Articles tagged with Graphene
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Researchers have pushed single-atom vibrational spectroscopy to the level of chemical bonds, enabling precise measurements of point defects in graphene. The study found unique vibrational modes for two types of silicon point defects, with stronger signals for one defect configuration.
The University of Technology Sydney has developed a brain-computer interface technology that allows users to control devices such as robots and machines using only their thoughts. The technology has been successfully tested in various environments, achieving high accuracy rates of up to 94%. It also has significant potential in fields ...
Researchers developed a machine learning model that maps graphene-gas molecule van der Waals complex bonding evolution for selective gas detection. The model achieved 100% accuracy in distinguishing between different atmospheric environments, showcasing its potential for environmental monitoring and non-invasive medical diagnosis.
Researchers have successfully developed chemically stable, tunable-bandgap 2D nanosheets from perovskite oxynitrides, opening new possibilities for sustainable technologies such as photocatalysis, electrocatalysts, and electronics. The nanosheets exhibit superior proton conductivity and excellent photocatalytic activity.
Researchers have developed a smart contact lens capable of implementing AR-based navigation using a novel electrochromic display technology. The device uses Prussian blue to display directions to the user in real-time, overcame limitations of existing AR devices.
Researchers discover that graphene oxide's surface oxygen content is crucial for its antibacterial activity, with different interaction modes leading to distinct effects. Understanding this relationship can help design safer materials and combat antimicrobial resistance.
Researchers at UC Santa Cruz have discovered that graphene quantum dots can detect magnetic fields at the nano scale with high spatial resolution. The unique properties of graphene electrons, which behave like massless particles, create highly sensitive current loops that respond to external magnetic fields.
Physicists at the University of Wisconsin–Madison directly measured the fluid-like flow of electrons in graphene for the first time at nanometer resolution. This breakthrough study provides new insights into the behavior of electrons in this material, shedding light on its potential applications.
Scientists at Rice University have developed a new technique using the 'flash Joule' method to transform plastic waste into high-value carbon nanotubes and hybrid nanomaterials. This process is more energy-efficient and environmentally friendly than traditional methods, making it a promising solution for recycling plastic waste.
Scientists identify quantum geometry as the key to twisted bilayer graphene's superconducting properties. The discovery reveals that electron movement slows down dramatically near the magic angle, but still allows for electricity conduction.
Researchers at University of Texas at Dallas and Ohio State University identify quantum geometry as primary mechanism for superconductivity in twisted bilayer graphene. This finding paves way for designing new superconductors that can operate at higher temperatures, transforming industries such as energy transport and maglev trains.
Scientists develop two-beam ultrafast laser scribing technology to fabricate ultrafine graphene patterns with sub-diffraction feature size. The technique overcomes the diffraction limit barrier, allowing for precise control over patterned structures.
Researchers at MIT have discovered a way to switch graphene's superconductivity on and off with short electric pulses, opening up new possibilities for ultrafast brain-inspired electronics. This discovery could lead to energy-efficient superconducting transistors for neuromorphic devices.
Researchers have discovered a new form of carbon, LOPC, which consists of 'broken C60 cages' connected by long-range periodicity. The formation of LOPC occurs under specific temperature and carbon/Li3N ratio conditions, and its characterization reveals unique electrical conductivity properties.
Researchers developed peptide-based olfactory receptors on graphene surfaces to detect odor molecules. The new system showed highly selective and sensitive detection of various odor molecules, including limonene, menthol, and methyl salicylate.
Researchers at Japan Advanced Institute of Science and Technology have demonstrated graphene-based NEMS switches with sub-0.5 V switching voltage and excellent switching characteristics. These switches can overcome the stiction issue and dominate in ultra-low power applications.
Georgia Tech researchers developed a new nanoelectronics platform based on graphene, enabling smaller devices, higher speeds, and less heat. The platform may lead to the discovery of a new quasiparticle, potentially exploiting the elusive Majorana fermion.
Researchers at EPFL's School of Basic Sciences created a large-scale, configurable superconducting circuit optomechanical lattice to simulate graphene lattices. The device exhibits non-trivial topological edge states and can be used to study many-body physics.
Researchers have successfully detected terahertz waves with a fast response and high sensitivity at room temperature, using a graphene transistor. The breakthrough could have massive ramifications for spectroscopy, imaging, and future wireless technologies like 6G and 7G.
Researchers created a protective coating of glass, gallium-oxide to reduce vibrations in graphene devices. The oxide improves device performance and provides a new method of protection.
Researchers found that graphene oxide exposure altered the gut microbiome and triggered a type 2 immune response in zebrafish, which could inform strategies to mitigate adverse effects of nanomaterials.
Researchers developed a novel separator using graphene oxide, acetylene black and polypropylene to suppress lithium polysulfide dissolution and improve lithium-ion transportation. The new separator enables efficient Li-S batteries with better performance and stability.
Graphene structures exhibit unexpected speed-dependent friction when moved across a platinum surface, affecting the mechanical properties of the material. The frictional forces increase with the speed of the AFM tip due to elastic deformation at the ridges of Moiré superstructures.
Researchers at UT Austin developed a graphene-based e-tattoo that tracks electrodermal activity on the palm, enabling unobstructive ambulatory sensing. This technology reduces social stigma and provides accurate readings, addressing limitations of current bulky devices.
Researchers at KAUST have developed a soft and flexible electronic 'e-skin' that can detect minute temperature differences between inhalation and exhalation, as well as touch and body motion. The material's island-bridge atomic structure provides an inherent softness and flexibility ideal for on-skin applications.
Materials like graphene can withstand charged ions, while others form nano-sized pores when hit. The researchers developed a model to predict this behavior, which could be used to create tailored membranes with specific nanopores.
