Articles tagged with Graphene
Researchers from Kumamoto University create nanocavities using ovalene molecules on gold electrodes, trapping a single thiol molecule. This breakthrough enables precise molecular design for future electronic devices and sensors.
Scientists at the University of Vienna have successfully measured the migration of carbon atoms on graphene's surface using an indirect method. By heating the material and observing the effect on stability, they determined the energy barrier to be 0.33 electronvolts.
An interdisciplinary team of Northwestern University researchers has developed a new method to determine the fingerprint of neighboring disorder in 2D materials. This method enables a universal curve that characterizes disorder potentials, leading to improved performance in transistors and gas sensors.
Researchers from the University of Arizona suggest that dying stars can forge carbon nanotubes in the envelopes of dust and gas surrounding them. This process involves the spontaneous formation of carbon nanotubes, which are highly structured rod-like molecules consisting of multiple layers of carbon sheets.
Researchers at the University of Utah designed composite materials using moiré patterns, resulting in abrupt transitions between electrical conductor and insulator properties. The study's findings have broad potential technological applications and demonstrate a new geometry-driven localization transition.
Ohio University researchers have discovered a new carbon solid called amorphous graphite, which can be formed from coal at high temperatures. The material has layers of pentagons and hexagons, reducing its electrical conductivity compared to graphene.
Rice University engineers have developed a novel approach to manipulating the magnetic and electronic properties of 2D materials by stressing them with contoured substrates. The technique, inspired by recent discoveries in twisted 2D materials, allows for unprecedented control over quantum effects.
Researchers turn mixed plastic waste from F-150 trucks into graphene, then reuse it to create enhanced polyurethane foam with increased tensile strength and noise absorption. The circular recycling process has potential to reduce weight and increase fuel economy in the automotive industry.
KAUST researchers have developed a method to manufacture high-performance flexible heaters using graphene domains in nanoscale-thick graphite films. The heaters can reach temperatures of several hundred degrees within seconds when applying a small voltage, and they exhibit excellent stability and cooling rates.
Researchers have developed a new type of separation membrane that can separate hydrogen from methane at speeds 100 times faster than conventional membranes. The graphene-wrapped zeolite membrane achieves a high separation factor of 245, making it suitable for energy-saving separation technologies in various industries.
Researchers have successfully synthesized a new type of carbon allotrope called holey graphyne, which has semiconductor properties and can be used in various applications. The material was created using a bottom-up approach and consists of alternately linked benzene rings and C≡C bonds.
Researchers studied twisted trilayer graphene, discovering a phase diagram that decouples into product states of graphene and bilayer graphene. The system exhibits unique insulating and semi-metallic phases in the presence of an electric field.
Researchers successfully measured the wettability of graphene and other 2D materials using VSFG, a surface-selective tool that connects macroscopic and molecular-level properties. The study found that graphene's 'wetting transparency' diminishes with increasing layers, becoming hydrophobic at a certain point.
Scientists have identified magic-angle twisted bilayer graphene as a promising material for high-temperature superconductivity. Researchers found that nematic order in MATBG originates from the interference between fluctuations of a novel degree-of-freedom combining valley and spin degrees.
A team of researchers from Delft University of Technology has captured the sound of a single bacterium using a graphene membrane. The graphene drum detected tiny oscillations caused by the bacteria's flagella, which can be converted into a 'soundtrack' and listened to. This technology has enormous implications for detecting antibiotic ...
Researchers have developed an eco-friendly and reusable solution for removing toxic synthetic dyes from wastewater using nanocomposite-based hydrogels. The new material, made from carboxymethyl cellulose (CMC) and graphene oxide, demonstrates high adsorption capacities and retains its effectiveness even after multiple cycles of use.
The researchers successfully synthesized π-extended nanographene carbon nanosolenoid (CNS) material with continuous spiral graphene planes, matching the structure of Riemann surface. CNS exhibited special photoluminescence and magnetic properties, including red-shifted emission band and large thermal hysteresis.
Researchers successfully grow high-quality single-crystal graphene sheets on insulating supports using a copper-catalyzed decomposition method. The resulting graphene exhibits excellent electronic performance due to its high crystallinity and minimal surface folds.
Rice University researchers have developed a customizing method for producing doped graphene with tailored structures and electronic states. The doping process adds elements to the 2D carbon matrix, making it suitable for use in nanodevices such as fuel cells and batteries.
Researchers have developed a new method to synthesize large defectless graphene crystals using carbon monoxide under ambient pressure. The process benefits from self-limiting conditions, resulting in purer graphene with faster growth rates and better crystal formation.
