The screen is one of the most vulnerable areas of smartphones. Researchers at the University of Sussex (UK) decided to correct this shortcoming by creating a touch screen from a material based on graphene and silver nanowires. According to the developers, it is highly durable, flexible and less energy consuming.
On most touchscreens, input is provided by an indium tin oxide nanolayer that does not affect the transparency or conductivity of the glass. However, this is an expensive and very fragile material. The new screen, developed by scientists from Sussex, is a combination of silver nanowires with graphene. To join them together, they placed a one-atom-thick graphene film on the surface of the water, and then "stamped" it on top with a layer of silver nanowires. This technology is quite simple and easily scalable. To do this, you can use conventional spray guns or patterned rollers.
According to the researchers, the use of graphene has been shown to reduce the cost of the sensor film.
"Adding graphene to the silver nanowire mesh also improves its conductivity by about 10 times, " says team leader Alan Dalton. "This means we can use less silver and result in more economical screens with the same or better performance."