Articles tagged with Graphene
A team of researchers has discovered a new form of carbon that exhibits metallic properties, unlike graphene. The material, named Biphenylene network, is made by assembling carbon-containing molecules on an extremely smooth gold surface and has the potential to be used as conducting wires in future carbon-based electronic devices.
Graphene nanoribbons exhibit structural disorder due to missing carbon atoms, known as 'bite' defects. These imperfections degrade electronic device performance but offer promising opportunities for spintronic applications with unique magnetic properties.
Researchers at The University of Hong Kong have created an atomic-scale ion transistor that can selectively transport ions faster than in bulk water. The device achieves this through electrically gated graphene channels, allowing for highly switchable ultrafast ion transport.
A novel graphene nanoribbon sensor has been developed to detect atoms and molecules, utilizing the quantum mechanical tunnelling effect. The sensor's sensitivity is particularly strong when adsorbates accumulate on its surface.
Researchers at Penn State have developed a novel graphene-based physically unclonable function (PUF) that is more energy-efficient and secure against AI attacks than silicon-based devices. The device's unique properties make it resistant to machine learning attacks, adding tamper resistance as another security feature.
Researchers adapted their laser-induced graphene technique to create fine patterns of graphene in photoresist polymers for use in consumer electronics and other applications. The new process allows for the production of high-resolution, micron-scale lines of conductive graphene, comparable to those achieved by more cumbersome processes.
Researchers have experimentally confirmed that magnetic graphene can generate large spin signals and transfer spin information over long distances. This discovery paves the way for the development of ultra-compact 2D spin-logic devices with strong spin-polarization, promising high-speed and energy-saving electronics.
Researchers found that graphene oxide can carry polycyclic aromatic hydrocarbons into zebrafish, exerting sublethal effects and potentially causing malformations and neurotoxicity. Long-term exposure may lead to inhibition of acetylcholinesterase, a key enzyme in nervous system function.
Researchers at Trinity College Dublin have developed a new graphene-based sensing technology using G-Putty material, which is 50 times more sensitive than industry standards. The technology has the potential to transform wearable electronics and medical diagnostic devices, offering tailored sensors for various applications.
Researchers have developed graphene nanoribbons that interact with light at lightning-fast speeds, opening up new possibilities for high-speed telecommunications. The ribbons' performance is further enhanced by tuning their electric field to interact with multiple light energies.
Researchers have successfully demonstrated the coexistence of magnetism and superconductivity in graphene, opening a pathway towards graphene-based topological qubits. This breakthrough finding enables the creation of Yu-Shiba-Rusinov states, which are crucial for achieving topological superconductivity.
A new real-time 3D motion tracking system combines transparent light detectors with advanced neural network methods to enable fast tracking speed, compact hardware, and lower cost compared to existing solutions. The technology has promising applications in automated manufacturing, biomedical imaging, and autonomous driving.
A research team observed hydrogen-bond structure of water molecules on graphene-water interfaces using vibrational sum-frequency generation spectroscopy. They found that as the number of layers increases, graphene becomes increasingly hydrophobic. VSFG spectroscopy provides a detailed picture of interfacial water at the molecular level.
Researchers at the University of Oregon have developed a method to manipulate sound waves in synthetic composite structures known as metamaterials. The discovery uses theoretical and computational analysis of mechanical vibrations of thin elastic plates to dynamically stop and reverse sound pulses.
Researchers at KTH Royal Institute of Technology developed a sustainable technique for producing hydrogel composites to remove pollutants from water. The hydrogels, made from plant cellulose and graphene oxide-like carbon dots, can effectively remove heavy metals, dyes, and other contaminants.
A team of Carnegie Mellon University researchers has developed a novel microelectrode platform using 3D fuzzy graphene to enable richer intracellular recordings of cardiac action potentials. This advancement could revolutionize research on neurodegenerative and cardiac diseases, as well as the development of new therapeutic strategies.
A team of scientists from Bielefeld and Berlin successfully controlled graphene's nonlinearity by applying modest electrical voltages, enabling efficient processing of high-frequency signals. This breakthrough paves the way for using graphene in THz frequency converters, mixers, and modulators.
Scientists at Weizmann Institute of Science and MIT measure electronic entropy in twisted bilayer graphene, revealing giant magnetic entropy. The discovery provides an electronic analogue to the Pomeranchuk effect, where a material can exhibit unusual phase transitions.
Researchers successfully synthesize armchair graphene nanoribbons (AGNRs) on Cu(111) via lateral fusion of poly(para-phenylene). Oxygen introduction reduces temperature required for reaction, opening up new avenues for surface chemistry. This breakthrough could benefit various dehydrogenation reactions in on-surface synthesis.
