Articles tagged with Graphene
Researchers have found a superlubricity in graphene, where friction vanishes, and hexagonal boron nitride layers are as strong as diamond but more flexible. The unique qualities of these materials could be used to create scratch-proof paint for cars and flexible smart devices.
UConn chemistry professor Doug Adamson has patented a process to exfoliate pure graphene, a substance that is 100 times stronger than steel. His technology uses a thermodynamically driven approach to un-stack graphite into its constituent graphene sheets.
Researchers successfully manipulated graphene's electronic structure to create faster and more reliable transistors. The work guides the use of rare-earth metal ions to modify graphene's band gap, enabling new applications in spintronics.
The Technical University of Munich has optimized graphene growth through chemical vapor deposition (CVD), creating highly pure and stable crystals. The breakthrough allows for mass production of graphene, which can be used in various applications such as electronics, displays, and electrodes.
Researchers successfully grew meter-sized single-crystal graphene on industrial Cu foils, overcoming the challenge of polycrystalline films. The technique improves domain alignment and quality through a temperature-gradient-driving method and oxygen supply.
Researchers at the University of Illinois have developed a new method to manufacture graphene using carbon dioxide, eliminating the need for harsh chemicals and producing a more environmentally friendly process. This breakthrough has significant implications for the production of graphene, a key material in sensors and flexible devices.
Researchers created a device using graphene and boron nitride, achieving unprecedented spin transport efficiency at room temperature. The device showed significant improvements in spin polarization and detection, opening up possibilities for applications such as spin-based logic and transistors.
University of Groningen scientists have developed a graphene-based device that can inject and detect electron spins with unprecedented efficiency, increasing the spin signal by a hundredfold. The discovery has significant implications for the development of spin transistors and spin-based logic.
Researchers have successfully enhanced spider silk's strength and toughness by incorporating carbon nanotubes or graphene. The resulting silk boasts up to three times the strength and ten times the toughness of regular material.
Simulations show that a temperature gradient can displace nanoparticles on graphene membranes, with the force acting like a ballistic wave. Researchers discovered a new phenomenon called thermophoresis ballistic, where vertical thermal oscillations push objects horizontally.
Researchers at Michigan Technological University developed a novel method to convert carbon dioxide into three-dimensional graphene with micropores, greatly enhancing its potential as a supercapacitor material. The new material exhibited ultrahigh areal capacitance and superb cycling stability.
Researchers at Rice University have developed a catalyst that can split water into hydrogen and oxygen, offering a potential solution for renewable energy. The catalyst uses laser-induced graphene, a low-cost material, to produce large bubbles of oxygen and hydrogen simultaneously.
Researchers at Rice University have successfully turned wood into an electrical conductor by creating laser-induced graphene, a form of the atom-thin carbon material. The process involves heating a thin film pattern onto a block of pine using a standard industrial laser, producing high-quality graphene foam bound to the wood surface.
Scientists create user-interactive electronic skin that changes color in response to subtle strain levels, enabling potential uses in robotics, prosthetics, and wearables. Graphene-based flexible electronics make the technology possible with a reduced level of mechanical strain.
Researchers have successfully grown large sheets of monolayer single-crystal graphene, overcoming technical challenges to achieve a 5 x 50 cm2 sheet in just 20 minutes. The low-cost method has the potential to expand graphene's usability and enable its use in flexible circuits.
Researchers at Aalto University developed a chemical method to create graphene nanoribbons with embedded electronic components, including diodes and tunnel barriers. The precision of the structures was achieved through atomic-level control over the chemical reaction process.
Researchers are testing graphene's potential in space applications through two experiments. GrapheneX, a student-led team, will use microgravity conditions to test graphene for light sails, while another experiment investigates how graphene improves efficiency in loop heat pipes, crucial for satellite cooling systems.
Researchers at Lancaster University showcase a new smartphone app that can verify product authenticity using graphene-based digital fingerprints. The technology has the potential to eradicate product counterfeiting and forgery, two of the costliest crimes in the world.
A team of Penn State researchers has created 2D layered devices that can self-assemble at atomistic precision, enabling the production of high-efficiency devices such as flexible electronics and energy storage systems. The devices feature minute spacing between layers, which is crucial for achieving optimal performance.
Researchers have successfully created a room temperature field-effect transistor using graphene's electron spin, enabling the integration of spintronic logic and memory devices. This breakthrough could lead to more versatile devices with reduced power consumption, crucial for future handheld mobile computing.
