graphene造句

The researchers extracted graphene from graphite using ordinary adhesive tape.

In other words, you can do transformation optics using graphene.

Until now, these graphene nanoribbons were made using top-down approaches, such as "cutting" the ribbons from larger graphene sheets or "unzipping" carbon nanotubes.

Apart from stiffness, graphene is possibly better known as a potential silicon replacement.

The technique is precise, which means that the rest of the graphene oxide sample remains insulating.

Layers of graphene make up the graphite found in pencil lead.

In situ synthesis of graphene oxide and its composites with iron oxide

But cool this graphene down to near absolute zero and something extraordinary happens: the electrons speed up dramatically.

They create a series of pores ranging from 5 to 25 nm in diameter by placing flakes of graphene over a silicon nitride membrane and drilling nanosized holes in the graphene using an electron beam.

The ribbons also have smooth edges, something that is crucial for making electronic devices out of graphene.

In this case, a carbon nanotube is basically a rolled up sheet of graphene the size of a DNA molecule.

Results showed that the graphene with characteristics of disorder crystal and large length to thickness was prepared by oxidation reduction.

As graphene is too thin, its effective detection area is small. Thus, it is weak in terms of light absorption and slow in terms of response.

The new technique involves "writing" electrically conducting nanowires onto graphene oxide using a tiny heated tip and could be ideal for making flexible electronic devices.

The team is now busy working on improving the performance of the transistors by optimizing device structure, graphene quality and the gate dielectric.

Fasel and colleagues have already shown that this technique is viable by connecting three separate graphene ribbons together using two suitable monomers.

When the team examined what they had done under a microscope, they found that the graphene had wrapped itself around the silicon-nitride grains, forming continuous walls.

The boundary between the two areas acts as a wall, capable of reflecting a guided EM wave on the graphene much like one would in a three dimensional space.

Pull apart the soft, grey graphite and you have a flimsy sheet of carbon atoms just one atom thick, called graphene, whose electrons ping around the surface like balls in a pinball machine.

When chemical vapor deposition is used to grow graphene it is normally made up of individually grown sheets that bloom in the outward direction from hot catalysts until they meet each other.

In their initial work, in 2004, they not only demonstrated that they had made graphene, but also elucidated its electrical properties by patterning it and connecting it to electrodes.