Articles tagged with Graphene
Researchers have developed ultra-thin and flat graphene metalenses that can concentrate terahertz beams to a spot, flip their polarization and modulate their intensity. These devices have the potential to revolutionize applications such as amplitude tunable lenses, lasers and dynamic holography.
Scientists have developed a method to print electronic circuits on fabric using graphene-based inks, creating flexible, washable, and breathable wearable devices. The technology has the potential to revolutionize the textile industry with applications in healthcare, energy harvesting, and fashion.
Researchers discovered a new route to ultra-low-power transistors using graphene-based composite materials, achieving fine electrical control over the electron's spin. The discovery has the potential to lead to much-needed low-energy consumption electronics.
Pillared graphene's thermal transport was found to be faster with wrinkles due to reduced phonon scattering. The optimal configuration involves three octagons instead of six heptagons, facilitating a smoother turn without significantly stressing the graphene.
Researchers at Chalmers University have developed a flexible terahertz detector using graphene transistors on plastic substrates. The device detects signals in the frequency range of 330 to 500 gigahertz, opening up various applications including imaging sensors and wireless communications.
Researchers at the University of Sussex have created a new method for making smart phone touch screens that are cheaper, less brittle, and more environmentally friendly. The breakthrough involves combining silver nanowires with graphene to create a hybrid material that matches existing technologies at a fraction of the cost.
Mahmooda Sultana, a NASA research engineer, has been named IRAD Innovator of the Year for her groundbreaking work on nanomaterials and detectors. She is expanding her research to develop quantum-dot technology and 3-D printed sensor platforms.
Researchers successfully controlled electrons in graphene using a high-tech microscope, paving the way for novel electronic devices. This breakthrough could lead to ultra-fast transport of electrons with low energy loss in applications such as transistors and sensors.
A study reveals that lab researchers should engage with industry counterparts to better understand the needs and challenges of real-world applications. This approach helped researchers adjust their focus and develop a potentially more useful set of applications for their work. By bridging the gap between research and commercialization,...
Researchers at Columbia University have observed the even-denominator fractional quantum Hall state in bilayer graphene, surviving to much higher temperatures than previously thought. This discovery opens the door to new experimental tools and may finally solve the mystery of this phenomenon.
Researchers at Kumamoto University discovered that pressure can be generated by stacking graphene oxide nanosheets and that this pressure increases with heat treatment. The study found a maximum pressure of 38 x 10^6 Pa, which can be adjusted by changing the heat treatment temperature.
Researchers have developed a new method to deposit CuSCN layers on perovskite films, resulting in stabilized power-conversion efficiencies exceeding 20%. The introduction of a thin spacer layer of reduced graphene oxide allows the cells to achieve excellent operational stability, retaining over 95% of their initial efficiency.
Researchers at the University of Illinois Chicago are working on discovering new 2D materials to manufacture improved and cost-effective batteries. The goal is to increase battery efficiency by about 1,000 times, enabling sustainable energy generation, chemical manufacturing, and pollution removal.
Researchers from Finland and Taiwan have successfully fabricated three-dimensional graphene structures using optical forging, a technique that utilizes laser light to shape the material. The resulting graphene objects exhibit unique electronic and optical properties, opening up new possibilities for graphene-based devices.
Researchers from FAU have successfully controlled electronic current in graphene using a single laser pulse within a femtosecond, generating a current that is more than a thousand times faster than the most efficient transistors today. The method uses light waves to regulate electron movement and generate electricity.
Researchers at IBS Institute for Basic Science observed polymers in liquid inside graphene pockets without staining, revealing their dynamic movement. The study paves the way for observing life's building blocks and self-assembly of materials.
Researchers at Chalmers University of Technology found potential technology-based solutions to replace 13 out of 14 scarce metals with carbon nanomaterials. Carbon nanomaterials, such as graphene, have similar properties to metals and can be used in various applications, including electronics and plastics.
Researchers have reported a new type of quantum oscillation in graphene superlattices, observable at high temperature and on the mesoscale. This phenomenon sheds light on Hofstadter's butterfly and enables tuning of electronic materials properties.
Researchers enhanced spider silk with graphene-based materials, boosting its mechanical properties by up to three times the strength and ten times the toughness. The modified silks show promising applications in high-performance or biodegradable textiles such as parachutes or medical dressings.
Researchers have created a terahertz saturable absorber using graphene produced by liquid phase exfoliation, enabling ultrafast lasers with high modulation. The devices have great potential for applications such as time-resolved spectroscopy of gases and molecules, quantum information, and ultra-high speed communication.
Hollow atoms, created in labs, have electrons that can quickly lose energy through interatomic coulomb decay. This effect is important for understanding the helpful effects of ionizing radiation in cancer therapy and causing DNA damage.
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.
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.
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 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.
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.
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.
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.