Articles tagged with Graphene
The study reveals how twisted graphene sheets behave and their stability at different sizes and temperatures, providing insights into self-alignment mechanisms and forces. This fundamental research could pave the way for manufacturers to achieve fine control over twist angles in 2D material structures.
Scientists have created a conducting boundary with zero bandgap in hexagonal boron nitride sheets by stacking ultrathin sheets in a particular way. This discovery could lead to the development of new all-hBN or all 2D nanoelectronic devices.
Researchers have developed a graphene system that combines superconducting, insulating, and ferromagnetic properties, enabling new physics experiments and potential applications in quantum computing. The device was created using an ultrathin trilayer graphene structure with boron nitride layers.
Researchers successfully combined graphene with tandem perovskite-silicon solar cells to achieve efficiencies of up to 26.3%, almost doubling the efficiency of pure silicon. This new approach enables large-area solar panels with reduced production costs.
Researchers from JMU have successfully demonstrated the existence of spin centers in boron nitride crystals, exhibiting magnetic dipole moments and optical properties. This discovery paves the way for developing artificial two-dimensional crystals with tailored properties.
Researchers at Aalto University and University of Jyvåskylä reveal the origin of graphene's superconductivity, attributing it to a subtle quantum mechanics effect. This discovery could help understand high-temperature superconductors and lead to room temperature operation.
A new study by Chung-Ang University researchers reveals that graphene forms a hybrid layer with copper oxide, significantly slowing down corrosion. After an initial period, graphene appears to increase copper corrosion rates, but a longer-term hybrid structure becomes protective over 1 year.
Researchers at Rice University and Oak Ridge National Laboratory developed a new method to produce laser-induced graphene (LIG) with features more than 60% smaller than traditional macro versions. This technique creates LIG with almost 10 times smaller dimensions, making it ideal for flexible electronics applications. The scientists su...
Researchers develop process called remote epitaxy to manufacture flexible semiconducting films on a large, thick wafer. The team can then peel away the film, reuse the wafer, and create multiple functionalities in a cost-effective way.
Researchers at UT University have developed an algorithm that improves Raman spectroscopy's signal-to-noise ratio, allowing for faster graphene mapping. The technique can also be applied to other two-dimensional materials, such as germanene and silicene.
Researchers used persistent homology and molecular dynamics simulations to study water molecules on graphene surfaces. They found that water molecules form stable polygonal shapes, which evolve into 3D tetrahedral structures after three layers are added. This discovery provides insights into the transition between surface and free water.
Researchers created and imaged a novel pair of coupled quantum dots, which could serve as robust quantum bits for a quantum computer. The patterns of electric charge in the islands cannot be fully explained by current models of quantum physics, offering an opportunity to investigate new physical phenomena.
Researchers found graphene can withstand more than a billion cycles of high stress without breaking. The material's unique structure is attributed to its regular and simple lattice, making it highly resistant to fatigue.
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.
The Graphene Flagship has published a comprehensive guide to graphene manufacturing and processing, providing a single source of knowledge for researchers and industry. The handbook encompasses over 1,500 references and covers techniques for production and characterisation of graphene-related materials.
Researchers at Rice University have developed a 'flash graphene' process that can turn bulk quantities of waste material into valuable graphene flakes. The process is quick, cheap, and produces high-quality graphene with reduced greenhouse gas emissions.
Researchers have developed a method to synthesize large-area, atomically thin molybdenum disulfide films with modified structures depending on the synthesis temperature. The resulting films show promise for use in electronic devices and optical communication, with potential breakthroughs in transparent and flexible electronics.
IBS researchers successfully grow large-area, single crystal bilayer and trilayer graphene films on Cu/Ni(111) alloy foils with specific stacking patterns. The resulting graphene sheets exhibit exceptional thermal conductivity, mechanical performance, and electrical transport properties.
Researchers at Penn State have developed a wearable gas sensor that detects gases, biomolecules, and chemicals using nanomaterials. The device's self-heating mechanism improves sensitivity and allows for quick recovery and reuse.
Scientists have successfully generated and manipulated spin currents in graphene, a unique material for long-distance spin transport. This breakthrough has the potential to revolutionize the development of efficient and versatile spin-based technologies.
