Articles tagged with Graphene
Scientists discover magic-angle graphene can behave like an insulator or a superconductor at the same time, sparking new research on the material's physics. The study reveals that the insulating and superconducting phases may compete with each other, rather than being directly related.
Researchers developed a graphene-based ultrathin lens that can be electrically tuned to adjust focusing and eliminate chromatic aberration. The device features high transmittance, high resolution, and multifunctional capabilities for various display applications.
Scientists successfully synthesized a 17-carbon wide graphene nanoribbon with the smallest bandgap seen to date among known graphene nanoribbons. This breakthrough has significant implications for the development of new electronic devices.
Graphene sensors printed with aerosol jet technology can detect histamine in tuna broth down to 3.41 parts per million, exceeding US FDA guidelines for food safety. The technology also has potential applications in environmental toxin detection, wearable health monitoring, and disease diagnostics.
Researchers at MLU, UT, and ORNL have successfully produced graphene nanoribbons directly on semiconductor surfaces, overcoming previous limitations. This breakthrough enables customization of the material's properties, paving the way for potential applications in storage technology, semiconductor industry, and quantum computing.
Researchers have developed a new technique using V-shaped graphene-metal film structures to study the properties of individual organic molecules and nanolayers. The approach relies on plasmon localization, which enables the team to focus on the sample and register a response from several molecules or even a single large molecule like DNA.
Scientists at The University of Manchester have developed an energy-efficient and highly versatile membrane coating using chemically modified molybdenum disulphide, offering a game-changer for the water filtration sector.
Researchers discovered a high-energy parent state with unusual symmetry breaking in magic-angle twisted bilayer graphene, leading to the revival of Dirac electrons. The system exhibits asymmetric electronic compressibility and phase transitions near integer fillings.
A team of Brown University researchers has developed a new ceramic material that doubles the toughness of traditional solid-state lithium ion batteries. The material combines graphene and ceramic to improve mechanical properties while maintaining electrical functionality.
Researchers from The University of Manchester created a prototype garment that can lower the body temperature in hot climates using graphene's remarkable thermal properties. The technology also opens up new possibilities for interactive infrared displays and covert communication on textile.
Researchers synthesized BP-structured nitrogen using diamond anvil cell apparatus and high-power laser heating. The new material exhibits colossal Raman intensity and unusual optical properties.
Researchers at Japan Advanced Institute of Science and Technology have successfully measured the current-voltage curve of graphene nanoribbons suspended between two electrodes. The study reveals that a critical bias voltage triggers an abrupt change in electrical conductance for zigzag GNRs, opening new possibilities for switching devi...
Monash researchers have successfully applied 'magic angle' twistronics to control the flow of light in extreme ways. By stacking two thin sheets of molybdenum-trioxide and rotating one layer, they observed controllable light waves over a wide range of wavelengths, enabling robust light propagation in tightly focused beams.
Researchers at ICFO have successfully built a new type of cavity for graphene plasmons, enabling the confinement of light in the smallest volume ever achieved. This breakthrough has promising implications for molecular and biological sensing technologies.
A team at Princeton University has detected signatures of a cascade of energy transitions in magic-angle twisted bilayer graphene, which could help explain how superconductivity arises in this material. The researchers found that the addition of each electron caused a jump in the amount of energy needed to add another one.
Researchers developed an aerosol-jet printed graphene sensor to detect histamines in food with high sensitivity and rapid response time. The sensor showed a quick response time of 33 minutes without pre-labelling, reducing the need for laboratory testing.
Scientists at Linköping University develop a graphene-based photoelectrode that converts carbon dioxide to methane, carbon monoxide, or formic acid using solar energy. The technique could contribute to renewable energy development and reduce fossil fuel combustion's environmental impact.
Researchers have made significant advancements in graphene spintronics, enabling the efficient creation, transport, and detection of spin information. This field holds promise for applications in quantum computation, space communication, and high-speed radio links.
Researchers at Carnegie Mellon University develop a novel material called NT-3DFG, which enables remote optical stimulation of neurons without genetic modification or cellular stress. This breakthrough has significant implications for understanding cell interactions and developing new therapies that harness the human body's own cells.
Scientists successfully created large-area periodic micro/nanoripple structures on a silicon substrate using femtosecond laser plasmonic lithography, retaining the properties of the graphene material. The process enables enhanced light absorption and photoelectric performance.
Researchers found that the orientation and configuration of hexagonal boron nitride on bilayer graphene significantly affect Berry curvature, a stable dissipationless current. Encapsulating bilayer graphene with hBN in phase increases asymmetry and large Berry curvature.
Graphite exhibits stronger interplanar bond strength than previously believed, with an elastic constant of nearly 50 GPa, due to a short-range correlation effect selectively strengthening the potential energy surface. This discovery was made using a new ultrasonic measurement technique on defect-free monocrystalline graphite.
Researchers develop color-changing photonic crystals that can detect light, temperature, strain, and other stimuli, with potential applications in healthcare, food safety, and biometrics. The wearable sensors are low-cost, flexible, and robust.
