Articles tagged with Graphene
Rice researchers have discovered that tiny wrinkles in graphene can change its electrical properties, providing evidence for flexoelectricity. The findings suggest scientists may be able to control electricity by changing the shape of atomically thin materials.
Researchers have discovered novel quantum phenomena in twisted graphene, including orbital magnetism, quantum anomalous Hall effect, and unconventional superconductivity. The review highlights the flatband electronic structure of magic-angle bilayer graphene, driving complex behaviors like correlated insulators and topological states.
Scientists at the University of Electro-Communications create a method to map dielectric response at the atomic level, revealing diamond's anomalous enhancement. This discovery could lead to the development of efficient electron sources and smaller electronic components.
Researchers developed a new formula for a hydrogel that can be printed in any shape or size, adhering to skin even when sweaty or hairy. The hydrogel also improved durability and electrical conductivity by adding graphene-based nanomaterials, making it a more potent sensor
Researchers at the University of Arizona have demonstrated a new application for graphene nanoribbons, a material that can withstand extreme environments. The team integrated GNRs into semiconductor devices and exposed them to gamma radiation, showing that they can serve as radiation sensors for fusion reactors and in deep space.
Researchers discovered graphene can host multiple superconducting states, some persisting even in the presence of strong magnetic fields. The team found that certain experimental conditions could control the material's properties, leading to a new family of unconventional superconducting states.
Scientists have created a method to apply graphene to metal surfaces using microwave plasmas, showing promise in protecting against corrosion. The technique involves two methods: direct transfer and three-step process, with the latter achieving better results in surface coverage.
Researchers developed a novel graphene plasmon cavity that enables efficient detection of terahertz light, opening the door to advanced biomedical applications and wireless communications. The device achieves a higher photoresponse than conventional systems without encapsulation.
A team of researchers found graphene oxide in the Atotsugawa Fault System, which reduces friction and may explain the rarity of large earthquakes. The unique properties of graphene oxide create lubricating conditions, allowing faults to move slowly and steadily.
Researchers used machine-learning-enhanced molecular simulations to show pristine graphene is intrinsically hydrophobic. Water molecules adopt configurations characteristic of hydrophobic surfaces near graphene, and thicker layers are even more strongly hydrophobic.
The team developed a predictive design strategy for creating nanographenes with multiple strongly coupled spins, offering enhanced resilience to magnetic perturbations. This breakthrough enables new avenues for molecular-scale quantum information technologies and next-generation spintronics.
Researchers have developed a highly sensitive electronic 'skin' using tiny devices that can measure force applied over an area. This technology has the potential to improve prosthetic limbs and robotic manipulation, allowing robots to accurately track hand movements and grasp delicate objects.
Researchers developed a new type of engineered biochar that can deliver oxygen in a controlled and stable way, overcoming limitations of current materials. The phosphate-modified biochar demonstrated strong environmental adaptability, making it suitable for complex natural environments.
Researchers have developed a sub-THz graphene receiver that meets the demands of future 6G technologies, offering multi-gigabit-per-second data rates and near-zero energy consumption. The innovation transforms graphene devices from laboratory detectors into practical building blocks for 6G wireless technology.
Researchers at the University of Manchester found that large-area MoS₂ reduces energy loss in magnetic memory films by altering the film's internal crystal structure. This effect is not confined to laboratory-scale samples and has implications for real, scalable spintronic technologies.
Graphene and diamond hybrids show promising performance in electronic devices, sensors, and machining tests. However, major challenges remain, including producing large-area hybrids with consistent quality and understanding fundamental properties.
Researchers have developed a new algae-based biochar material that breaks down PFOA with remarkable ability. The new material combines advanced nanotechnology with sustainable biomass resources, providing a promising strategy for removing difficult contaminants from water.
Researchers highlight graphene-based technologies for removing microplastics, pharmaceutical residues, and radioactive contaminants. Graphene-based membranes and catalytic degradation offer powerful tools for pollutant removal, with potential for comprehensive treatment systems.
Researchers at Chiba University developed oxygen-functionalized graphene membranes that selectively separate carbon dioxide from methane while maintaining high permeability. The study demonstrates the potential of graphene-based filtration systems for next-generation gas purification, enabling cheaper and cleaner energy production.
Researchers at Columbia University have observed a superfluid transitioning into an insulating phase, exhibiting properties of both liquid-like and solid-like behavior. The finding suggests that the low-temperature phase may be a highly unusual exciton solid, leaving room for further exploration and potential observation of supersolids.