Researchers at Rice University have developed a process to convert waste rubber tires into graphene, which can strengthen concrete and reduce carbon emissions. The new material has shown significant gains in compressive strength when blended with Portland cement.
Researchers have developed a Sn/reduced graphene oxide catalyst for efficient formic acid synthesis from CO2 through electrochemical reduction. The catalyst achieved a Faradic efficiency of 98% and significantly reduced overpotential, enabling the production of high-purity formic acid.
Researchers have discovered a way to twist material properties by stacking and slightly rotating 2D layers, which significantly influences the material's properties. This phenomenon, known as the Moiré effect, allows for control over phonon vibrations, potentially leading to new applications in materials science.
The UMass Amherst team developed a graphene-based flow sensor that can detect biofluidic flows as low as micrometer per second, enabling minimal changes in blood flow monitoring. The sensor's high sensitivity and stability make it suitable for long-term implantation in small blood vessels.
Researchers discovered a method to modify graphene's shape and properties by exposing it to powerful laser pulses. The process, called optical forging, stiffens the material, increasing its bending stiffness and vibrational frequency. This leads to improved device speed and precision, with record-breaking stiffness achieved.
An interdisciplinary research team at Kiel University has produced a highly conductive hydrogel that retains its elasticity, suitable for medical implants. The innovative production method uses graphene to achieve high electrical conductivity while maintaining the original mechanical properties.
A research team led by Brown University physicists has found that reducing the repulsive force between electrons in magic-angle graphene makes its superconducting state more robust. This discovery provides important insights into the system's behavior and is a significant step towards understanding unconventional superconductivity.
Researchers successfully demonstrated a new methodology for direct near-field optical imaging of acoustic graphene plasmon fields. This strategy will provide a breakthrough for the practical applications of acoustic graphene plasmon platforms in next-generation optoelectronic devices.
Researchers have successfully created borophane, a stable form of atomically thin boron, which exhibits strength, flexibility and electronics properties. This breakthrough enables the exploration of its real-world applications in fields like batteries, electronics and quantum computing.
Researchers found that graphene flakes can temporarily inhibit excitatory synapses, reducing anxiety-related responses in rats. The nanomaterial was injected into the lateral amygdala, a region of the brain associated with stress response, and successfully reversed long-lasting anxiety behaviors.
Researchers at TU Wien found that thin hBN layers cause excessive leakage currents in miniaturised transistors, making it unsuitable as a gate insulator. The study suggests a need to search for alternative insulator materials to revolutionize the semiconductor industry.
Researchers propose a tri-layer mask design that includes a graphene oxide mixture for enhanced anti-bacterial activity. This coating simplifies the number of layers in the design while maintaining high filtration efficiency, making it suitable for reusable N95 masks.
Researchers at HZB have developed a method to control lattice vibrations in graphene, enabling the creation of phononic crystals with tunable properties. This breakthrough paves the way for applications in ultrasensitive sensors and quantum technologies.
Researchers induced artificial magnetic texture in nonmagnetic graphene by pairing it with a magnet, overcoming a long-standing obstacle in the field of spintronics. The findings have potential to revolutionize electronics and enable more powerful semiconductors, quantum computers, and other devices.
Graphene Flagship researchers have developed molecular bridges to overcome defects in transition metal dichalcogenide (TMD) flakes, increasing carrier mobility tenfold. This breakthrough enables the mass production of conductive inks for printed electronic devices, opening up new possibilities for flexible electronics and wearables.
The development of sub-diffraction optical writing overcomes the limitation of diffractive light, enabling a much-improved data density. The technology achieves an estimated storage capacity of 700 TB on a 12-cm optical disk, comparable to 28,000 Blu-ray disks.
Scientists have developed a graphene filter that can extract carbon dioxide from industrial emissions with high efficiency and speed. The filter, which is the thinnest in the world, can separate carbon dioxide from other gases with an efficiency surpassing most current filters.
Researchers developed a way to measure levels of specific carbon nanotubes in plant tissues using programmed thermal analysis. This method can detect small amounts of carbon nanotubes in leaves, stems, and roots, providing crucial insights into their environmental fate and potential human exposure.
Researchers have developed a new measurement standard for graphene analysis, allowing for fast and non-destructive quality control. The technique enables the creation of high-quality graphene products with consistent performance, accelerating large-scale production and industrialization.
Researchers discovered that twisted graphene at a 1.1-degree angle produces superconductivity, allowing for efficient electricity transport without resistance. The magic angle creates a moiré effect, trapping electrons and phonons in domains that enable superconducting properties.
Scientists at DGIST create a method to image wet cell membranes without fixing or drying them, providing detailed information on cellular molecules. The technique uses graphene to protect cells from desiccation and degradation, allowing for up to ten minutes of imaging in ultra-high-vacuum environments.
