As technology advances, smartphones are becoming more powerful, but they also bring other problems, such as fever. But for mobile phone designers and engineers, solving the problem of heating also has to take into account the space problem. A new study from King Abdullah University of Science and Technology has developed a new thermal graphite film that not only perfectly solves the problem of cell phone fever, but also takes up very limited space.
It is reported that graphite film has excellent thermal conductivity, for the thin development of electronic products to provide the possibility, is the ideal material for the cooling of electronic equipment. However, its production costs are relatively high, need to be processed at a high temperature of up to 3200 degrees C, the thickness of the finished product is also a few microns.
Researchers at King Abdullah University of Science and Technology say the method of using polymers as a source material to make these graphite films is complex and energy-intensive. As a result, they developed a cheaper and more effective thermal graphite film.
Scientists use nickel foil as a catalyst to convert hot methane gas into graphite. This process is done at a temperature of only 900 degrees C, and the graphite film formed on the nickel foil surface is only 100 nanometers thick.
The researchers call the new material nano-thick graphite film (NGFs), which is much thinner than the micron-thick graphite film currently in use. In addition, nano-thick graphite film offers unprecedented flexibility and robustness, as well as significantly lower production costs.
It is worth mentioning that nano-thick graphite film is also conductive and can therefore be used in components of solar cells or sensors for detecting nitrogen dioxide gases.