Articles tagged with Electrical Resistance
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Scientists have identified magic-angle twisted bilayer graphene as a promising material for high-temperature superconductivity. Researchers found that nematic order in MATBG originates from the interference between fluctuations of a novel degree-of-freedom combining valley and spin degrees.
Researchers at UToledo validated geoelectrical methods for detecting anomalies related to disturbed ground and human decay. Ground-penetrating radar showed stronger signals for mass graves than individual ones.
Researchers at Pusan National University have developed oxidation-resistant copper thin films, which could potentially replace gold in semiconductor devices. The films' flat surface reduces the growth of copper oxides on its surface, making them resistant to corrosion.
An international team of scientists has developed an organic semiconductor that can operate in the 5G frequency range, with a structure featuring ultralow capacitance and resistance. The innovation paves the way for mass manufacturing at low cost using solution processing techniques.
A team of researchers at Osaka University created a thermocouple made of gold and platinum nanowires to measure the temperature directly next to a nanopore. They found that thermal energy was dissipated in proportion to the momentum of the ionic flow, in line with Ohm's law predictions.
Researchers at Brown University have discovered a new type of strange metal behavior in bosonic Cooper pair materials, challenging traditional electrical rules. This discovery may help explain high-temperature superconductivity and its potential applications.
Researchers from Tokyo Tech and AIST develop a strategy to restore the low electrical resistance in all-solid-state lithium batteries. By heating the interface between the positive electrode and solid electrolyte, they reduce the resistance to comparable levels of unexposed batteries.
A novel carbon-based biosensor developed at the University of Technology Sydney detects electrical signals sent by the brain, translating them into commands for autonomous robotic systems. The biosensor overcomes three major challenges in graphene-based biosensing: corrosion, durability, and skin-contact resistance.
Researchers at Nagoya University developed a scalable method to produce high-temperature superconductors with artificial pinning centers, improving their properties. The technique, known as grain boundary engineering, can help develop stronger, inexpensive, and high operating temperature superconductors.
The 'strange metal' state in high-temperature superconductors exhibits a linear function of temperature, suggesting the involvement of quantum entanglement. By suppressing charge density waves, researchers were able to restore this state, expanding its range and offering a promising new avenue for research.
Scientists found that amorphous carbon coatings used to protect optical fibers from moisture can break down due to interaction with water molecules. The coating's thickness increases, leading to an irreversible increase in electrical resistance and a decrease in transparency.
Researchers developed a sensitive new way to detect and count transistor defects, which limit performance and reliability. The method works with traditional Si and SiC materials, identifying defect type and number with simple DC measurement.
Researchers have found a way to stabilize the novel quantum effect in graphene at room temperature, which could lead to breakthroughs in data storage and computer components. The discovery was made using standard microfabrication techniques and showed that the material can generate its own magnetic field.
Researchers at Ural Federal University successfully experimentally determined the optimal thickness of an aluminum layer in a fully solid-state lithium power source. The results will be used to create high-energy batteries with increased operational safety and lower production costs.
Researchers have measured the transverse electrical resistivity of a single carbon fiber using the van der Pauw method, revealing directional-dependent properties. This discovery paves the way for developing lightning strike protection technologies for aerospace and other industries.
MnBi2Te4's unique properties make it suitable for ultra-low-energy electronics and observing exotic topological phenomena. The material is metallic along its one-dimensional edges while electrically insulating in its interior.
Researchers from SUTD discover a family of 2D semiconductors with Ohmic contacts, reducing electrical resistance and generating less waste heat. This breakthrough could pave the way for high-performance and energy-efficient electronics, potentially replacing silicon-based technology.
Scientists at Tokyo University of Science develop a new methodology to investigate the elusive electric double layer (EDL) effect in all-solid-state batteries. The study reveals that the EDL effect is dominated by the electrolyte's composition and can be suppressed through charge compensation, leading to improved performance.
Researchers have found a material that exhibits superconducting properties at extremely low temperatures, providing new insights into high-temperature superconductivity. The discovery was made by studying an unusual 'strange metal' called YbRh2Si2, which showed linear resistance and temperature relationships.
A researcher at the University of Tsukuba introduces a new theoretical model of high-temperature superconductivity based on the calculation of the Berry connection. This model helps explain experimental results better than the current theory and may enable lossless energy transmission.
