Articles tagged with Graphene
Researchers at Monash University have developed a new strategy for engineering supercapacitors, making them viable for widespread use in renewable energy storage and electric vehicles. The device achieves an unprecedented energy density of 60 Watt-hours per litre, comparable to lead-acid batteries.
Researchers at University of California, Riverside, have received a $360,000 NSF grant to study graphene's thermal properties and develop new approaches for removing heat from electronic devices. The team will investigate the effect of rotation angle on twisted bilayer graphene's thermal conductivity.
Rice University researchers have discovered a novel technique to create sub-10-nanometer graphene nanoribbons by utilizing the meniscus effect of water. This breakthrough enables the formation of long wires only a few nanometers wide, which is crucial for the development of microelectronics devices.
Researchers at Rice University have successfully synthesized graphene nanoribbons on metal from the bottom up, a process that could lead to breakthroughs in electronics and energy storage. The 'onion rings' of graphene were grown using a new method that relies on hydrogen pressure and controlled growth conditions.
Researchers at Boston College and Nagoya University have synthesized the first example of a new form of carbon, grossly warped graphene, which alters its physical, optical and electronic properties. The new material consists of multiple identical pieces of warped graphene with exactly 80 carbon atoms joined together in a network of 26 ...
Researchers have developed a new graphene technique that significantly increases lithium-ion battery storage capacity by combining graphene nanoribbons with tin oxide. The resulting prototype battery retains more than double the capacity of standard graphite anodes after repeated charge-discharge cycles.
Researchers at Brown University have discovered that graphene's sharp corners and jagged protrusions can pierce cell membranes, potentially disrupting normal function. The findings may help minimize the potential toxicity of graphene, a material with numerous commercial applications.
Scientists from the University of Vienna have successfully integrated graphene into metal silicide technology, preserving its unique properties. The new structure shows promising results for applications in semiconductor devices, spintronics, photovoltaics, and thermoelectrics.
Researchers at Rice University developed a new type of carbon fiber with unique properties, achieving '100% knot efficiency' where the fiber is equally likely to break anywhere along its length. The fibers were created by spinning large graphene oxide flakes into fibers, resulting in enhanced strength and flexibility.
Researchers at UNIST developed a scalable method to produce enhanced yet affordable materials for supercapacitors using mesoporous graphene nano-balls. The MGB-based supercapacitor shows excellent capacitance and high performance.
A Danish team of chemists has successfully created the world's smallest transistor using a single layer of graphene, paving the way for more sustainable and efficient electronic devices. The breakthrough uses precise placement of molecules to test their functionality, significantly improving testing efficiency.
Researchers at Aalto University and Utrecht University have successfully created single atom contacts between gold and graphene nanoribbons. This breakthrough demonstrates how to make electrical contacts with single chemical bonds to graphene nanoribbons, enabling the use of graphene nanostructures in future electronic devices.
Researchers at the University of Manchester have created elementary magnetic moments in graphene and controlled their switching. This breakthrough has significant implications for spintronics, enabling active devices with improved performance.
Researchers at Rice University and Oak Ridge National Laboratory have advanced on the goal of two-dimensional electronics by controlling the growth of uniform atomic layers of molybdenum disulfide. The material is a semiconductor, one of three needed to make functioning 2-D electronic components.
Researchers have developed a low-cost metal-free catalyst using edge-halogenated graphene nanoplatelets that shows remarkable electrocatalytic activity for oxygen reduction reaction, higher tolerance to methanol crossover/CO poisoning effects and longer-term stability than platinum-based catalysts.
A recent study by Columbia University researchers reveals that graphene can achieve almost the same strength as its perfect crystalline form, even with defects. The team developed a new process that prevents damage during transfer, leading to surprisingly strong results.
The new graphene sensor can detect broad spectrum light and is suitable for all types of cameras. It uses 10 times less energy and is estimated to be five times cheaper when mass produced.
Scientists at Rice University and Honda Research Institute have created a hybrid material that combines diamonds, nanotubes, and graphene for superior thermal management. The researchers successfully grew vertically aligned carbon nanotubes on diamond using graphene as a middleman, demonstrating its potential as a heat sink.
Researchers at Purdue University have created a new type of transparent electrode that combines graphene and silver nanowires to overcome the drawbacks of traditional materials like indium tin oxide. The hybrid material has a low sheet resistance and remains flexible even when bent, making it suitable for applications such as solar cel...
Researchers at Northwestern University have developed a method to print highly conductive and bendable layers of graphene using inkjet printing. The resulting patterns are 250 times more conductive than previous attempts, paving the way for low-cost, foldable electronics.
