical tunneling field effect transistors.
A team of biomedical engineers has discovered that a key ion channel in the heart, KCNQ1, is affected by both membrane voltage and an accessory subunit, KCNE1, which determines the properties of electrical signals. This understanding provides a rationale for targeted drug therapy to treat cardiac arrhythmia without affecting other tiss...
Researchers used attosecond XUV spectroscopy to capture individual snapshots of electrons transitioning from the valence shell to the conduction band in silicon. The transition takes less than 450 attoseconds, allowing scientists to study complex electronic processes that were previously too fast to be approached experimentally.
Scientists have created the world's thinnest electric generator by harnessing the piezoelectric properties of a single atomic layer of MoS2. The device is optically transparent, extremely light, and bendable, making it ideal for wearable applications.
Researchers from UT Dallas have created a new technology that can extend the power life of wearable computers and smartphones. The technology uses a single electron to control energy consumption inside transistors, reducing operating voltage and increasing signal strength.
Researchers at Caltech have developed a new tool that uses genetic engineering and light to visualize and map neural networks in living organisms. The tool, which detects changes in membrane voltage, allows for real-time observation of neuronal activity and its effects on behavior.
Scientists from North Carolina State University have developed a method for controlling the surface tension of liquid metals by applying very low voltages. This allows researchers to manipulate the shape of antennas, complete or break circuits, and explore various applications in microfluidic channels, MEMS, photonic and optical devices.
Researchers have discovered a novel form of superconductivity in two-dimensional electron liquids, characterized by the presence of quantum point contacts. These tiny channels enable the flow of superconducting currents, but with a twist: the spin degree of freedom is broken, allowing for new types of electron transport.
Researchers at Joint Quantum Institute develop universal theory for Efimov states, enabling prediction of chemical processes involving three or more atoms. The new theory successfully incorporates short-distance regime and van der Waals force, predicting a series of Efimov states with varying binding energies.
NASA's Goddard Space Flight Center team has demonstrated that electrostatically actuated microshutter arrays are as functional as magnetically activated arrays, eliminating macro-moving parts and lowering voltage needs. This advancement makes them suitable for Explorer-class missions and larger fields of view.
Researchers from Russia, Belarus and Spain create a microscopic force sensor based on carbon nanotubes, allowing accurate control over coaxial cylinders in two-layer nanotubes. The device can measure forces as small as tenths of a nN, opening up potential applications beyond micro scales.
Yu Chen and colleagues find that superconductivity and dissipation can coexist under generic conditions in a universal manner, thanks to a peculiar nonequilibrium state of quasiparticles. The researchers also discover an unexpected property: when a magnetic field is applied, the superconducting area expands and is enhanced.
Researchers have developed a method to produce silver nanostructures using high-pressure diamond plates, outperforming traditional chemical methods. This approach enables the creation of flexible electronics, transparent electrodes, and new classes of chemically and mechanically stable nanostructures.
Rensselaer researchers predict the electrical response of metals to extreme pressures, which could benefit computer chip design. The study found that specific pressure decreases electrical resistance in different materials.
Researchers at NIST have created a new type of FIB microscope that can image nonconductive materials and analyze chemical composition. The instrument uses lithium ions to produce lower-energy beams than traditional SEMs, enabling greater detail in nanostructure imaging.
A Danish/American research team has discovered an accelerator pedal that controls the speed of a molecular machine. By varying the distance between the starting and stopping points, researchers can increase or decrease the speed of the molecule.
Researchers at Purdue University developed a nanotube coating that significantly reduces the voltage required for mass spectrometers, allowing for miniaturization and increased portability. The technique simplifies analysis by nearly eliminating background noise, making it gentler on fragile molecules.
Researchers at the University of Utah created the smallest plasma transistors that can operate in extreme environments, including nuclear reactors. These devices have the potential to enable innovative applications such as medical X-ray imaging and real-time air quality monitoring, and could be used to control robots in nuclear reactors.
Researchers have developed a kinetic energy harvester that captures the energy generated by human movements and converts it into electrical energy. The system uses a flexible cantilever to bend with body movements, producing a small but significant voltage that can be stored in a capacitor.
A paper-based device replicating human brain's electrochemical signalling has been created by Chinese researchers. The thin-film transistor (TFT) can mimic the biological synapse and could be used to build lightweight and biologically friendly artificial neural networks.