Researchers used computer modeling to refine graphite's melting curve, finding it actually undergoes sublimation. Graphene was found to 'melt' into a gaseous state, enabling better understanding of phase transitions in low-dimensional materials.
Researchers at Peter the Great St.Petersburg Polytechnic University develop a theory of transients in graphene, exploring its unique properties that deviate from expected behavior. The study's findings have significant implications for investigation of heat transport and other nonequilibrium thermodynamic processes in graphene.
Researchers quantify tiny height differences and detect different atom arrangements in silicene using low-temperature atomic force microscopy. The unevenness, known as buckling, influences the material's electronic properties, unlike graphene.
Physicists have discovered that an existing technique is more accurate in explaining the 'critical temperature' of superconductivity in pure, single-layer graphene. This finding has significant implications for understanding graphene's diverse structural properties and potentially aiding the development of new technologies.
Scientists develop an all-optical switch operating in the femtosecond range with low energy consumption, breaking the trade-off between switching speed and energy. The device uses a nanoscale waveguide based on plasmonics and graphene to control optical signals.
Researchers at Weizmann Institute of Science have visualized electrons flowing through graphene, mimicking the flow of liquid through a pipe. This behavior has important implications for creating new electronic devices with reduced resistance.
Researchers successfully synthesized a graphene nanostructure with magnetic properties, fulfilling a decades-old prediction. The structure's high exchange coupling energy enables stable spin-based logic operations at room temperature.
The Graphene Flagship has launched eleven Spearhead Projects to catalyse commercialisation of graphene-enabled products. These projects combine innovative research with industrial ambitions, aiming to boost technology readiness levels and bring graphene-based technologies to market.
Researchers have successfully converted large-area bilayer graphene into the thinnest possible diamond-like material, F-diamane, under moderate pressure and temperature conditions. This flexible and strong material has potential for industrial applications in nano-optics and nanoelectronics.
Researchers developed graphene-integrated composites to improve strength and properties of fibre-reinforced composites. These materials can withstand extreme temperatures, humidity, and lightning strikes, making them suitable for aerospace and automotive industries.
The study reveals that electrochemical reactions between water and oxygen can control the physical properties of graphene and other two-dimensional materials. This discovery has significant implications for developing flexible displays, high-speed transistors, and next-generation batteries.
Researchers developed a graphene-titania composite that degrades up to 70% more atmospheric nitrogen oxides than standard titania in real pollutant tests. The composite can be coated on materials like concrete to passively remove pollutants from the air, promoting a healthier environment.
Researchers from Kiel and Copenhagen developed a new computational model to simulate the detailed behavior of electrons in graphene nanoribbons. The model predicts that correlation effects due to electron repulsion have a dramatic influence on local energy spectrum, enabling precise control over electronic properties.
Researchers developed a high-efficiency and low-cost preparation method of 2D materials using intermediate-assisted grinding exfoliation. The technology overcomes mass production challenges, enabling the commercialization of 2D materials for various applications.
Researchers at Columbia University have developed a new way to control the properties of two-dimensional materials by adjusting the twist angle between them. By creating multiple moiré patterns in a graphene-boron nitride device, they were able to study the effects of coexisting moiré superlattices on a layer of graphene.
Researchers developed a scalable method to grow orthorhombic molybdenum oxide (α-MoO3) nanosheets on graphene substrates using van der Waals epitaxial growth. The nanosheets retain bulk-like structural and electrical properties even at thicknesses of 2-3 layers, making them suitable for optoelectronic devices and power electronics.
New research reveals that multilayer graphene behaves differently when bent a little versus a lot, with two distinct regimes of stiffness and flexibility identified. This discovery has implications for the creation of machines that can interact with cells or biological material.
The SPRING project aims to develop all-graphene platforms using spins for information processing, potentially enabling faster and power-efficient components.
Scientists at DOE/Ames National Laboratory have found a broad diffraction pattern in high-quality graphene samples, indicating defect-free and uniform layers of atoms. This discovery enables the reliable identification of structurally perfect graphene, a crucial step towards optimizing its properties for various applications.
A new study reveals twisted bilayer graphene can exhibit superconducting and insulating regions, increasing its usefulness for electronic devices. The discovery is a significant advance in the emerging field of Twistronics, enabling the creation of materials with high-temperature superconductivity.
