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- Physicists discover important new property for graphene
Graphene is composed of a single layer of carbon atoms arranged in hexagons resembling a honeycomb structure Since the material’s discovery, scientists have shown that different configurations of graphene layers can give rise to a variety of important properties
- Physicists measure a key aspect of superconductivity in “magic-angle . . .
This superconductivity makes magic-angle graphene a promising building block for future quantum-computing devices, but exactly how the material superconducts is not well-understood Knowing the material’s superfluid stiffness will help scientists identify the mechanism of superconductivity in magic-angle graphene
- MIT physicists discover a new type of superconductor that’s also a . . .
Graphene twist In everyday conductive materials, electrons flow through in a chaotic scramble, whizzing by each other, and pinging off the material’s atomic latticework Each time an electron scatters off an atom, it has, in essence, met some resistance, and loses some energy as a result, normally in the form of heat
- Electrons become fractions of themselves in graphene, study finds
The researchers fabricated two samples of the hybrid graphene structure by first exfoliating graphene layers from a block of graphite, then using optical tools to identify five-layered flakes in the steplike configuration They then stamped the graphene flake onto an hBN flake and placed a second hBN flake over the graphene structure
- Study: Superconductivity switches on and off in “magic-angle” graphene
The researchers found that magic-angle graphene could exhibit ferromagnetic properties in a way that could be tuned on and off This happened when the graphene sheets were layered between two sheets of boron nitride such that the crystal structure of the graphene was aligned to one of the boron nitride layers
- Insulator or superconductor? Physicists find graphene is both
In studying the electronic properties in graphene, the team began to play around with simple stacks of graphene sheets The researchers created two-sheet superlattices by first exfoliating a single flake of graphene from graphite, then carefully picking up half the flake with a glass slide coated with a sticky polymer and an insulating material
- MIT physicists find unexpected crystals of electrons in an ultrathin . . .
Rhombohedral pentalayer graphene is essentially a special form of pencil lead Pencil lead, or graphite, is composed of graphene, a single layer of carbon atoms arranged in hexagons resembling a honeycomb structure Rhombohedral pentalayer graphene is composed of five layers of graphene stacked in a specific overlapping order
- Researchers design one of the strongest, lightest materials known
Researchers at MIT have fused flakes of graphene into a sponge-like shape, creating one of the strongest lightweight materials, writes James Temperton for Wired Flakes of graphene were compressed using heat and pressure, then 3-D printers were used to create a “strong, stable structure similar to some corals” for stress tests
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