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Understanding the properties and dimensions of graphene is important to understanding new ways of using the extremely fine material that can change the world.
A new study by researchers at Queen Mary University in London says that graphene is both a 3D material and a 2D material.
RELATED: SCIENTISTS FIND NEW QUANTUM STATES BY PACKING TWO GRAPHENE LAYERS
A miracle material & # 39;
Graphene has the highest thermal and electrical conductivity of all materials and is stronger than steel while remaining lightweight, flexible and transparent. No wonder it's often called a "miracle material".
The material has a wide range of uses likely to change the world. These include use as a filter for seawater, a barrier against mosquito nets and a comfortable solution for electrodes in prosthetic appliances.
Compare graphene and graphite
In a new study, published in the journal Letters of physical examination, The researchers asked two key questions: what is the actual thickness of graphene and how much is graphite a material?
To the surprise of scientists, they discovered that 2D graphene, which is a simple and uniform layer of carbon atoms arranged in a honeycomb structure, has several similarities with 3D graphite.
Graphene and graphite share a similar resistance to compression. The thickness of graphene, meanwhile, has been extrapolated by comparing it to graphite.
If the thickness of a graphite block with a thickness of 100 layers is measured, it means that the thickness of a single layer of graphene is equivalent to the thickness of the graphene block divided by 100.
Thus, according to their calculations, the thickness of graphene is 0.34 nm, say the researchers.
2D or non-2D, that is the question
Dr. Yiwei Sun, lead author of the Queen Mary University study in London, said: "Graphene owes its thickness to a set of chemical bonds that protrude above and below the 2D plane of atoms. graphene is really a 3D material, although very thin.
"By applying classical 3D theory, used for about 400 years, to 2D materials such as graphene, known for 15 years, we show that similar arguments apply to other so-called 2D materials, such as as boron nitride and molybdenum disulfide.In this sense, the 2D materials are actually all in 3D. "
Graphene was discovered in 2004 by peeling off graphene flakes using adhesive tape. It is known by many as "the world's first two-dimensional material," because of its extreme fineness and atomic sheet structure.
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