Articles tagged with Graphene
Researchers developed a method to measure all phonons in graphene nanostructures, opening new possibilities for material design and optimization. This breakthrough technique uses high-resolution electron spectroscopy inside an electron microscope, resolving spatial and momentum vibrations.
Researchers at Rice University have created a method to modify hexagonal-boron nitride (h-BN) by attaching carbon chains, making it easier to bond with polymers and other materials. This modification also makes the material more dispersible in organic solvents.
Researchers studied H2SO4-GIC to monitor stage transitions and observed a difference in mechanisms between natural flake graphite-based and HOPG-based GICs. The findings advance the field of graphene and have potential applications in Li-ion batteries, hydrogen fuel cells, and single-layer graphene production.
University of Illinois researchers discovered that tiny defects formed during fabrication can be used to direct molecules into membrane pores. Their findings could lead to devices that quickly sequence DNA for personalized medicine, increasing capture throughput by several orders of magnitude.
Researchers at KAIST have developed a novel synthesis method for single-crystalline hexagonal graphene quantum dots, which emit stable blue light. The team successfully created homogeneous nucleation of graphene quantum dots through a single-phase reaction.
Researchers from Russia and Japan have developed a new stabilization method for unique 2D copper oxide materials using graphene, allowing them to exhibit stable rectangular atomic structures. This breakthrough has significant implications for the development of spintronics devices, as these materials show promise in this field.
Researchers found that twisted bilayer graphene's moiré pattern creates a state where electrons organize into stripes, leading to robust properties. The discovery provides new evidence for the link between graphene and high-temperature superconductors.
A team of engineers at Lehigh University has successfully created a catalyst that uses sunlight to split water molecules, producing hydrogen. This process is performed at room temperature and under ambient pressure, making it a promising route towards a renewable energy-based economy.
New experiments reveal that magic-angle twisted graphene's superconductivity arises from strong interactions between electrons, yielding insights into the rules governing superconductivity. The discovery provides a fundamentally different mechanism for superconductivity compared to traditional materials.
Researchers at Stanford University have discovered a novel form of magnetism, called orbital ferromagnetism, generated by carefully stacking and rotating honeycomb-shaped carbon lattices. This finding could prove useful for certain applications, such as quantum computing.
In acoustoelectronics, surface acoustic waves generate electric currents with conventional and unconventional components. The Valley Acoustoelectric Effect creates a warping-based current and a Hall current with distinct characteristics.
Researchers developed a graphene device that can switch between superconducting and insulating states, allowing for the study of exotic quantum physics. The device, made of three atomically thin layers of graphene, exhibits unique properties such as high-temperature superconductivity and Mott insulator behavior.
Researchers find that introducing a controlled amount of fluorine enhances the growth rate of 2D materials like graphene, h-BN, and WS2. This allows for faster production of high-quality films, reducing synthesis time by up to 70%. The study demonstrates a promising approach to controlling the growth of 2D materials.
Researchers at Queen Mary University of London will study graphene as a potential replacement for Indium in electronic devices. The project aims to reduce the environmental impact and cost of these devices.
Scientists have developed a method to produce graphene materials using bacteria, overcoming a major hurdle in adopting this revolutionary nanomaterial. The bacterially-produced graphene material retains its amazing properties, making it suitable for innovative technologies such as field-effect transistor biosensors and conductive inks.
Graphene's ability to control infrared and terahertz waves using magnetic fields has been confirmed experimentally, opening up new possibilities for opto-electronics, telecommunications, and medical diagnostics. The research also shows that graphene can be used to observe molecular chirality and search for life on exoplanets.
Researchers at the University of Tsukuba developed a reusable nanostructured graphene system to efficiently remove water from algae biomass, preserving environmental benefits. This innovation increases the yield of eco-friendly biofuels, pharmaceuticals, and fertilizers.
Researchers at Karlsruhe Institute of Technology (KIT) have developed a method to directly synthesize graphene from greenhouse gas carbon dioxide. The process involves a catalytically active metal surface, resulting in a simple one-step conversion. This breakthrough could lead to the production of valuable materials and contribute to r...
Researchers at KAUST have created a biohybrid material that performs well as an electrocatalyst, enabling the production of carbon-free fuels and green-energy applications. The material outperforms expensive metal-based OER catalysts in terms of efficiency and is environmentally friendly.