Researchers at KAIST have developed a graphene-based active spintronic component that efficiently generates, controls, and detects spin currents. By stacking graphene on top of 2H-TaS2, they increased the spin-orbit coupling of graphene, paving the way for its use in spintronic applications.
Researchers developed a method to create affordable and stronger car materials using graphene-reinforced carbon fibers. The process reduces production cost by up to 67% while increasing strength by 225%. This technology has the potential to improve safety and reduce costs in vehicle production.
A graphene triangular flake, called triangulene, has been found to possess a net magnetic moment and is a graphene nanometer-size magnet. This discovery opens new avenues for using these pure-carbon magnets in technology.
A theoretical study found that defects in graphene can increase charge transfer rates by an order of magnitude, selectively catalyzing electron transfer to certain reagents. This property has great potential for developing efficient electrochemical sensors and electrocatalysts.
Researchers demonstrate laser-propulsion of graphene sails in microgravity, accelerating prototypes up to 1 m/s². The scalable design minimizes sail mass, paving the way for human lifespans to reach other star systems.
Researchers have developed a novel MRI compatible graphene fiber DBS electrode, enabling full activation pattern mapping by simultaneous deep brain stimulation and fMRI. This breakthrough showed a close relationship between fMRI activation and DBS therapeutic improvement in Parkinsonian rat models.
Researchers have developed a graphene-based sensor that can detect biomarkers with high sensitivity, allowing for quick and simple disease diagnosis. The sensor uses the deformation of a single atomic sheet to trap biomarkers, which generates force deforming the graphene into a dome shape.
Scientists have developed a multi-functional graphene-based nanomedicine that targets cancer cells with enhanced anticancer activity. The material, which combines three types of molecules for improved tumor targeting and drug delivery, shows promise for future biomedical applications.
Graphene Flagship researchers successfully produce large and very high-quality crystals of monoisotopic hexagonal boron nitride (hBN) at room temperature using a new methodology. The hBN crystals exhibit exceptional quality, isotopic purity, and scalability for large-scale production.
Researchers at Japan Advanced Institute of Science and Technology have successfully fabricated suspended graphene nanomesh with controlled nanopores. The graphene nanomesh exhibits increased thermal activation energy, enabling new methods for bandgap engineering and potential applications in gas sensing and phonon engineering.
Researchers have developed a technique to flatten graphene sheets, reducing microscopic distortions that scatter electrons. This process increases electron mobility, leading to improved sample quality and potentially faster electronic devices.
Researchers developed photodetectors using graphene layers with varying proportions of black phosphorus and arsenic, achieving lower dark currents and high photosensitivity. These sensors can enhance the performance of infrared telescopes and replace existing detectors, benefiting various scientific and technological applications.
Researchers at Berkeley Lab have developed a technique to produce atomic-scale 3D images of nanoparticles, enabling precise measurement of their atomic positions. They also created an antiferromagnetic switch for computer memory and processing applications, revolutionizing spin-based electronics.
The technique successfully removes even the tiniest contaminants down to the atomic scale, achieving an unprecedented level of cleanliness. The research also explored the origins and mechanisms of recontamination at the nanoscale, revealing surface diffusion and airborne contamination.
The new material exhibits high toughness, excellent electrical conductivity, high ambient stability, and good electromagnetic shielding performance. This innovation has the potential to revolutionize various fields such as electronics and energy storage.
Researchers have developed a new methodology to resolve the 3D structure of individual nanoparticles with atomic-level resolution, six times smaller than the smallest atom. This breakthrough enables scientists to control nanoparticle properties and behavior in various environments.
Scientists at Oak Ridge National Laboratory use focused electron beams to create artificial molecules in graphene, allowing for controlled manipulation of atomic structures. Meanwhile, researchers develop a non-destructive neutron imaging technique to visualize the interior of uranium particles without damaging them.
A new graphene-based actuator swarm can enable programmable 3D deformation, expanding capabilities of smart devices. The swarm integrates SU-8 pattern arrays with GO to achieve active and programmable deformation under moisture actuation.
Researchers at the University of Illinois created a crumpled graphene sensor that detects ultra-low concentrations of disease markers in blood or serum, improving sensitivity ten thousand times over current designs. This breakthrough enables rapid diagnosis and could lead to portable, handheld devices for monitoring various biomarkers.
A Boston College-led team developed a graphene field effect transistor (G-FET) that selectively identifies deadly bacterial species Staphylococcus aureus and antibiotic-resistant Acinetobacter baumannii. The rapid detection platform employs peptides to capture specific bacteria, allowing for fast and accurate diagnosis.
Scientists from Zhejiang University and Southeast University in China proposed a novel silicon-graphene hybrid plasmonic waveguide, achieving high-performance photodetectors beyond 1.55 μm. The graphene absorption efficiencies are as high as 54.3% and 68.6%, with measured responsivities of 30-70 mA/W at 2 μm and 0.4 A/W at 1.55 μm.
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.
Researchers at Berkeley Lab developed a graphene-based transducer that converts electric signals into sound with efficiency and control. The technology has the potential to revolutionize audio products, offering crystal-clear sound quality and improved performance.
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.
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 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.