MIT engineers have developed a functional graphene-based dialysis membrane that filters nanometer-sized molecules at an unprecedented rate. The membrane, made from a single layer of carbon atoms, separates molecules quickly due to its exceptional diffusion properties.
Researchers at Rice University have created a new catalyst for fuel cells that is as effective as platinum but cheaper. The catalyst uses single ruthenium atoms attached to graphene and has shown excellent performance in tests.
Researchers at ICFO have developed a phase modulator using graphene plasmons, enabling ultra-compact light modulation with a device footprint of only 350 nm. The discovery has potential applications for on-chip biosensing and two-dimensional transformation optics.
Scientists develop a simple method to make graphene oxide smart, allowing it to bend in response to changing humidity without external power. They created spider-like crawlers and claw robots that move in response to environmental changes.
Researchers from Rice University and China's Tianjin University have successfully created centimeter-sized objects of atomically thin graphene using 3D laser printing. The new method eliminates the need for high-temperature chemical vapor deposition treatment, enabling mass production of bulk graphene with controlled pore size.
Scientists at the University of Vienna created a hybrid carbon system with graphene sheets enclosing fullerenes. This setup allows for the observation of fullerene diffusion and rotation within the graphene sandwich, providing new insights into molecular dynamics.
Researchers have discovered a new chemical method to incorporate graphene into various applications, maintaining its unique properties. The method allows for the attachment of nanomaterials without distorting graphene's arrangement, enabling integration with other systems.
Researchers at OIST used one-atom-thin graphene film to drastically enhance the quality of electron microscopy images of biological specimens. The low-energy electrons interact strongly with the virus sample but not with the background graphene layer, providing high contrast and resolving tiny details.
Scientists have developed a technique to capture and slow down light, allowing them to observe the quantum nature of electrons in graphene. This breakthrough could lead to new discoveries in superconductors and topological materials.
Andreas Hirsch aims to develop new areas of application for black phosphorus, which could make batteries last longer or enable solar cells to produce more electrical energy. His research may lead to the generation of new fields of application for the substance, including the development of more powerful and efficient batteries.
Researchers from Graphene Flagship have successfully integrated graphene into a CMOS circuit, enabling the creation of high-resolution image sensors that can detect UV, visible, and infrared light. This technology has vast applications in fields such as safety, security, and medical imaging.
A new dynamic hybrid device technology has been discovered, combining semiconducting molecules C60 with layered materials graphene and hBN to create a unique material that revolutionizes smart devices. The material boasts improved physical properties, including stability, electronic compatibility, and lightness.
New ultrathin films with varying properties are being created, falling into five major groups: MXenes, Xenes, organic materials, transition metal dichalcogenides, and nitrides. These materials have flexible, transparent, and tunable properties, and some are electrical conductors or insulators.
Researchers developed a new method to characterize graphene's properties without applying disruptive electrical contacts. By using microwave resonators, they can investigate the material's resistance and quantum capacitance.
Researchers at ICFO have developed a graphene-QD CMOS image sensor that can capture visible and infrared light simultaneously. This breakthrough technology enables applications such as night vision, food inspection, fire control, and environmental monitoring, while also reducing production costs and enabling mass-market production.
Researchers at Lanzalab developed a compact model to describe the functioning of RRAM devices using graphene/h-BN/graphene van der Waals structures. The model accurately predicts the device's behavior and explains dispersion in cycle-to-cycle data, enabling simulation and mass production.
A team led by NIST physicist Joseph A. Stroscio developed a magnetic switch that turns on and off a strange quantum property called the Berry phase. This phenomenon has observable consequences in various quantum systems, including electrons corralled in graphene.
Scientists have discovered that three-dimensional graphene can be tuned to exhibit precise control over its plasmon frequencies through doping, pore size, or molecule attachment. This property may enable the creation of specific chemical sensors and solar cells.
Researchers found that graphene covers weaken adsorption on Pt(111) surfaces, enabling modulation of surface reactions and promoting oxygen reduction reaction activity. This study demonstrates the potential of 2D materials in designing high-performance nanocatalysts.
Researchers discovered laser-induced graphene is highly effective against bacteria and resists biofouling. When electrified, LIG kills bacteria through a combination of contact with its rough surface, electrical charge, and toxicity from hydrogen peroxide production.
