Two professors at the University of Tokyo, Fujishima Showa and Tokyo Metropolitan University, have successfully developed diamond nanotube materials. Since each thin tube is only a few ten thousandths of a millimeter in diameter, it is named as a diamond nanotube material. It is similar to the graphite nanotube material formed by the combination of atoms in a cylindrical shape, but the atomic arrangement is different. The sample diameter of the sample is 300 nm, the wall thickness is only a few nanometers, and the length is about 10 micrometers. After the ultrafine tubes are bundled, Form a new material. In the process of processing, firstly, the aluminum plate is drilled with micropores, the diameter of which is the outer diameter of the required nanotubes, as a "cast film", immersed in a liquid tank mixed with very fine diamond particles, at this time, inside The ultrasonic wave causes the diamond particles to adhere to the inner wall of the micropores, and then the aluminum plate is moved into the vacuum vessel, and after being treated by the chemical vapor deposition method for artificially synthesizing the diamond, diamond crystals are gradually formed around the particles, and finally formed on the inner wall of the micropores. In the nanotubes, the aluminum plate portion is dissolved by an acid solution such as hydrogen fluoride, and the nanotubes are separated. The crystal of carbon is divided into diamond and graphite, and the diamond material is denser and harder. The detailed performance of the successfully developed nanotube material is still being further analyzed, but it is undoubtedly stronger than graphite nanotubes, and its high-voltage resistance can also be used to produce electrodes that efficiently emit electrons. At present, the flat panel display uses the graphite nanotube material electrode to excite the phosphor to emit light. If the diamond nanotube material is used instead, the luminous efficiency will be obviously improved, and the role of the new generation ultra-thin display screen will play a greater role.
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