Editor's note: In materials science, a crystalline film with a thickness of nanometers is usually regarded as two-dimensional, that is, only has a length and width, and the thickness is negligible. It is called a two-dimensional nanomaterial. Australian scientists have developed a new type of two-dimensional nanomaterial made of molybdenum oxide crystals. The thickness of this material is only 11 nanometers. Inside the new material, electrons are rarely scattered due to encountering "roadblocks" and can move smoothly and quickly . With this new material, smaller electronic components and products with faster data transmission speed can be developed, such as tablet computers with performance comparable to desktop computers. Australian scientists have developed a new type of two-dimensional nanomaterials made of molybdenum oxide crystals, which may revolutionize the electronics industry, making the term "nano" no longer a marketing concept and becoming a reality. In materials science, a crystalline film with a thickness of nanometers is usually regarded as two-dimensional, that is, only has a length and width, and the thickness is negligible. It is called a two-dimensional nanomaterial. The newly developed material has a thickness of only 11 nanometers. It has unique properties, and electrons can move at extremely high speeds inside it. Scientists say they are inspired by another wonderful new material, graphene. Graphene is a single-layer carbon atom network, the thinnest material known to mankind, in which electrons can also move at high speed. However, graphene lacks an energy gap, and transistors made with it cannot achieve current switching. The molybdenum oxide material itself has an energy gap. After it is made into a graphene-like sheet, it not only supports high-speed movement of electrons, but also has semiconductor characteristics suitable for manufacturing transistors. Scientists say that inside the new material, electrons are rarely scattered because they encounter "roadblocks" and can move smoothly and quickly. With this new material, smaller electronic components and products with faster data transmission speed can be developed, such as tablet computers with performance comparable to desktop computers. The performance of electronic products depends on the ability of semiconductor integration. In the past few decades, technological progress has greatly reduced the size of transistors and the performance of silicon chips has been improved by thousands of times, bringing about a revolution in information technology. However, due to the nature of the silicon material itself, traditional semiconductor technology has approached its limit. Scientists are actively looking for a new generation of semiconductor core materials. The research team has made nano-scale transistors with new materials. They predict that if accepted by the electronics industry, molybdenum oxide may become a standard material for electronic products within 5 to 7 years. The research was mainly done by scientists from the Commonwealth Scientific and Industrial Research Organization of Australia and Royal Melbourne Institute of Technology. The relevant papers were published in the journal Advanced Materials on the 4th.
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September 15, 2020