Researchers at IBS have successfully fabricated a single layer graphene film on large area copper foils with no adlayers, achieving adlayer-free and single crystal graphene. This breakthrough enables the creation of high-performance devices with consistent uniformity in the number of layers over large areas.
Researchers successfully demonstrated resonant absorption of terahertz radiation in commercially available graphene, enabling faster internet and a safe replacement for X-ray body scans. The high electron mobility in graphene makes it a promising material for ultrafast photodetectors.
AIXTRON's Neutron system enables roll-to-roll graphene production under ambient conditions, bringing costs down by two orders of magnitude. The CCS 2D system targets semiconductor applications, offering large-scale production of graphene on insulating wafers.
The Graphene Flagship partners with the European Space Agency and the University of Cambridge to launch a rocket into space, testing the printing of graphene patterns on silicon substrates in zero gravity. The mission aims to validate graphene's self-assembly properties and pave the way for its use in long-term space exploration.
The study reveals the emergence of fractional quantum Hall effect in double-layer graphene, with new states exhibiting excellent agreement with composite fermion model. However, some features remain unexplained, suggesting pairing interaction between composite fermions and potentially hosting non-Abelian wave functions.
Researchers at RMIT University and the National Institute of Technology, Warangal, have developed a novel approach to produce graphene using eucalyptus bark extract. This method is cheaper and more sustainable than current synthesis methods, reducing production costs from $100 per gram to just 50 cents per gram.
Purdue researchers have developed implantable neurostimulation devices with a graphene monolayer to protect platinum microelectrodes from corrosion. This innovation aims to improve the reliability and functionality of these devices, benefiting patients with neurological conditions such as Parkinson's disease and stroke.
Emberion's VIS-SWIR graphene photodetectors combine high sensitivity and low-cost material, enabling detection of organic products and spectral analysis. The product is a result of collaboration between the Graphene Flagship project and commercialization efforts.
Researchers at Osaka University developed a graphene-based biosensor to detect stomach-cancer causing bacteria using microfluidics. The sensor can detect tiny concentrations of bacteria in under 30 minutes, paving the way for faster diagnoses and improved healthcare outcomes.
Researchers from OU physics group discover a novel Mott state in twisted graphene bilayers at the magic angle, characterized by ferromagnetic spin alignment. This phenomenon is unlike conventional Mott insulators and has potential implications for superconductivity.
Researchers have developed a method to fabricate graphene membranes that overcome limitations in scaling up nanoporous graphene membranes. The new membranes show high water permeance and salt separation performance at previously unattainable scales due to the addition of carbon nanotube networks.
Researchers have successfully created a graphene-based topological insulator, which enables the creation of low-dissipation ballistic electrical circuits. This breakthrough builds upon previous work and overcomes challenges related to spin-orbit coupling, a key component necessary for topological insulators.
A new organic semiconductor material, triazine-based graphitic carbon nitride (TGCN), has been synthesized with a band gap of 1.7 electron volts, ideal for optoelectronics applications. The material exhibits high perpendicular conductivity, 65 times greater than planar conductivity.
Scientists at Nagoya Institute of Technology create new test method using UV light to evaluate interface properties of metal and semiconductors. They found that photo-excited electrons can get trapped at the interface, causing behavioral shifts in device performance.
Researchers at Rice University have created a material that generates electricity from movement, enabling the creation of wearable devices powered by human activity. The triboelectric effect is used to harness energy from contact and separation between materials, producing enough power to charge small capacitors.
Researchers have developed a laser technique to permanently stress graphene into having a structure that allows the flow of electric current, opening up its use in next-generation electronics. The technique creates a tunable band gap, allowing scientists and manufacturers to control the material's properties.
Researchers use graphene to improve loop heat pipes, essential for satellites and equipment in space. The Graphene Flagship project aims to integrate these devices into satellites and the international space station in the next few years.
Researchers at Tohoku University have developed a graphene electrocatalyst with improved hydrogen evolution reaction performance by adding nitrogen and phosphorus dopants around well-defined edges of graphene holes. This approach enhances the number of active sites for chemical reactions to occur, leading to better electrolysis outcomes.
Researchers from Moscow Institute of Physics and Technology have synthesized a quasi-2D gold film by using monolayer molybdenum disulfide as an adhesion layer. The resulting ultrathin films conduct electricity well and are useful for flexible and transparent electronics.
Nagoya University researchers have successfully synthesized plumbene, a lead-based 2D material that exhibits the largest spin-orbit interaction among its cousins. The discovery was achieved through epitaxial growth on a palladium substrate, revealing a honeycomb structure with potential applications in topological insulators and quantu...
