According to a recent report by the American Physicists Organization Network, Australian scientists reported in the latest issue of the journal Physical Review Letters that they have developed a new type of metal compound with properties similar to glass and used it as a substitute for plastic and carbon nanotubes. Create new field emission electrodes. The field emitter electrode can produce a stable electron beam, which is expected to be used in fields such as consumer electronics and electron microscopes.
Previously, scientists fabricated field emission electrodes by embedding carbon nanotubes and other nanomaterials in plastic. Although these field emission electrodes have a great variety of application potentials, they have many potential applications. For example, the conductivity of plastics is too weak. The thermal stability of plastics is so low that they cannot withstand the large amount of heat generated by long-term operation.
Now, the research team at Monash University in Australia and scientists from the Institute of Process Science and Engineering under the Commonwealth Scientific and Industrial Research Organisation in Australia have developed a new material that has a great potential for application and is easy to manufacture - amorphous blocks Metallic glass (ABM) and used it instead of plastic to produce field emitter electrodes. When these amorphous metal-glass alloys cool, amorphous materials are formed, making them more like glass at every move.
This amorphous metallic glass alloy is made of magnesium, copper and rare earth element gallium, and possesses many plastic-specific characteristics; it can conform to many shapes, can be manufactured in large quantities and can serve as an effective matrix for carbon nanotubes. In addition to having excellent electrical conductivity, this metallic glass also has a very stable thermal property, which means that it retains its shape and durability even when subjected to high temperatures. Scientists said that the above advantages and its excellent electron emission properties make this amorphous glass metal one of the best materials for making electron-emitting devices.
Although other scientists have previously developed other composite materials composed of bulk metallic glass and carbon nanotubes, this is the first time that such a system has been used to manufacture functional devices such as field emission electrodes. Scientists said that this technology can be used to manufacture electron microscopes, microwave and X-ray generation devices, and modern display devices. (Liu Xia)
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