After my post this morning about Graphene I now go looking at the science news articles to see this one about the material Chromium-Chloride-Pyrazine. This material is very interesting and has properties that graphene does not.
"The material marks a new type of chemistry, in which we are able to replace various building blocks in the material and thereby modify its physical and chemical properties. This can not be done in graphene. For example, one can't choose to replace half the carbon atoms in graphene with another kind of atoms. Our approach allows designing properties much more accurately than known in other 2D materials," Kasper Steen Pedersen explains.
It's kind of fun to think of the concept of 2D and 3D materials. Most things we see and interact with daily is 3D and has true physical depth, but a 2D material will be only height and width, no depth. Sheets of paper have a very close 2D look but even they have a depth that is easily determined. Single atom thick materials are far harder to determine the thickness of since the ability to see a single atom is reserved for only a few in the world.
While in a 3D material, electrons are able to take any direction, in a 2D material they will be restricted to moving horizontally -- as long as the wavelength of the electron is longer than the thickness of the 2D layer.
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