Researchers introduce a novel fabrication technique to create high-resolution, low-resistance graphene electrodes for transparent and flexible devices. The method achieves exceptionally low electrical resistance and high pattern fidelity without etching-induced defects or chemical contamination.
Researchers at Tokyo University of Science demonstrate matter-wave diffraction in a short-lived electron-positron atom, marking a major advancement in fundamental physics. The findings pave the way for new research using positronium and could enable sensitive tests of gravity.
Researchers MacDonald and Jarillo-Herrero's discovery enables the transformation of graphene material's properties, potentially leading to sustainable electricity transmission and new electronic devices. Their work has opened up new frontiers in physics, defining a vast field for developing materials with highly sought-after properties.
Researchers at Boise State University developed a breakthrough e-tattoo that integrates energy harvesting, energy storage, and biometric sensing into a single platform. The e-tattoo uses MXene-coated fibers to harness energy from human motion and store it for low-power applications.
Researchers discovered that water molecules move in a smooth, rolling motion on hexagonal boron nitride (h-BN), whereas on graphene, they experience increased friction. This finding offers insights into designing surfaces that control friction, wetting, and ice formation.
Professor Owen Guy has received the SEMI Academia Impact Award for his outstanding contributions to semiconductor research, innovation, and industry-academia collaboration in Europe. He is Director of Swansea University's Centre for Nanohealth and a member of its Centre for Integrative Semiconductor Materials.
A European research team has achieved electrical control of spin currents in graphene through ferroelectric switching, offering a novel pathway toward energy-efficient spintronic devices. This discovery enables the fabrication of next-generation spin-based logic and memory systems without relying on external magnetic fields.
A glassy metal-organic framework coating accelerates ion desolvation, stripping solvent molecules from lithium ions, while a second layer enables rapid transport into the graphite bulk. This synergistic design results in unprecedented fast-charging performance, with batteries maintaining high capacity and stability.
Researchers have discovered new evidence of unconventional superconductivity in magic-angle twisted tri-layer graphene, a material that exhibits exotic electronic behavior. The team found that the material's superconducting gap looks very different from typical superconductors, suggesting a unique mechanism for its emergence.
A novel laser-induced graphene-based strategy has been demonstrated for direct 'drawing' of highly precise, patterned electromagnetic metasurfaces. The metasurface exhibits excellent switching behavior across various frequency bands, enabling rapid switching between wave transmission and shielding.
Using a new terahertz spectroscopic technique, researchers have revealed that tiny stacks of 2D materials can naturally form cavities, confining light and electrons in even tinier spaces. This discovery could help control quantum phases and ultimately harness them for future quantum technologies.
A Tohoku University research team synthesized a high-purity graphene mesosponge that serves as a stable scaffold for loading polymorphic ruthenium catalysts. The study clearly distinguished between carbon cathode degradation and electrolyte decomposition, revealing the 'weakest link' in Li-O2 batteries.
Researchers have discovered a way to control double-dome superconductivity in twisted trilayer graphene by tuning the material's band structure. The study sheds light on how unconventional superconductivity emerges and can be tuned, opening up possibilities for designing quantum devices.
Researchers have discovered a new way to create graphene with intentional defects, which can improve its performance and functionality. The defects enhance the material's ability to interact with other materials and detect gases, making it suitable for applications in sensors, batteries, and electronics.
Researchers at Kobe University investigated how different manufacturing techniques affect the electronic structure of magnetic tunnel junctions. They found that the surface of ferromagnets is different when insulators are transferred to them compared to growing crystals on insulator flakes. This difference influences device behavior, p...
Researchers directly observe 'Floquet effects' in graphene, paving the way for innovative technology. The study reveals that Floquet engineering works in many materials, enabling targeted control over electronic states.
Researchers at the University of Pennsylvania have discovered a way to synthesize new multi-metal 2D materials by adding up to nine metals into the mix. This finding opens up possibilities for designing materials with precisely controlled properties for diverse applications.
In graphene, electrons behave like a perfect fluid with electrical properties described by a universal quantum number. Researchers discovered this property in exceptionally clean samples of graphene, observing an inverse relationship between electrical and thermal conductivity.
Researchers at Empa successfully attached porphyrins to a graphene nanoribbon, combining magnetism and conductivity in a single system. This coupling opens doors for quantum technology applications, where spin acts as an information carrier.
Researchers transformed commercially available pencil lead into a graphene-based electron beam source, achieving stable and high-quality electron emission. The findings confirm that graphene edges can be easily derived from readily accessible materials and effectively function as high-performance field emission sources.