Researchers at MIT have discovered a method to engineer graphene with a band gap, necessary for transistors and semiconductor devices. The new technique involves stacking graphene with hexagonal boron nitride, producing a hybrid material with varying electronic characteristics.
Researchers at Rice University found that adding boron to graphene improves its ability to store lithium ions, resulting in a capacity two times larger than graphite. The discovery also enables the material to hold a proper voltage, making it suitable for commercial use.
Researchers confirm Hofstadter butterfly, a rare quantum effect producing a repeating butterfly-shaped energy spectrum, in moiré-patterned graphene. This discovery provides the first direct experimental proof of this fractal pattern, which was predicted by American physicist Douglas Hofstadter in 1976.
Research teams at MagLab break through nearly 40-year barrier, observing a never-before-seen energy pattern in boron nitride and graphene materials. This breakthrough opens a new experimental direction in condensed matter physics and high magnetic field research.
The discovery reveals a fundamental interest in understanding the electronic properties of graphene and its potential applications. The researchers have created multiple clones of Dirac fermions, mimicking massless relativistic particles, and produced an intricate pattern known as the Hofstadter butterfly.
A graphene single-electron pump provides a fast enough electron flow to create a current standard, overcoming the Achilles heel of metallic pumps. This innovation marks a major step forward in using graphene to redefine the ampere.
Researchers have successfully given graphene magnetic properties, opening up new possibilities for the development of graphene-based spintronics. This breakthrough has the potential to transform the electronics industry by adding a new dimension to traditional electronics.
Engineers have fine-tuned the sensitivity of nano-chemical sensor made from insulating base coated with a graphene sheet to detect trace gas molecules. The study's findings open up new possibilities for modulation and control of chemical sensitivity without compromising graphene's intrinsic properties.
The study successfully creates a device that detects humidity and pressure using graphene quantum dots, showcasing improved sensing capabilities. By manipulating the distance between the quantum dots, the researchers increased conductivity by 43-fold, enabling more accurate measurements.
Researchers have developed a new class of ultra-sensitive photovoltaic devices using graphene and transition metal dichalcogenides. The devices can potentially be used as ultrasensitive photodetectors or very efficient solar cells, generating electricity from sunlight absorbed by exposed walls.
Researchers at the University of Manchester have developed a graphene-based transistor with bistable characteristics, which can rapidly switch between two electronic states. This technology has potential applications in medical imaging and security screening, as well as enabling the creation of new architectures for electronic components.
Researchers at the University of Illinois have discovered a new paradigm in epitaxy by growing nanowires on graphene. The self-assembled wires have a unique core-shell structure, which is spontaneous and produces a perfect interface. This finding has significant implications for advanced electronics applications.
Researchers at the University of Exeter developed a new photoelectric device that converts light into electrical signals using graphene and graphExeter. The ultra-lightweight, flexible device has potential applications in photovoltaic textiles, intelligent windows, and smart materials.
Researchers at University of Manchester develop graphene-based membranes with high selectivity for gases and organic liquids, targeting applications in power stations, fuel cells, food packaging, and human disease detection.
Scientists have directly visualized and tracked the movement of silicon atoms in a graphene sheet, revealing a 'dancing' behavior caused by energy transfer from an electron beam. This breakthrough could lead to new approaches for tuning electronic and optical properties in materials.
Researchers found that the seven-atom ring defects at junctions in polycrystalline graphene result in reduced strength due to amplification of tension. This finding is significant for materials scientists using graphene, particularly in composite materials and stretchable electronics.
Researchers at Rice University have developed a new material that accelerates the development of high-power lithium-ion batteries suitable for electric cars. The hybrid ribbons of vanadium oxide and graphene work well for lithium-ion storage, providing both high energy density and significant power density.
Researchers combine the electronic properties of molybdenite and graphene to develop a flash memory prototype that stores data even in absence of electricity. The material offers great potential for efficient data storage due to its unique 'energy band' and high sensitivity to charge.
Researchers from NUS have successfully created a 'superheated' water that can corrode diamonds by attaching a layer of graphene. This novel discovery has wide-ranging industrial applications, including environmentally-friendly degradation of organic wastes and laser-assisted etching of semiconductor or dielectric films.
Berkeley Lab researchers successfully recreated the elusive atomic collapse state in graphene using artificial nuclei, confirming relativistic quantum mechanics predictions. This breakthrough has significant implications for graphene-based electronic devices and future nanotechnology applications.