Researchers have developed a novel method for producing highly efficient X-ray detectors using 3D aerosol jet-printing, enabling improved performance of medical imaging devices. The new detectors utilize perovskites and graphene, resulting in record sensitivity and a four-fold improvement over existing technology.
Researchers have developed a novel graphene-based electro-absorption modulator with improved static and dynamic modulation efficiency. The device operates at high-speeds while maintaining low power consumption, achieving a record-breaking 39GHz bandwidth.
Researchers at the University of Sussex have created the tiniest microchips using graphene and other 2D materials through a process called 'nano-origami'. By crinkling graphene, they demonstrated that it can behave like a transistor, leading to smaller and faster devices.
Physicists have produced kagome graphene, a carbon-nitrogen compound with unusual electrical properties, including semiconducting behavior that can be switched on and off. The material's unique structure and strong electron interactions could lead to the development of sustainable electronic components.
Researchers from Graphene Flagship partners developed a wafer-scale fabrication method for graphene-based photonic devices, enabling automation and paving the way to large-scale production. The technique allows for integration into silicon wafers, offering ultra-broadband communications and ultra-high mobility of carriers.
Researchers from Graphene Flagship report a new method to integrate graphene and 2D materials into semiconductor manufacturing lines, overcoming challenges such as transferring materials between growth substrates. The technique uses standard dielectric material BCB and conventional wafer bonding equipment, enabling high-quality integra...
Researchers create a new platform for valleytronics by combining ferromagnets and twisted graphene layers, enabling the manipulation of electrons' 'valley' property. This opens up a new realm of correlated twisted valleytronics with potential applications in topological quantum computing.
Researchers have discovered a new form of magnetism in magnetic graphene, which could help understand superconductivity. The material's unique properties allow it to remain magnetic even when becoming a conductor under high pressure.
Researchers have successfully created a three-layered graphene structure that exhibits more robust superconductivity at higher temperatures than double-stacked graphene. The system allows for tuning of superconductivity by adjusting an externally applied electric field.
Scientists developed a comb-like etching regulated growth process to fabricate graphene nanoribbon arrays in a template-free CVD system. The approach allows for precisely controlling over width, edge structure, and orientation of graphene nanoribbons with high quality and uniformity.
Scientists have created a highly sensitive graphene-based terahertz detector, outperforming commercial analogs. The device's exceptional sensitivity enables faster data transfer rates, opening up prospects for applications in wireless communications, security systems, and medical diagnostics.
Researchers discover ultra-strongly coupled superconductivity in a trilayer graphene sandwich, exhibiting more robust superconductivity than its bilayer counterpart. The team can tune the material's superconductivity using external electric fields, opening new avenues for quantum information and sensing technologies.
Researchers found a way to process hexagonal boron nitride into high-quality 2D nanosheets using surfactants and water. The findings could lead to the development of antibacterial films and heat-resistant materials.
Researchers at Graphene Flagship partner Fraunhofer ISI predict that graphene will be commercially available for various industrial applications, including batteries, solar panels, electronics, and medical technologies. By 2025, market demand is expected to quadruple, with graphene being incorporated into ubiquitous commodities.
Researchers developed a stable graphene oxide nanofiltration membrane with uniform pore size to remove organic micropollutants. The study proposes combining signal amplification strategy and defect chemistry to reduce membrane pore size distribution, offering a promising method for preparing highly selective NF membranes.
A new desalination membrane was developed by laminating graphene oxide nanosheets on a porous polymer membrane, enabling highly efficient desalination with controlled ion-blocking functionality. The membrane can block around 95% of NaCl ions, making it suitable for producing freshwater from seawater.
Researchers at Brown University have created a new type of graphene nanochannel water filter that can efficiently remove contaminants from liquids. The VAGME membrane technology, developed by Robert Hurt and Muchun Liu, features narrow channels that allow small molecules to pass through while blocking larger ones.
Researchers at KIST achieved a pulsed-laser repetition rate of 57.8 GHz by inserting a graphene resonator into a fiber-optic oscillator. This breakthrough overcomes the MHz-level limit and paves the way for significant increases in data transmission and processing speeds.
Researchers at Tomsk Polytechnic University and the University of Lille developed a new material based on reduced graphene oxide (rGO) that can store 1.7 times more electrical energy, expanding its surface area through organic molecule modification under mild conditions.
Researchers at the University of Tsukuba have developed a method to produce acid-resistant catalysts using graphene, improving hydrogen gas production efficiency. The study shows that few layers of graphene allow protons to penetrate during hydrogen evolution reactions, crucial for maximizing efficiency.