Researchers at the National Research Council of Science & Technology have developed a novel anode material for sodium-ion batteries using low-cost silicone-based oil. This material can store 1.5 times more electricity than commercial lithium-ion batteries and maintains its performance even after 200 cycles.
Researchers have designed optical rectennas that can capture excess heat and turn it into usable electricity, achieving efficiencies 100 times higher than previous tools. The devices use a phenomenon called resonant tunneling to pass through solid matter without losing energy.
Geophysicists at St. Petersburg State University have developed an algorithm to combine electrical resistivity tomography (ERT) and radiomagnetotelluric (RMT) methods for more accurate subsurface imaging. The joint inversion of CSRMT and ERT data provides a closer match to borehole data, improving the accuracy of geophysical exploration.
Researchers found that exotic metallic materials exhibit poor electrical conductivity due to tiny amounts of impurities or defects. These defects cause electrons to remain localized, hindering current flow at low frequencies, but allowing it at high frequencies.
A mathematical model, the BathRC model, enables doctors to calculate the amount of restriction required to safely ventilate two patients using one ventilator. Accurate matching and correct resistance are key to this process.
Researchers at the University of Manchester have discovered a nanomaterial that mimics the 'magic angle' effect in twisted bilayer graphene, offering an alternative medium to study superconductivity. The new findings show strong electron-electron interactions in rhombohedral graphite, which could lead to game-changing effects in materi...
A research team from Singapore University of Technology and Design has discovered a new strategy to resolve contact resistance in 2D semiconductor devices. They found that an ultrathin film of Na3Bi can be used as a metal contact with low contact resistance, retaining the intrinsic electronic properties of 2D semiconductors.
Researchers from Argonne National Laboratory and Northwestern University used electron holography and atom probe tomography to study grain boundaries in a solid electrolyte material. They found that impurities such as silicon and aluminum caused resistance, which can be mitigated by intentionally inserting elements into the material.
Researchers found that commercial fast-charging stations cause high temperatures and resistance damage to electric car batteries, leading to capacity loss and potential fires. The University of California, Riverside developed an adaptive fast-charging algorithm to mitigate this issue.
Research from the University of Göttingen reveals that graphene's electrical resistance varies considerably depending on its proximity to the underlying crystal. At low temperatures, variations in local resistance were found to be up to 270 percent.
A new synthesis method has been developed to unlock the secrets of 'strange metals', which exhibit unusual temperature behavior. The research team's findings confirm that quantum-critical charge fluctuations play a key role in their behavior.
Researchers have recorded how electrons interact with atomic vibrations in solids, capturing the processes that cause electrical resistance and superconductivity. The study enables visualization of dynamic properties of quantum materials, shedding light on high-temperature superconductivity and other phenomena.
Researchers have discovered a new high-temperature superconductor (Ba2CuO4-δ) with a transition temperature above 73K, featuring an exceptionally compressed local octahedron and heavily over-doped hole carriers. This finding challenges the long-held scenario of superconductivity in cuprates.
Researchers have discovered that integrating graphene with metal in circuits reduces contact resistance impact from humidity, enabling more efficient sensors. This breakthrough could lead to significant cost reduction and better environmental monitoring.
Researchers at George Washington University have created a metallic hydrogen compound that exhibits superconductivity at near-room temperature. The discovery could enable more efficient energy transmission and powerful computing systems.
Researchers from NUS have made a breakthrough in understanding the magneto-resistance effect and its relation to spin texture of topological surface states. The team's findings could help in addressing the issue of spin current source selection in spintronic devices.
Researchers at Stanford University are using the vibrational Stark effect to measure an enzyme's electric field as it evolves into antibiotic-resistant form. They aim to understand the correlation between electric field changes and antibiotic resistance, with potential implications for developing new antibiotics.
Researchers at Tohoku University have developed a new phase change material, Cr2Ge2Te6, that achieves a significant reduction in power consumption for data recording in phase change memory (PCRAM). The material exhibits an inverse resistance change and combines low operation energy, high data retention, and fast operation speed.
Lobachevsky University scientists find that moderate temperature increase induces small electrical responses in plant leaves. These responses are observed even at lower temperatures, suggesting a possible natural occurrence under field conditions. The research opens prospects for controlling plant resistance to high temperatures by reg...