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 develop a new method of wirelessly recharging medical device batteries with ultrasound, offering a safe and efficient means of wireless power transmission. The technology has been tested in animal tissue and demonstrated promising results.
Researchers at PPPL have developed an online experiment that allows users to control a real physics laboratory from any location. The Remote Glow Discharge Experiment enables users to interact with a plasma discharge, observing and controlling its effects on the apparatus.
A new super-thin silicon membrane developed at the University of Rochester enables the creation of miniaturized pumps that can be powered by small batteries, paving the way for portable diagnostic devices. This breakthrough could lead to applications in medical and electronic device cooling, as well as cost-effective fabrication methods.
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.
Boston College chemists develop unique photoanodes and photocathodes using hematite and nickel iron oxide to achieve a 50% increase in photovoltage. This breakthrough brings researchers closer to harnessing artificial photosynthesis for efficient solar energy storage.
Researchers have used data from the IceCube Neutrino Observatory to identify new information about the origin of cosmic rays. The study provides new constraints for models explaining the acceleration and propagation of cosmic rays, with potential implications for understanding their impact on human DNA and electronics in space.
Researchers from UConn have captured the structural dynamics of a protein channel in the mitochondrion using fluorescent probes. The study reveals that the channel complex changes its structure in response to changes in the inner membrane's electrical field, providing new insights into how cellular transport systems harness energy.
Researchers from NTNU have developed a method to control the behavior of oil droplets using an electric field, which could improve emulsion stability and prevent separation. This technique may be useful in various industries, including food production, cosmetics, and oil recovery.
The KASCADE-Grande experiment detected a bend in the energy spectrum of high-energy cosmic rays at different energies for light and heavy particles. The study reveals a flattening of the spectrum beyond the knee, indicating extragalactic acceleration, with the ankle structure appearing first in light primary particles.
A graphene single-electron pump provides a fast enough electron flow to create a current standard, overcoming the Achilles heel of metallic pumps. This innovation marks a major step forward in using graphene to redefine the ampere.
A new solid-state controllable light filter has been developed to shield preterm infants from most wavelengths of visible light, promoting better maturation. The device switches between blocking out all light and allowing red light through, enabling medical staff and parents to monitor the infants without disrupting their sleep.
Researchers at the University of Manchester have developed a graphene-based transistor with bistable characteristics, which can rapidly switch between two electronic states. This technology has potential applications in medical imaging and security screening, as well as enabling the creation of new architectures for electronic components.
ReRAM cells exhibit battery voltage properties, violating traditional memristor theory. Researchers reveal new insights into the electrochemical components, enabling optimized design and potential new applications
A team of MIT researchers has published a detailed analysis of the factors that limit the efficiency of artificial leaf systems, which could lead to the production of a commercial viable prototype. The study suggests that combining the right solar cells and catalysts can improve efficiencies of 16 percent or more.
Researchers from Polytechnic University of Catalonia develop a low-cost electroporation system for cell cultures, reducing stress on cells and costs by up to 90%. The new system enables safer and more efficient gene therapies and molecular biology experiments.
Biologists at Tufts University have identified a unique bioelectric signal in cells that are likely to develop into tumors, which they can use to detect early cancer. By manipulating the electrical charge across cells' membranes, they can lower the incidence of cancerous cells and suppress abnormal cell growth.
Researchers have developed a novel application of spintronics that converts magnetic energy to electric voltage efficiently and directly. The device utilizes magnetic nanostructures and manipulates magnetization dynamics to generate alternating current (AC) voltages from direct current (DC) magnetic fields.
NIST scientists discovered a simple and fast process to deposit uniform, ultrathin layers of platinum atoms on a surface. By increasing the voltage beyond normal levels, they created a hydrogen layer that quenches further metal deposition, allowing for precise control over film thickness.
Researchers have developed a low-energy defibrillation scheme that significantly reduces the energy needed to re-establish a normal rhythm in the heart's main chambers. This novel electrotherapy could be less painful than existing implantable defibrillators and may even fall beneath the threshold at which patients begin to perceive pain.
The material combines a plastic polymer with nickel particles, allowing it to heal efficiently while maintaining conductivity. The researchers tested the material by cutting it multiple times, finding it could regain up to 75% of its strength within minutes.