A team of scientists has discovered a way to bend electrons without applying a magnetic field by using circular polarized light in bilayer graphene. This breakthrough enables new sensing applications and opens up possibilities for infrared and terahertz sensing, medical imaging, and security applications.
Researchers at Rice University have developed a new type of electronics using undulating graphene, which creates mini channels that produce detectable magnetic fields. This technology has the potential to facilitate nanoscale optical devices and valleytronics applications, such as converging lenses and collimators.
Researchers found that laser-induced reduction of graphene oxide can produce high-quality graphene by reducing defects and improving lattice structure. At high temperatures, oxidation occurs near defects but is balanced by annealing in the center of the sheet, resulting in well-structured material.
A new paradigm in atmospheric gas sensing has been achieved using a graphene sensor integrated with carbon molecular sieve functionality. The sensor demonstrates selective gas detection, including ammonia, at room temperature with a fast response time of seconds.
Researchers have found direct evidence of strong electron correlation in ABC trilayer graphene, a two-dimensional material that can switch between metal, insulator, and superconductor states. The discovery provides insight into the underlying physics driving these switchable materials.
The project aims to find efficient ways to use graphene particles from domestic coal wastes in Fused Deposition Modeling (FDM) 3D printing, increasing the carbon content of filaments and developing new materials. This technology could lead to a more sustainable future by reducing greenhouse gas emissions.
A study by researchers at Pusan National University has investigated the relationship between surface structures and nanoscale friction in multi-layered CVD graphene. They found that only the top-most layer of graphene was twisted with respect to the rest, affecting layer-dependent nanoscale friction.
Researchers have confirmed a novel quantum topological material for ultra-low energy electronics, reducing energy consumption by a factor of four. The study reveals the potential of zigzag-Xene-nanoribbons to make topological transistors with robust edge states and low threshold voltage.
The researchers developed a power suit made of a layered carbon composite material that works as an energy-storing supercapacitor-battery hybrid device. This material could increase an electric car's range by 25% and boost its power, giving it the extra push it needs to go from zero to 60 mph in 3 seconds.
Researchers have demonstrated control of graphene's relaxation time, allowing for novel functionalities in devices such as light detectors and modulators. This work paves the way for the development of ultrafast optical devices with potential applications in photonics and telecommunications.
A team of researchers at NGI and NPL demonstrated that slightly twisted 2D transition metal dichalcogenides (TMDs) display room-temperature ferroelectricity. This characteristic can be used to build multi-functional optoelectronic devices with built-in memory functions on a nanometre length scale.
Researchers have developed wearable sensors that collect data for clinicians while limiting patient discomfort. The sensors use flexible electronics to monitor patients' physical motions and chemical signals in their sweat, skin, and more to help diagnose or inform treatment plans.
A novel graphene-based field effect transistors (FETs) device can detect four different synthetic and natural opioids at once in wastewater. The device uses aptamers to trap opioid metabolites, enabling real-time monitoring with high geographical resolution and low cost.
Researchers have developed a novel approach to detect non-uniformities in 2D materials, enabling the creation of new medical sensors that can detect cancer treatment drugs like doxorubicin. The sensor material combines multiple signals from graphene and molybdenum disulfide to accurately measure analyte concentration.
Researchers at Osaka University have successfully accelerated energetic ions using graphene targets irradiated with ultra-intense lasers, overcoming previous limitations. The findings demonstrate the robustness of graphene in this application and pave the way for compact and efficient plasma-based accelerators.
Researchers at NGI demonstrate improved spin transport characteristics in nanoscale graphene-based electronic devices, achieving up to 130,000cm²/Vs mobility. The study also reveals spin diffusion lengths approaching 20μm, comparable to the best graphene spintronic devices demonstrated to date.
A Korean research team has demonstrated the anisotropic superconductivity of a high-temperature superconductor by stacking twisted pieces of Bi2Sr2CaCu2O8+x using the microcleave-and-stack technique. This study confirms material properties and develops a new fabrication method for nanomaterials.
Rice University scientists have developed a method to extract rare earth elements from fly ash, bauxite residue, and electronic waste using flash Joule heating. This process improves yields and reduces the use of strong acids, making it a more sustainable solution for recycling these materials.
Researchers use scanning tunneling microscopes to visualize electrons in graphene, discovering crystal structures that exhibit spatial periodicity corresponding to quantum superposition. These findings shed light on the complex quantum phases electrons can form due to their interactions.
