Graphene is the core of the tube. Scientists make one-dimensional wires.

One dimension, only length; two-dimensional, is the plane world, only the length and width; three-dimensional, with length, width and height, is a three-dimensional world, and is also the world we see with the naked eye. In the real three-dimensional world, no matter what, it is three-dimensional. However, at present, scientists have used graphene and bismuth elements to make theoretically stable one-dimensional wires.

Graphene is the core of the tube. Scientists make one-dimensional wires.

First, graphene is a hexagonal planar honeycomb film made of a single carbon atom. Since it has only one carbon atom, it can theoretically be called a two-dimensional object. Because it is the thinnest and hardest substance in the world, it can't be cut. Scientists bend it into a tube with a bismuth element in the middle. By reducing the diameter of the graphene tube, the strontium element is gradually extruded into a single atom. The linear structure, although this linear structure is still one-dimensional wide and high, is already a theoretical one-dimensional, so the produced wire is also a "one-dimensional twist".

It is reported that the "one-dimensional squall line" was made by researchers at the University of Cambridge in the United Kingdom. By using carbon nanotubes with a diameter between 0.7 and 1.1 nanometers (nm), the "one-dimensional squall line" is only diameter. One ten thousandth of human hair. Currently, the research results have been published in the American Society of Chemistry Nano (ACS Nano).

Why do you choose the 碲 element as a conductor? The strontium element is an element of an organ. Usually it exhibits a physical behavior as a semiconductor, but in a tightly enclosed space, its physical behavior behaves more like metal, like a wire. By changing the diameter of the carbon nanotubes, scientists can control the physical properties of the crucible.