Articles tagged with Conductivity
Researchers at UC Santa Barbara and their international team have uncovered the mechanism behind doping organic semiconductors using Lewis acids. The discovery reveals that water plays a crucial role in this process, enabling scientists to design even better dopants for greater control over these materials.
Researchers found that graphene bilayer conductivity varies based on the states of carbon atoms at their edges, particularly in relation to quantum spin Hall and Rashba spin-orbit coupling. This property could be useful for spintronics applications, including quantum computing.
Researchers at the Ferdinand-Braun-Institut developed beta-Ga2O3-MOSFETs with a high breakdown voltage and record power figure of merit, achieving unique performance figures close to theoretical material limits. The improved electrical properties lead to lower on-state resistances and higher breakdown voltages.
Scientists from Skoltech developed a novel method to fine-tune the optoelectrical properties of single-walled carbon nanotubes by applying an aerosolized dopant solution. The new approach enables uniform, controllable and easily reproducible aerosol doping, breaking new ground for flexible and transparent electronics.
Physicists from the University of Belgrade have found a way to manipulate superthin layers of graphene to create new artificial materials with enhanced properties. Applying tensile biaxial strain increases the critical temperature, making high-temperature superconductivity easier to achieve.
Researchers reviewed methods to synthesize copper nanowires (Cu NWs) with improved oxidation resistance. Various post-processing methods were explored to enhance conductivity and stability, including high-temperature annealing and organic acid cleaning.
New materials that conduct electricity are of great interest to physicists and materials scientists. Researchers have discovered a type of semimetal, niobium arsenide, which has about three times the conductivity of copper at room temperature.
MXenes' conductivity increases as intercalants and termination species are eliminated, making them suitable for applications like energy storage and wearable tech. Researchers developed a new electron microscopy technique to measure surface chemistry in real-time, paving the way for termination engineering.
Researchers have developed a new method to predict molecular conductivity by calculating interactions between pairs of electrons, resulting in improved accuracy and reduced computational costs. The approach has been shown to outperform traditional models by one-to-two orders of magnitude.
Scientists discover that excess La cations lead to highly anisotropic atomic displacement and high oxygen mobility in apatite-type materials with Si vacancies. This novel concept of 'high oxide-ion conductivity by overbonding' may be useful for designing better ion conductors.
Researchers from Kazan University and Russian Academy of Sciences proved that graphene maintains the causality principle in its conductivity. The study found that graphene's real and imaginary parts satisfy Kramers-Kronig relations precisely.
Researchers from ICFO and European partners cracked the code on graphene's behavior after absorbing light, revealing why conductivity increases or decreases. This breakthrough enables more efficient design and development of graphene-based light detection technology.
Researchers have found that adding nanowires to solid-state electrolytes can increase conductivity, reduce stress, and prevent fires in lithium-ion batteries. The addition of nanowires also improves the battery's rate performance and cyclic capacity, making it a safer alternative.
Researchers have created a new class of crystalline porous organic salts with exceptional proton conductivity, potentially revolutionizing fuel cell technology. The salts' unique structure and strong ionic bonds enable stable pore systems, making them highly efficient electrolytes for fuel cells.
Researchers at University at Buffalo have developed strong yet bendable electronic materials using kirigami-inspired design. The innovation enables pliable circuitry for applications like smart clothing, electronic skin, and bendable displays.
Scientists are working on novel solid state electrolytes to enhance battery energy density and reduce weight. Improved non-flammable and low-cost electrolytes have great potential for lithium metal technology, resulting in increased energy density and lighter batteries.
Scientists at Penn State have created materials that can conduct protons, a process used in fuel cells, and are biocompatible. The protein-based proton conductors show promise for developing implantable medical devices without batteries.
The study reveals that the remarkable surface conductivity of SmB6 is not related to its topological nature but rather due to a shifting of band gaps. This finding opens up new possibilities for energy-efficient information technology and spintronics.
Scientists at Rice and Swansea universities discovered that removing contaminants from carbon nanotubes enhances their conductivity. Vacuum annealing at high temperatures reduced surface contamination, allowing accurate resistance measurements. This breakthrough could lead to more consistent results in nanoscale devices.
Researchers at the Energy Safety Research Institute discovered that hard-to-remove contaminants like iron catalyst, carbon, and water can skew conductivity test results. Cleaning these contaminants using vacuum annealing or argon ion bombardment can improve measurement accuracy, but may also introduce defects that degrade conductivity.
