Strained graphene for 25000 Tesla fields for table top free electron lasers and valleytronics

Researchers are making progress to tuning and creating strained graphene where they want. This could lead to valleytronics and ultratiny free electron lasers and other applications. Strained graphene can create pseudo magnetic fields of 25,000 tesla. This is about 1000 times more than the magnetic fields from superconducting magnets. Electronics and spintronics have their strengths …

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Graphene confines light to one atom to enable ultra small optical switches, detectors and sensors

Researchers have been able to confine light down to a space one atom, the smallest possible. This will pave the way to ultra-small optical switches, detectors and sensors. Light can function as an ultra-fast communication channel, for example between different sections of a computer chip, but it can also be used for ultra-sensitive sensors or …

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Towards large-scale microchips with graphene

The union of graphene with semiconductors and dielectric insulators allows the development of electronic circuits. European scientists, taking part in the 2Dfun project, have found innovative ways to manufacture this triple layered product on an industrial scale. Beyond graphene, there are other two-dimensional materials with interesting properties, such as the transition metal dichalcogenides (TMD), whose …

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Graphene in shoes for more comfort and heat regulation

The ability of graphene to add functionality to common objects has been exploited in a new product on the market: footwear with better thermal properties. Developed by Graphene Flagship partners Istituto Italiano di Tecnologia, Italy, in collaboration with FADEL, a leading Italian shoe company based in Tuscany, the new GET® technology, patented by FADEL, gives …

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Graphene reinforced concrete is twice as strong and four times more water resistant

Experts from the University of Exeter have developed a pioneering new technique that uses nanoengineering technology to incorporate graphene into traditional concrete production. The new composite material, which is more than twice as strong and four times more water resistant than existing concretes, can be used directly by the construction industry on building sites. All …

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Roll-to-roll chemical vapor deposition system makes long sheets of high quality graphene

MIT has combined a roll-to-roll approach — a common industrial approach for continuous processing of thin foils — with the common graphene-fabrication technique of chemical vapor deposition, to manufacture high-quality graphene in large quantities and at a high rate. The system consists of two spools, connected by a conveyor belt that runs through a small …

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Graphene superlattices could be used for superconducting transistors

Researchers created a “superlattice” of two graphene sheets stacked together — not precisely on top of each other, but rotated ever so slightly, at a “magic angle” of 1.1 degrees. The hexagonal honeycomb pattern is offset slightly, creating a precise moiré configuration that is predicted to induce strange, “strongly correlated interactions” between the electrons in …

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Crumpled Graphene balls makes better batteries

•Crumpled graphene particles can readily assemble to yield a scaffold •The scaffold can stabilize scalable Li loading within tolerable volume fluctuation •High Coulombic efficiency and plating/stripping capacity were achieved Context and Scale With its high theoretical capacity and low electrochemical potential, Li would be the ideal anode for Li-ion batteries. However, practical use of the …

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Graphene Nanoribbons are 100 times brighter than previous single molecule devices

Researchers observed a bright and narrow band emission of red light from individual graphene nanoribbons, only 7-atom-wide, at a high intensity comparable to bright light-emitting devices made from carbon nanotubes. Optical emission was up to 10 million photons per second, about 100 times more intense than the emission measured for previous single-molecular optoelectronic devices. The …

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Battery-free wireless RFID sensor from graphene oxide for Internet of Things Applications

Researchers have a design that layers graphene oxide, to create flexible heterostructure humidity sensors for remote sensing. * layer by layer printing allows for scalable and mass production at a very low cost. * the first printable technology where several 2D materials combine to create a functional device immediately suitable for industrial applications. * No …

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Super aluminum-graphene battery has a 5-second charging time

Material and engineering researchers at East China’s Zhejiang University unveiled a “super” aluminum-graphene battery that can be fully charged in 5 seconds and then last for two hours. They claim to have developed a novel aluminum-graphene battery that is more cold-resistant, can work in temperatures ranging from -40 C to 120 C and is less …

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