Researchers from ICFO have observed a variety of previously unseen superconducting and correlated states in magic-angle graphene, including an entirely new set of magnetic and topological states. The discovery has led to a record-high superconducting transition temperature above 3 kelvin.
Researchers developed a method to adopt kirigami architectures for graphene-based sensors, achieving strain-insensitivity up to 240% uniaxial strain. The design redistributes stress concentrations, enabling directional mechanical attributes.
The graphene nanomechanical bolometer is the fastest and most sensitive in its class, detecting nearly every color of light at high speeds. It has wide-spread use potential in astronomy, medicine, industrial manufacturing, and more.
Researchers have created a device that controls spin currents using a double layer of graphene on top of tungsten disulphide. The new technique enables the use of spin currents in transistors, which could be more energy-efficient than traditional electronics.
Researchers at the University of Wyoming have developed an automated system to align single-wall carbon nanotubes, producing higher alignment and precise control over filtration flow rate. This breakthrough enables various tech applications, including electronics and optics.
Northwestern University researchers have successfully integrated graphene and borophene into 2D heterostructures, enabling the creation of ultrahigh density devices. The achievement demonstrates a significant step towards creating integrated circuits from these nanomaterials.
Scientists at Aalto University and the University of Vienna create hybrid material combining graphene and single-walled carbon nanotubes, achieving higher conductivity than either component alone. The van der Waals interaction between graphene and nanotubes enhances charge-tunneling, leading to improved electrical properties.
A graphene filter developed by Rice University scientists can capture and sanitize airborne pathogens, including bacteria, fungi, and viruses. The filter uses Joule heating to kill trapped microbes and their toxic byproducts, potentially reducing hospital infections.
Researchers from SUTD discovered a new theory that describes thermionic emission in graphene, improving the accuracy of models used to design devices. The new approach overcomes limitations of existing Dirac cone approximation, enabling universal descriptions of graphene-based devices across different temperatures and energy regimes.
The Graphene Flagship predicts high potential for graphene-enabled batteries, supercapacitors, and sustainable energy generation. Short-term applications include materials sector innovations, while mid-term prospects focus on energy and opto-electronics advancements.
Researchers at Ohio State University have made a discovery that could provide new insights into how superconductors might move energy more efficiently. They found that graphene can become a superconductor when twisted to an angle of around 0.9 degrees, which is less than previously thought.
The integration of graphene and 2D materials with silicon technology promises to overcome current challenges and enhance device component function and performance. This could lead to breakthroughs in computational systems, non-computational applications, such as cameras and sensors, and even push performance gains in memory and data st...
Researchers have successfully grown elongated hexagon-shaped flakes of borophene on a silver substrate, overcoming a major hurdle in its production. The discovery could enable the creation of atom-width conductive wires for nanoelectronics devices.
Researchers found that graphene shares similar mechanical properties with 3D graphite and has a significantly thicker thickness than believed. Graphene's true thickness was determined to be around 0.34 nm, revealing its 3D nature.
Researchers at Georgia Institute of Technology developed platinum-graphene fuel cell catalysts with unprecedented catalytic activity and longevity. The new catalysts outperformed nanoparticle platinum in dissociation energy, suggesting potentially longer-lasting catalytic systems.
Researchers at the University of Groningen have successfully created a two-dimensional spin transistor in graphene, which uses charge-to-spin conversion to generate spin currents. The spin transistor can be switched on and off using an electric field, enabling the creation of all-electrical spin circuits.
A research team has found a way to overcome the limitations of graphene-based molecular devices, creating structures that are both electrically and mechanically stable at room temperature. The breakthrough, published in Nature Nanotechnology, uses a combination of covalent binding and large ۆ-conjugated head groups to achieve stability.
Researchers have developed a new class of flexible and transparent wearable devices that can measure multiple human vital signs, including heart rate, respiration rate, and blood pulse oxygenation. The devices are conformable to the skin, operate battery-free wirelessly, and provide continuous measurements during activity.
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 from Chalmers University of Technology have demonstrated a graphene-based detector that can detect faint cosmic signals with high sensitivity and large bandwidth. The device's low power requirements make it ideal for future space missions, enabling 3D imaging of the universe.