Researchers create a new catalyst by alloying iridium with osmium and then removing the osmium to achieve a balanced structure that supports chemical reactions. The resulting material exhibits enhanced catalytic stability and electron conductivity.
Researchers have identified a factor limiting the conductivity of fluorine doped tin dioxide, a material used in touch screens, solar cells, and energy efficient windows. The discovery could lead to coatings with up to five times higher conductivity, reducing cost and enhancing performance.
Researchers develop new method to dope organic semiconductors with n-type donor molecules using a two-step process involving the use of light. This approach enables significant increases in conductivity, making it suitable for applications such as light-emitting diodes and solar cells.
Researchers measured optical and electrical properties of thin carbon nanotube films, finding that they exhibit conductive behavior with few energy barriers. The team used terahertz-infrared spectroscopy to analyze the charge transfer mechanisms in these films.
Scientists have created a novel ferroelectric material that can be switched on and off using polarization, enabling the development of small, flexible digital memories. The material has potential applications in solar cells and other emerging technologies.
Researchers have created a new material that can store renewable energy efficiently. Metal-organic frameworks exhibit conductivity similar to metals, enabling large-scale storage of solar and wind power. This breakthrough could revolutionize intermittent renewable energy sources.
Researchers developed a method to observe local conductivity changes in memristors using conductive liquid electrolytes. The method reveals the formation of nanoscale spots responsible for conductivity changes, allowing for distinction between electrical and thermal contributions.
Researchers found that electrical conductivity increases as pressure on micro-contact interface between grains increases, defying traditional expectations.
Researchers have developed a printable elastic conductor that retains high conductivity even after being stretched by five times its original length. The new material, made with silver nanoparticles, has potential applications in wearable devices and robots.
Researchers at the University of Minnesota discovered a new nano-scale thin film material with the highest-ever conductivity in its class, making it ideal for optically transparent conducting films. The material has a wide bandgap, allowing light to pass through while maintaining high conductivity.
Researchers have discovered a systematic approach to inducing large-amplitude vibrations in graphene models, leading to increased conductivity. The findings offer a valuable theoretical basis for future experimental work, opening up new avenues for smart materials and all-optical networks.
Researchers at UMass Amherst have developed a 'green' conducting material using microbial nanowires, which can be mass-produced at room temperature from inexpensive renewable feedstocks. This breakthrough could accelerate the development of novel electronic devices and sensors with environmentally friendly technology.
Researchers have developed a flexible transistor that can be stretched to twice its length without significant changes in conductivity. The breakthrough uses a semiconducting polymer confined within an elastic matrix, demonstrating effective transconductivity even under heavy stretching.
Researchers attribute graphene's high conductivity to accelerating effect of electrons interacting with photons in a weak magnetic field. The study uses pseudo-quantum electrodynamics to model electron-photon interactions across space-time dimensions.
Scientists developed a method to print hidden images with commercial inkjet printers that can be revealed only with specific illumination, making it ideal for security-related applications. The technique uses silver and carbon ink to create arrays of rods with varying conductivities, allowing for the encoding of information.
Researchers genetically designed a new strain of bacteria to produce extremely thin and highly conductive wires made from non-toxic natural amino acids. The resulting biowire has a conductivity that rivals many chemically produced organic nanowires, with potential applications in biocompatible sensors, computing devices, and solar panels.
Researchers found a remarkable proton-conducting material in the jelly of sharks' unique electrosensory organs, with conductivity only 40 times lower than Nafion. The discovery may contribute to future studies on shark sensing and unconventional sensor technology.
EPFL researchers have developed conductive tracks that can be stretched up to four times their original length and still maintain conductivity. The new metallic and partially liquid film has a wide range of possible applications, including artificial skin, connected clothing, and on-body sensors.
Scientists at ETH Zurich have developed a new type of transparent electrode using 3D print technology, featuring gold or silver nanowalls on a glass surface. This innovation offers higher conductivity and transparency than traditional indium tin oxide electrodes, leading to improved screen quality and touch responsiveness in smartphones.
Researchers at POSTECH develop a method to form PANI nanosheets on deep frozen ice, resulting in high electronic current flows and conductivity. The process is environmentally friendly, inexpensive, and can produce large areas of nanosheets in minutes.
