British first turned graphene into insulator
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December 15 22:11:50, 2018
According to a report by the American Physicist Network on October 10 (Beijing time), scientists at the University of Manchester in the United Kingdom wrote in "Nature·Physics" that they used two pieces of boron nitrate and two pieces of graphene to assemble a " "Big Mac", this is the first time scientists have turned graphene into an insulator. This "Big Mac" is expected to replace the silicon chip in the computer. Graphene is a two-dimensional crystal which is separated from graphite material and composed of carbon atoms. It has only one layer of carbon atoms and is the thinnest and hardest material to date. Its conductivity and thermal conductivity are superior, far exceeding silicon and Other traditional semiconductor materials. With the deepening of research on graphene, scientists believe that graphene is expected to revolutionize the field of materials science, and in the future it can replace silicon as an electronic component material, which is widely used in many fields such as supercomputers, touch screens and photonic sensors. In this latest study, scientists combine two layers of graphene with two additional layers of boron nitrate to assemble a four-layer sandwich-like substance and name it "Big Mac Burger." The two layers of boron nitrate are not only used to isolate two layers of graphene, but also to show the reaction of graphene completely surrounded by other substances, so that scientists can observe the behavior of graphene without environmental impact for the first time. The lead author of the study, Leonid Ponomarenko of the University of Manchester, said: "The manufacture of this multilayer structure allows us to eliminate the negative effects of the surrounding environment and control the electrical properties of graphene. "This is not possible." He said: "So far, graphene has never been used as an insulator unless it is properly destroyed, but now scientists have turned high-quality graphene into an insulator for the first time." Andre Gamm, a professor at the University of Manchester in the United States who has won the Nobel Prize in 2010, said: "We are always looking for new ways to improve the performance of graphene. The latest graphene coated with boron nitrate can be the future. Graphene electronics provide the best and most advanced platform. Technically, this is very important. It solves the problem of the stability and quality of graphene that scientists have been worried about. These two problems have been hovering around. Using graphene to make a cloud of darkness on the bright future of various electronic devices.†Gamm also explained that now, Just on a smaller level to do this, but the results show that everything associated with the graphene can be expanded. Just last week, the British Chancellor of the Exchequer George Osborne visited the University of Manchester Laboratory on graphene and said that the British government will spend 50 million pounds (about 77.78 million US dollars) to help develop new materials based on this new material. technology.