A recent study by ICFO researchers found a hybridization effect at high energies that could manipulate vibrational states and engineer hybrid states with mechanical modes. This discovery has the potential to open up new possibilities for manipulating vibrational states, studying collective motion of highly tunable systems.
Rice University scientists discovered that laser-induced graphene can be made either superhydrophobic or superhydrophilic by adjusting the gas used in its formation. This property allows for applications such as separating water from oil and de-icing surfaces.
Researchers have developed a new battery system using electrodes with porous graphene scaffolding, showing substantial improvement in energy storage. By fine-tuning nanopore size, they achieved high mass loading and power capability while maintaining charge transport.
Scientists have developed a method to precisely control graphene's electronic transport properties using in-situ Raman spectroscopy. This technique allows for the creation of tailored graphene-based materials with controlled function, enabling their utilization in the semiconductor industry.
Researchers from the University of Exeter have developed a method to use graphene to generate complex and controllable sound signals, opening up new possibilities for audio-visual technologies. The technique involves heating and cooling graphene using an alternating electric current, generating sound waves without physical movement.
Researchers developed a new process to create graphene from ethene, using higher temperatures than previous methods. The technique could open up new applications for graphene due to its lower cost and simplicity.
Researchers have developed hybrid organic-inorganic materials with fully controllable structural and electronic properties. By using molecular monolayers to create controllable periodic potentials on the surface of graphene, they can tailor the electronic behavior of graphene field-effect transistor devices.
A team led by Professor Lloyd Hollenberg imaged electric currents in graphene using a diamond-based quantum sensor. The technique reveals microscopic behavior of current in quantum computing devices and 2D materials, enabling improved reliability and performance.
Researchers from Oxford's Department of Chemistry experimentally elucidated the melting process of two-dimensional solid hard spheres. The study resolves one of condensed matter science's most fundamental issues and provides the cornerstone for further understanding and development of two-dimensional materials.
The team's detector can pick up just a single charged particle, revealing the intensity of radiation. It could aid in detecting nuclear threats at ports of entry, streamlining radio-medicine, and boosting unmanned radiation monitoring vehicles.
MIT engineers developed a technique using graphene to transfer crystalline patterns onto semiconductor wafers, reducing wafer costs and opening opportunities for exotic materials. The method allows manufacturers to copy and peel off semiconducting layers, reusing the original wafer multiple times.
Researchers developed flexible graphene and gold probes that can detect weak brain signals clearly, improving neural disease treatment and brain-machine interface capabilities. The new probes retain effective surface area despite shrinking size, paving the way for more convenient wireless versions.
The first fully functional microprocessor logic devices based on few-atom-thin layered materials have been demonstrated, enabling flexible and compact electronic devices. The transistors made from molybdenum disulphide (MoS2) can perform 1-bit logic operations and are scalable to multi-bit operations.
A Cornell research group led by Eun-Ah Kim proposes a strategy to create a topological superconductor using transition metal dichalcogenides (TMDs). If successful, this could pave the way for building a powerful quantum computer with approximately six times more qubits than current models.
Iowa State researchers have developed a nanotechnology that uses inkjet printers to print multi-layer graphene circuits, which can be used to differentiate stem cells into Schwann-like cells. The electrical stimulation is effective, differentiating 85% of the stem cells compared to 75% by the standard chemical process.
Researchers at AMBER Centre have fabricated the first printed transistors consisting entirely of 2-dimensional nanomaterials, opening the path for industry to cheaply print electronic devices. The breakthrough could unlock applications such as smart food packaging and labels, and even window panes displaying weather forecasts.
Researchers explore graphene's ability to enhance cyclic stability, flexibility, and power in energy storage applications. Graphene-based hybrids with conductive polymers and metal oxides demonstrate promising results for wearable and flexible devices.
Engineers at MIT have created a method to iron out wrinkles in graphene, producing uniform performance and increasing its electrical conductivity. The technique enables the mass production of single-domain graphene wafer-scale, paving the way for faster electronic devices.
Researchers from the University of Exeter have developed ultrafast flexible memory devices using a hybrid of graphene oxide and titanium oxide. These innovative devices offer low-cost production, eco-friendliness and high capacity, paving the way for flexible electronic applications.
Scientists at ORNL and NCSU report growing graphene nanoribbons without a metal substrate, enabling controlled creation of interfaces with different electronic properties. This breakthrough addresses limitations in graphene's application in digital electronics.