Scientists from University of Würzburg create custom-made nanographene with cavities to hold smaller PAHs, forming two- and three-layer complexes in solution. They also isolate pairs as solids, leading to promising results for solar cells
Researchers at the University of Bath have developed a novel chemical glucose sensing method based on boronic acids and graphene foam. The new technique can accurately detect lower glucose concentrations than current systems, making it ideal for chronic conditions like diabetes.
Researchers propose that water molecules interact with electrons in the nanotube walls, slowing down flow. Theoretical findings could significantly impact proposed carbon nanotube applications, such as filtering salt from seawater or generating energy.
Scientists at Vienna University of Technology have successfully integrated large surface areas of graphene into limited volumes by producing it on complex branched nanostructures. This breakthrough enables increased storage capacity for hydrogen and higher sensitivity in chemical sensors.
Rice University scientists employ machine-learning techniques to streamline the process of synthesizing graphene from waste through flash Joule heating. The lab used its custom optimization model to improve graphene crystallization from four starting materials over 173 trials.
Researchers at the University of Manchester observed the Schwinger effect using graphene-based devices, producing particle-antiparticle pairs from a vacuum. They also discovered an unusual high-energy process where electrons became superluminous, providing an electric current higher than allowed by general rules.
A KAIST research team has developed graphene-inorganic-hybrid micro-supercapacitors made of leaves using femtosecond direct laser writing lithography. The innovation enables mass production of flexible and green graphene-based electronic devices, reducing waste and environmental issues associated with traditional batteries.
Researchers at Rice University found that iron itself plays a role in its own corrosion when exposed to supercritical CO2 and trace amounts of water. Thin layers of 2D materials like graphene can serve as a barrier to prevent corrosion.
Researchers have successfully synthesized a new 2D material, 2D cuprous iodide, by stabilizing it in a graphene sandwich. The study's lead author notes that understanding the structure was crucial to designing a chemical process for large-scale production.
Researchers have developed a method to analyze audio from graphene production, allowing for near-instantaneous assessment of product type and purity. This approach could improve manufacturing processes, such as flash Joule heating and sintering, by providing real-time data on material properties.
A Korean research team created a DUV LED using hexagonal boron nitride (hBN), emitting strong UV light with low skin penetrability. The new material has higher luminescence efficiency and enables miniaturization, making it suitable for various applications.
A UCF researcher is leading a $1.5 million DARPA project to develop a highly sensitive infrared imaging system that can enhance night vision, space exploration, and healthcare diagnostics. The system will use graphene-based nano-antennas to collect light, enhancing infrared absorption by over 30 times.
A new graphene-based platform allows researchers to control the interaction strength between electrons and holes, enabling the formation of quantum condensates at room temperature. The platform's tunability enables testing of theoretical predictions about superconductivity and its potential for higher temperature limits.
Researchers at JAIST have demonstrated a high thermal rectification ratio on suspended asymmetric graphene nanomesh devices at low temperatures. The device shows promise for developing a high-efficiency thermal rectifier based on graphene nanomesh structure.
Researchers at Brown University discovered that magic-angle graphene becomes a powerful ferromagnet when spin-orbit coupling is introduced. This finding opens up new possibilities for quantum science research and potential applications in computer memory and quantum computing.
Researchers have discovered a new electronic nematic phase in twisted double bilayer graphene, which breaks the material's symmetry and allows for the re-alignment of electrons. This finding adds to our understanding of graphene-based systems and may hold implications for the study of superconductivity.
Researchers at Japan Advanced Institute of Science and Technology developed a graphene sensor that detects electric fields with improved efficiency and reduced size. The mechanism involves the transfer of charges between graphene and traps, allowing for the detection of field polarity and magnitude.
Researchers at Lawrence Berkeley National Laboratory developed a method to stabilize graphene nanoribbons and directly measure their unique magnetic properties. By substituting nitrogen atoms along the zigzag edges, they can discretely tune the local electronic structure without disrupting the magnetic properties.
Researchers have successfully incorporated phosphorene nanoribbons into new types of solar cells, achieving an efficiency above 21%, comparable to traditional silicon-based solar cells. The unique properties of PNRs, including improved hole mobility, enable the creation of high-performance optoelectronic devices.
Researchers developed a method to directly grow high-quality graphene on wafer-scale insulators without transfer, achieving improved electrical performance and carrier mobility. The approach utilizes copper acetate to supply copper clusters, enhancing precursor decomposition and resulting in robust graphene films.
Researchers discovered a graphene-like material called magnetene that exhibits ultra-low friction, contrary to predictions based on Van der Waals forces. Quantum effects play a crucial role in its behavior, making it suitable for use in micro-electro-mechanical systems and implantable devices.