University of Tokyo researchers created a single-step printing process to form highly conductive and stretchable connections on textiles. The ink, made of silver flakes, organic solvent, fluorine rubber, and fluorine surfactant, exhibited high conductivity even when stretched three times its original length.
Scientists have developed a new type of sensor using a composite material that interacts with CO2 molecules, changing its conductivity depending on the concentration. The sensor can measure CO2 concentrations over a wide range without requiring high temperatures or energy.
Researchers at ETH Zurich have developed a highly sensitive temperature sensor called cyberwood, which mimics the properties of temperature-sensitive plants. By incorporating plant cells and pectin molecules, the material responds to small temperature fluctuations with large changes in conductivity.
Scientists have devised a combination of new experiments and better theoretical modeling to settle the dispute between experimental and theoretical scientists. The new results are consistent with the hypothesis that microbial nanowires possess metallic-like conductivity, contrary to previous models.
Researchers have created a theoretical model to tune the conductivity of graphene zigzag nanoribbons by applying periodic ultra-short pulses. This could lead to the development of ultrafast electronic switches and graphene-based devices that only conduct electricity when an external pulse is applied.
Researchers discovered graphene devices have different electronic properties at edges and centers. Edge conduction was found to be p-type, while the center exhibited n-type electron conduction. These findings offer insights into developing graphene nanoribbon devices and studying edge photocurrents.
Researchers have discovered conditions under which graphene nanoribbons can function as electronic switches. The study reveals that the transport gap, a critical factor for switch functionality, is inversely proportional to the ribbon's width and independent of crystallographic orientation.
Three students from Northwestern University created a device using pencil traces on paper to measure strain, while also detecting hazardous chemical vapors. The technology uses the conductive properties of graphene, which is shed when drawing on paper, to create a rudimentary electrode.
Researchers at CU-Boulder created a global electric circuit model using a climate model, revealing that the atmosphere is generally less conductive over the equator and above Southeast Asia. The model shows seasonal changes in conductivity and its impact on lightning currents.
Researchers at UMass Amherst have identified the importance of amino acids in facilitating electrical conductivity in bacterial pili, a paradigm shift from traditional understanding of biological electron transfer. This discovery has significant implications for environmental cleanup and renewable energy sources.
North Carolina State University researchers developed conductive wires with a liquid metal alloy core, increasing stretchability by orders of magnitude. The new wires have potential applications in electronic textiles, headphones, and phone chargers.
Researchers created a defect in the structure of a single-layer crystal by inserting an extra particle, then observed as the crystal 'healed' itself. The discovery has important implications for improving conductivity in electronics and other materials science applications.
Researchers from Brown University and ATMI Inc. report the best-ever transparency and conductivity performance for an ITO made using a chemical solution, potentially offering a low-cost method for manufacturers. The team created conductive films with 93% transparency and comparable conductivity to glass plates.
A team of researchers has created a 'write-once-read-many-times' DNA-based memory device that can encode information using ultraviolet light. The device, made from salmon DNA and silver nanoparticles, retains information indefinitely.
Scientists have found that stretching single molecules can increase their electrical conductivity, contradicting the common assumption that longer wires are less conductive. The discovery uses force-induced resonant tunneling and has significant implications for microelectronics and biological sensing.
Researchers at Penn propose two-dimensional graphene metamaterials that can manipulate electromagnetic waves in the infrared spectrum. The metamaterials' conductivity can be altered using voltage, enabling transformation optics and applications in telecommunications, imaging, and signal processing.
The researchers discovered that graphene's mobility and conductivity decrease significantly when more than one layer is present. However, even the reduced mobility is higher than in many conventional semiconductors, offering a potential solution by using substrates to 'siphon off' heat generated by electric current.
Scientists at Eindhoven University of Technology have developed a new transparent, conducting film made from commonly available materials, offering a rare metal-free alternative to indium tin oxide. The material, produced in water, has an important advantage over ITO: it is environment-friendly and suitable for flexible displays.
Researchers found that single-walled carbon nanotube coatings can develop irreversible changes when bent, reducing conductivity. They suggest ways to engineer the films to minimize these effects and achieve deformability.
University of Houston researchers have developed highly conductive nanocomposites using polycarbonate and carbon nanotubes, improving the integrity of electronics in aircraft, computers, and iPhones. The findings could lead to antistatic coatings and electromagnetic interference shields, increasing device lifespan and efficiency.