A team of researchers led by UC Riverside Professor Alexander A. Balandin has solved the long-standing issue of low-frequency electronic 1/f noise in materials and devices. By studying multi-layered graphene samples, they found that the origin of this signal is at the surface of electrical conductors, contrary to previous research.
Researchers at ICFO have discovered that graphene can convert a single photon into multiple excited electrons, generating larger electrical signals. This feature makes graphene an ideal building block for devices relying on converting light into electricity, with potential applications in solar cells and efficient light detection.
Researchers at UCLA have developed a new technique to fabricate micro-scale graphene-based supercapacitors, which can charge and discharge faster than standard batteries. The method uses a DVD burner to create the devices, making them more affordable and scalable.
A new technique has been developed to grow graphene without defects, enabling the creation of larger sheets with aligned flakes and improved electron flow. This breakthrough has significant implications for industrial-scale graphene manufacturing and the development of graphene-based technologies in electronics, energy, and healthcare.
Researchers at Rice University have made progress toward creating 2-D boron through theoretical work that suggests the most practical ways to make the material. The team's results indicate that 2-D boron may conduct electricity better than graphene, a key finding in the field of two-dimensional materials.
Researchers are developing new transparent contact electrodes using materials like graphene and carbon nanostructures, which offer improved conductivity and transparency compared to traditional metal oxides. These new materials have the potential to be combined with conventional solutions or used in entirely new applications.
Rice University scientists develop a technique to combine single-atom-thick graphene and hexagonal boron nitride into sheets with controlled patterns. The new method enables the creation of fully functional devices with circuits on the same scale as current semiconductor fabrication.
Researchers at Duke University developed a method to control the crumpling and unfolding of large-area graphene films, enabling the creation of artificial muscles with unprecedented properties. The controlled crumpling allows for tunable transparency and opacity, as well as contraction and relaxation on demand.
Scientists at CSIRO and RMIT University created a new conductive nano-material, enabling ultra-high electron flow at speeds exceeding industry standards. The breakthrough material was made from layers of molybdenum oxides, adapted from graphene's unique properties.
A new method amplifies signals in graphene oxide-based electrochemical sensors, enabling applications in medicine, chemistry, and engineering. The findings could lead to rapid and sensitive screening of environmental pollutants.
Researchers develop efficient methods for creating nanomaterials and lithium-ion batteries using graphene films grown on copper and nickel foils. Graphene-based battery shows improved performance due to well-defined Bernal Stacking, while tungsten disulfide nanosheets store and release lithium ions through conversion reactions.
Researchers have made significant progress in understanding the behavior of graphene grain boundaries, which scatter electrons and hinder electronic performance. The study suggests that controlling grain boundary orientation could be key to improving graphene's electronic properties.
Researchers have developed a graphene plasmonics device that can detect even trace amounts of substances in minutes, revolutionizing drug testing for athletes and detecting viruses. The breakthrough uses artificial materials with topological darkness to achieve high sensitivity.
The project aims to develop epitaxial graphene for terahertz frequencies, enabling advanced security and health screening technologies. Royal Holloway will collaborate with National Physical Laboratory and University College London to exploit unique graphene technology.
Researchers at Rice University and Moscow State University found that graphene oxide can bind to natural and human-made radionuclides, removing them from liquids. This discovery could be used to clean up contaminated sites like Fukushima nuclear plants, reduce costs of fracking, and revive rare earth metal mining.
The UK government has allocated £21.5 million of public funding to commercialize graphene, a 'super material' with exceptional properties. Researchers at Imperial College London will explore ways to apply graphene in aerospace design, medical technologies, and other high-tech industries.
A team of researchers at Georgia Institute of Technology has developed a low-temperature method to dope graphene films using self-assembled monolayers. This technique allows for the creation of p-n junctions with minimal disruption to the material's lattice structure and significant electron/hole mobility.
Researchers at NASA's Goddard Space Flight Center are developing graphene-based sensors to detect atomic oxygen and other trace elements in the upper atmosphere, as well as structural strains in spacecraft. The sensors could greatly simplify the measurement of atomic oxygen and provide insights into the impact on spacecraft lifetime.
Researchers have successfully formed graphene into useful three-dimensional structures by mirroring the structure of cork, enabling record-breaking strength and elasticity. The breakthrough, published in Nature Communications, has opened up new avenues for investigations of graphene's potential applications.
Recent research at MIT shows that adding a layer of graphene to a surface has little effect on its interaction with liquids, except for extreme cases. The team's findings demonstrate the ability to manipulate wettability while preserving electrical conductivity and optical properties.