US uses nanoparticles to dig the world's smallest tunnel

U.S. uses nanoparticles to dig the smallest tunnel in the world Nano tunnel. This technology makes the organization and reconstruction of nano-level materials become a reality, and has broad application prospects in medicine, battery manufacturing and other fields. Related papers were published in the latest issue of "Nature · Communication". The researchers claim that this tunnel is formed by the nickel nanoparticles heated by hydrogen gas on the graphite sample. The nickel nanoparticles used in the experiment are only a few nanometers in size. As a catalyst, under the heating of hydrogen, it can remove part of the carbon atoms in the graphite, thereby gasifying it into methane. Graphite crystal is a layered structure, composed of multiple layers of carbon atoms. Through capillary force, these nickel nanoparticles will penetrate into the graphite, and at the same time form a nano-level tunnel in the material. The diameter of this tunnel is generally 1 nanometer to 50 nanometers, which is equivalent to one thousandth of the diameter of human hair. In order to verify this tunnel, the researchers used scanning electron microscopy and scanning tunneling microscope to verify the experimental results, which confirmed the feasibility of this technology. This porous graphite structure has application value in many fields. For example, when it is used as an electrode of a lithium battery, the charging time can be controlled by using appropriate materials and pore diameters; in medicine, porous graphite can be used as a drug sustained-release carrier; In the field of sensor and solar cell manufacturing, the technology also has certain application prospects.

Welded Mesh Fencing

Welded Mesh Fencing