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The seemingly professional name graphene is actually easy to find around us. When writing with a pencil, there are likely to be dozens or even hundreds of layers of graphene in the pencil mark. Single-layer graphene has a thickness of only one carbon atom, which is about one in 200,000 parts of hair. Physicists have always believed that as the thickness of a substance decreases, the temperature at which it turns into a vapor also decreases sharply. When it is reduced to a monolayer, it becomes extremely unstable, and it is concluded that only graphene having a single atom thickness is impossible. Alone. Until 2010, British scientists Geim and Novoselov confirmed that graphene could exist alone by separating graphene from graphite in experiments, and thus won the Nobel Prize in Physics. The organizing committee has highly praised the research of the two people, and believes that this may be as great as Edison's invention of electric lights. What impressed the two people's awards was that they successfully separated the graphene tool, which turned out to be tape paper. Heim and the team members placed the graphite sheets in plastic tape, the folded tape stuck to the sides of the graphite sheets, and the tape was peeled off, and the sheets were also divided into two. By repeating this process, thinner and thinner graphite flakes can be obtained, some of which consist of only one layer of carbon atoms - they make graphene. Of course, the reason people cheer for this achievement is the special properties of graphene and the extremely broad application prospects. Graphene conductivity is as good as copper and its thermal conductivity exceeds that of any material. It is transparent, only 2.3% of the normal incident visible light will be absorbed, and most of the light will pass through; it is dense, even the smallest gas molecules hydrogen atoms can not pass. Therefore, it is an excellent raw material for making soft transparent electrodes and ultra-fast photoelectric sensing devices, and can be applied to manufacturing solar panels and mobile phone touch screens. The University of California uses graphene to develop an optical modem, which is expected to increase the network speed by 10,000 times. The US NANOTEK Instrument Company has developed a new energy storage device that can reduce the charging time from several hours to one minute, and is expected to solve the battery of electric vehicles. Charging issues; South Korean Samsung and Sungkyunkwan University researchers are mainly engaged in the manufacture of flexible touch screens with graphene. According to the MIT Technology Review magazine, Korean researchers created a TV-sized pure graphene on a 63 cm wide flexible transparent glass fiber giant board. This is by far the largest “graph block†of graphene blocks, which they then used to create a flexible touch screen. Due to the excellent flexibility of graphene, perhaps in the future, our smartphones and netbooks can be carried in another way, such as being rolled up on the ears, stuffed in the pockets, or wrapped around the wrist.