Researchers at Rice University have successfully converted asphaltene, a byproduct of crude oil production, into turbostratic graphene using flash Joule heating. This process utilizes the existing material to create useful graphene for thermal, anti-corrosion and 3D-printing applications.
Researchers develop Janus Bi, a platform for creating highly asymmetrical nano-architectures with 2D materials, inspired by nature's efficient light transformation processes. The project aims to produce scalable nanotechnological objects with light conversion capabilities.
Researchers at UNIST have developed a method to synthesize single-crystalline graphite films of up to inch scale, overcoming the critical issue of small size due to weak interaction between layers. The resulting films exhibit exceptional thermal conductivity and uniform quality.
Researchers at MIT and the University of Tokyo have developed a technique to synthesize many
Researchers at Seoul National University have developed a biodegradable and eco-friendly sensor that can detect food temperature and freshness. The sensor, made from laser-induced graphene on commercial paper, enables real-time monitoring of food spoilage and can be used in various industrial fields.
Researchers have fabricated 2D Mn3O4 nanosheets with dominant (101) crystal planes on graphene as efficient oxygen catalysts for Li-O2 batteries. The catalysts achieved ultrahigh capacity and long-term stability, outperforming most Mn-based oxides.
Researchers propose a new design for highly-active anode catalysts in direct methanol fuel cells using ultrafine Rh nanoparticles anchored on 3D graphene-zeolitic imidazole frameworks. The hybrid architectures enhance electrochemical performance and activate synergistic catalytic effects.
Researchers at KAUST have developed ultrathin polymer-based ordered membranes that simultaneously exhibit high water flux and high salt rejection. The membranes display excellent performance in both forward and reverse osmosis configurations, surpassing those containing advanced materials like carbon nanotubes and graphene.
An international team developed two methods to protect and deprotect graphene nanoribbons from atmospheric oxidation, enabling scalable applications of their unique characteristics. The new strategy allows for the integration of carbon nanostructures into devices.
The University of Arkansas has been awarded $699,604 by NIST to enhance a Wi-Fi nano-biosensor for palm-sized SARS-COV-II detection. The new sensor will confirm whether the coronavirus is alive or dead, significantly improving detection accuracy.
The Graphene Flagship is showcasing the potential of graphene-enabled alternatives to traditional semiconductors, with recent advancements in integrating 2D materials into silicon wafers. The project's European Chip Act aims to mobilize €43 billion in investments to alleviate the global chip shortage.
Researchers have demonstrated a prominent superconducting diode effect in a single two-dimensional superconductor using graphene. This breakthrough has significant implications for the study of complex physical behavior in twisted tri-layer graphene and could form the basis for ultra-efficient lossless quantum electronic devices.
Scientists have analyzed the interaction between highly charged ions and graphene at a femtosecond scale, revealing complex processes involved in material response. The study provides fundamental new insights into how matter reacts to short and intense radiation exposure.
An international research team led by the University of Göttingen has discovered unexpected quantum effects in naturally occurring double-layer graphene. The study reveals a variety of complex quantum phases emerging at temperatures near absolute zero, including magnetic behavior without external influence.
Researchers at the University of Connecticut have developed a potential breakthrough treatment for rotator cuff tears, using an advanced polymer to stimulate regeneration of both the tendon and muscle. This approach addresses the real problem of muscle degeneration and fat accumulation that often leads to re-injury after surgery.
Researchers at the University of Texas at Austin developed synaptic transistors using graphene that mimic brain synapses, enabling devices to learn on the fly and improve performance over time. The new material is also biocompatible, paving the way for potential medical applications.
Rice University researchers create a technique to make surfaces superhydrophobic by combining sanding with powder materials, resulting in water-repelling properties. The treatment also exhibits excellent anti-icing properties, slowing down freezing and reducing ice adhesion strength.
Researchers developed a novel composite material of COF and graphene that shows high and rapid adsorption capacity for organic pollutants. The material, consisting of a nanoporous, ultrathin covalent organic framework (COF) anchored on graphene, can filter out organic dyes from water efficiently.
Researchers at the University of Manchester captured images of single atoms 'swimming' in liquid for the first time, revealing how liquid affects atomic behavior. The discovery could have widespread impact on green technologies like hydrogen production and clean water generation.
Researchers found that buckyballs on gold do not exhibit unique Dirac cone behavior as previously thought, contrary to previous study suggestions. Instead, the electrons behave in a parabolic relationship between momentum and energy.
New research by UMass Amherst professor Jinglei Ping demonstrates the use of graphene for electrokinetic biosample processing and analysis, allowing for faster and more efficient detection of biomolecules. This breakthrough enables the creation of smaller lab-on-a-chip devices with improved time and size efficiencies.
Researchers developed a novel graphene-based NiSe2 nanocrystalline array that significantly enhances the efficiency of hydrogen evolution reactions. The composite material achieves an overpotential of 158 mV and exhibits extremely stable performance, providing a promising approach for the development of high-efficiency electrocatalysts.
Rice chemists adapt flashing process to synthesize pure boron nitride and boron carbon nitride flakes with varying degrees of carbon. The flakes show promise as an effective anticorrosive coating, protecting copper surfaces up to 92% better than traditional compounds.
Researchers have designed an energy-efficient silicon-based non-volatile switch that manipulates light to control information flow in data centers. This technology reduces energy needs by 70-fold compared to traditional switches, making data centers more environmentally friendly.
Researchers observe a significant increase in electrical conductivity when mica is thinned down to few molecular layers, exhibiting semiconductor-like behavior. The findings suggest that thin mica flakes have the potential to be used in two-dimensional electronic devices with exceptional stability and durability.
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.