With the continuous progress of science and technology, the function of smart phones is becoming more and more powerful, but it also brings some other problems, such as fever. But for mobile phone designers and engineers, to solve the problem of heating at the same time, but also take into account the problem of space. A new research from King Abdullah University of science and technology has developed a new heat dissipation graphite film, < / P > < p > it is reported that graphite film has excellent thermal conductivity, which provides the possibility for the thin development of electronic products and is an ideal material for the heat dissipation of electronic equipment. But the production cost is relatively high, it needs to be processed at high temperature up to 3200 ℃, and the thickness of the finished product is also a few microns. < p > < p > researchers at King Abdullah University of science and technology say that using polymers as a source material to make these graphite films is complex and energy-consuming. Therefore, they have developed a cheaper and more efficient heat dissipation graphite film. < / P > < p > scientists use nickel foil as a catalyst to convert hot methane gas into graphite. This process only needs to be completed at 900 ℃, and the graphite film formed on the surface of nickel foil is only 100 nm thick. < / P > < p > researchers call this new material nano thick graphite films (ngfs), which are much thinner than micron thick graphite films currently used. In addition, the nano thick graphite film also brings unprecedented flexibility and firmness, and the production cost is greatly reduced. < / P > < p > it is worth mentioning that the nano thick graphite film also has conductivity, so it can be used in solar cell modules or sensors for detecting nitrogen dioxide gas. Chinese version of K-car: reading a10e design drawing exposure