Researchers at Institute for Basic Science synthesize hBN single crystals of 10*10 cm2 using a new substrate with lower symmetry. The study reveals that the substrate's symmetry affects crystal alignment and provides a general guideline for synthesizing various 2D materials.
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 at MIT and the University of Vienna have developed a new method to manipulate atoms using a highly focused electron beam, enabling precise control over atomic positioning and bonding orientation. This breakthrough could lead to new ways of making quantum computing devices and sensors.
Researchers at the University of Cambridge have developed wearable electronic components that can be directly incorporated into fabrics, enabling flexible circuits, healthcare monitoring, and energy conversion. The devices are based on low-cost, sustainable, and scalable dyeing of polyester fabric using graphene inks.
Researchers have discovered that graphene flakes can selectively and reversibly affect specific neurons in the brain, offering a promising approach for treating conditions like epilepsy. The study's findings suggest that the particles' size is key to their selectivity, with effects observed only at specific synapse sites.
Scientists have created a method to protect graphene and carbon nanotubes (CNTs) from environmental poisoning, preserving their extraordinary properties. The technique uses a protective layer to allow carbon diffusion, enabling controlled growth of these materials.
Researchers at DGIST created a single-layer graphene-based device that can generate and store power, with maximum transparency of 77.4%. The device also features touch-sensing systems and can be self-charged and stored.
Researchers at DGIST developed a graphene-based transmission line with improved electron speed, contributing to faster processing speeds in semiconductor and communication devices. The team increased device concentration inside graphene, reducing resistance and enhancing electrical characteristics.
Researchers at University of Göttingen and Pasadena discovered hydrogen binding to graphene in 10 femtoseconds, forming a transient chemical bond. This reaction creates a bandgap, making graphene a useful semiconductor.
A KAIST research team synthesized a peroxidase-mimicking nanozyme with superior catalytic activity and selectivity, overcoming the limitations of natural enzymes. The nanozymes can accurately detect target materials like hydrogen peroxide and acetylcholine, paving the way for early diagnosis of Alzheimer's disease.
Graphene has been made luminescent by incorporating europium, allowing it to emit visible light from energy. This breakthrough could lead to new uses in biological materials and tissue analysis.
Researchers at Chalmers University of Technology developed a graphene sponge that acts as a free-standing electrode in lithium sulphur batteries, improving their energy density and cycle life. The new design achieves an 85% capacity retention after 350 cycles, reducing instability issues.
Scientists have discovered that graphene can be used to purify water by capturing bacterial cells, making it drinkable. The process involves adding graphene oxide to solutions containing E.coli bacteria, resulting in the formation of flakes that can be easily extracted and reused.
Graphene decoupling with potassium bromide leads to improved electrical properties, closing the gap to pure graphene. This method reduces damage and contamination during transfer, enabling defect-free production.
Researchers have developed a new method to demonstrate liquid-like electron behavior in graphene, allowing for more accurate observation of hydrodynamic flow. This could lead to conduction with reduced energy loss and faster low-power devices.
Researchers at NTNU have created a new electronic component that emits ultraviolet light, replacing traditional fluorescent lamps with a non-toxic and cheaper alternative. The technology has the potential to increase market demand for UVC products by 40% annually.
Researchers from TPU, Germany, and US successfully functionalized 'white graphene' using eco-friendly photopolymerization without altering its properties. The new material was used as a catalyst for splitting water into hydrogen and oxygen, offering a promising alternative to expensive platinum or gold.
Researchers at ICFO have developed a graphene-enabled photodetector that operates at room temperature, is highly sensitive, and very fast. This breakthrough enhances the performance of existing terahertz detectors, paving the way for the creation of fully digital low-cost camera systems.
Scientists at UCL have successfully produced individual 2D phosphorene nanoribbons with unique properties, opening up new avenues for applications in batteries, solar cells, thermoelectric devices, and more. The ribbons' flexibility and scalability make them promising for transforming industries.
Rice University engineers employ neural networks to rapidly model the characteristics of new 2D materials, significantly reducing computational time. The technique enables accurate predictions with minimal data, facilitating bottom-up design and discovery.
Researchers at University of Illinois Chicago found that graphene coating can reduce lithium battery fires by preventing oxygen release from cathode decomposition. The coating showed significant reduction in oxygen release under high heat, maintaining battery performance even after rapid cycling.