A research group at the University of Tokyo has quantified the impacts of three electron-scattering mechanisms on silicon carbide (SiC) power semiconductor devices. The team discovered that suppressing electron scattering can reduce resistance under the SiC interface by two-thirds, which is expected to lower energy consumption in elect...
Vanderbilt researcher Ken Catania measured the shock from interacting with a small electric eel to solve an equation for calculating power released by bigger eels. The study revealed that eels are efficient at delivering electricity, generating hundreds of volts while maintaining high efficiency.
Researchers discovered a new chromium-based superconductor with an unusual electronic state, characterized by linear magnetic resistance at ultralow temperatures. This finding could contribute to the development of new superconductors and materials with unique properties.
Researchers from the University of Copenhagen and Cornell University have discovered why certain iron-based materials exhibit fine superconducting properties. The findings suggest that individual modes of operation facilitate superconductivity in these materials.
Researchers found that electrical conductivity increases as pressure on micro-contact interface between grains increases, defying traditional expectations.
Researchers at Duke University have developed a fully-printed digital memory device using an aerosol jet printer and nanoparticle inks. The device stores information in states of resistance, allowing for flexible electronics on bendable materials, and has a write speed rivaling that of flash drives.
Scientists studied the effect of noble gas argon on pressurized hydrogen and found that it did not ease the transition to a metallic state. The team brought argon-doped hydrogen up to extreme pressures, but observed no structural changes, indicating that argon is not the ideal facilitator for metallic hydrogen.
Researchers at Aalto University have visualized the effect of oxygen ion migration on complex oxide materials, leading to uniform and reversible changes in electrical resistance. This finding could pave the way for the development of resistance-switching random access memories.
Researchers have created extremely sensitive sensors using graphene-infused silly putty, which can measure breathing, pulse, and blood pressure with unprecedented sensitivity. The material shows promise for applications in medical devices and diagnostics, offering a potentially inexpensive alternative to traditional sensors.
MIT researchers have developed low-cost chemical sensors that enable smartphones to detect trace amounts of toxic gases. The sensors, made from chemically altered carbon nanotubes, can be worn by soldiers on the battlefield or people working with hazardous chemicals to rapidly detect the presence of chemical weapons.
A new magnet has been discovered that can control Dirac fermions with zero mass. The researchers found that applying a magnetic field perpendicularly to the layers suppressed conductivity by 1000 percent and confined Dirac electrons, leading to a bulk half-integer quantum Hall effect.
Researchers from Max Planck Institute achieve light-induced lossless electricity transmission in fullerenes, contributing to the search for practical superconducting materials. The discovery could lead to a better understanding of high-temperature superconductivity and the development of artificial superconductors.
Researchers at Okinawa Institute of Science and Technology discover anomalies in electron behavior on liquid helium systems, shedding light on zero-resistance phenomenon in semiconductors. The study sheds new insights into quantum physics and its applications.
Researchers from Russia and Italy develop neural network based on polymeric memristors, enabling machine vision and intelligent control systems. The networks can learn and perform logical operations, offering a promising alternative to traditional computing methods.
Scientists have discovered a new material that exhibits extremely large magnetoresistance due to its superfast electrons. The material, niobium phosphide, has the potential to revolutionize the design of electronic components, enabling faster processing and storage of data.
Researchers at RIKEN have successfully demonstrated the integer quantum Hall effect in a new type of film, known as a 3D topological insulator. By quantizing surface Dirac states, they overcame limitations that had hindered previous efforts to harness these materials for low-power consumption electronics.
Measurements at BESSY II have shown how spin filters form within magnetic sandwiches, enhancing understanding of processes critical for future TMR data storage devices and other spintronic components. The discovery reveals new interfacial effects that strongly influence the amplitude of tunnel magnetoresistance.
Researchers investigated GaN-based LED structure irradiation with protons and found increased resistance in p-type GaN layers compared to n-type. The observed increase is attributed to lower initial carrier density in p-type GaN, resulting from inadequate doping technology.
The nanocryotron device uses a single layer of niobium nitride deposited on an insulator to create a simple superconducting circuit. By controlling the flow of current through the circuit, it can act as a switch, making it a potential component for digital computers.
Scientists are developing new technologies at the atomic scale to create ultra-low-power electronics. This breakthrough has the potential to revolutionize the electronic industry, enabling smaller, more efficient devices that can be powered by longer-lasting batteries.
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.