Researchers have developed a novel method to stimulate and mature human brain organoids using graphene, accelerating disease research and enabling brain-machine interfaces. The approach allows for safe, non-genetic, biocompatible stimulation of neural activity over days to weeks.
Researchers have developed a method to produce mirror-like graphite films with millimeter-sized grains, exceeding previous synthetic graphite's performance. The films demonstrate exceptional mechanical properties, thermal conductivity, and electrical conductivity, opening up new possibilities for high-tech applications.
Researchers at Rice University have demonstrated a strong form of quantum interference between phonons, revealing record levels of interference. The breakthrough could lead to new technologies in sensing, computing, and molecular detection.
Scientists at King's College London have developed an 'interactional fingerprinting' method to characterise graphene oxide (GO) cheaper and quicker than ever before. This new approach allows for a qualitative snapshot of individual samples by mimicking humans' sense of taste and smell, enabling researchers to quickly quality control th...
Researchers at ICFO have created a single photon detection system that can operate in the mid-infrared range at relatively high temperatures. The system uses twisted 2D materials to detect long-wavelength single photons and exhibits bistability, allowing for extreme sensitivity to illumination.
Researchers developed a high-performance graphene accelerometer with ultra-narrow trenches, achieving improved mechanical robustness, electrical performance, and device yield. The design offers a scalable solution for miniaturized acceleration sensing in wearable electronics, medical robotics, and precision instrumentation.
Researchers developed a hybrid approach combining molecular dynamics simulations and Helfrich theory to evaluate bending rigidities of graphene nanosheets with lattice defects. The study reveals insights for designing novel materials with tailored mechanical properties.
Researchers developed a new method for building powerful, compact energy storage devices using thin-film supercapacitors without metal parts. The device can output 200 volts, equivalent to powering 100 LEDs for 30 seconds or a 3-watt bulb for 7 seconds.
Scientists have developed a new method for scanning tunnelling microscopy that enables the investigation of buried interfaces and atomic-scale structures. The technique allows for high-spatial resolution analysis of both surface and subsurface layers, revealing local magnetic properties and stacking sequences.
A study by USP and Sapienza Università di Roma researchers has synthesized fullerenes with up to 190 carbon atoms using an electrochemical route. The process involves natural graphite, ethanol, water, and sodium hydroxide under ambient conditions, paving the way for new organic synthesis and technological applications.
Researchers unveiled a graphene-based chip that films reactions with nanosecond resolution, capturing elusive intermediates in the Morita-Baylis-Hillman reaction. The electric field applied accelerated the reaction, achieving a turnover frequency of 5,000 reactions per second.
Researchers achieved a 2-fold enhancement in NV center coherence time by graphene-diamond hybridization, clarifying the physical mechanism and providing a novel approach to improve nanoscale quantum sensors. This technique leverages mature graphene transfer processes to reduce noise from diamond surfaces.
Scientists from TU Delft have demonstrated quantum spin currents in graphene without external magnetic fields, a crucial step towards spintronics and next-generation technologies. These robust spintronic devices promise advancements in quantum computing and memory devices.
Researchers at Rice University have successfully created a genuine 2D hybrid material called glaphene by chemically integrating graphene and silica. The new material exhibits unique properties, including new electronic and structural behavior, due to the interaction between its layers.
Researchers at Nagoya University developed an interface that creates programmable electric fields to sort graphene oxide without fixed microfluidic devices. The findings allow precise sorting of GO sheets, which can capture pollutants, solvents, and biomolecules based on their size-dependent properties.
Scientists at Tohoku University discovered that chromium selenide transforms into a magnetic material when reduced to atomically thin layers, challenging previous theoretical predictions. The research opens new possibilities for spintronics applications and could lead to faster, smaller, and more efficient electronic components.
A research group led by Francesco Greco transformed marker ink into a graphene-based electrical circuit using a laser beam, creating a new frontier in electronics. The innovation uses simple and low-cost materials to generate innovative applications on any surface.
Researchers have observed the interactions between electrons and a unique atomic vibration in twisted graphene, called a 'phason', for the first time. The Quantum Twisting Microscope has provided unprecedented insight into electron-phonon dynamics, shedding new light on superconductivity and 'strange metallicity'.
Researchers at EPFL developed a scalable technique to create porous graphene membranes selectively filtering CO₂ from gas mixtures. The new approach slashes production costs while improving membrane quality and performance, paving the way for real-world applications.
Researchers developed bacteria-enhanced graphene oxide nanoparticles that effectively destroy tumors through a three-pronged mechanism. The nanocomposites combine chemotherapy, immune activation, and photothermal heating to suppress tumor growth and activate strong immune responses in mice.