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British scientists invented the flexible touch screen with silver and graphene as raw materials


British scientists invented the flexible touch screen with silver and graphene as raw materials

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Beijing October 30 news, China's touch screen network news, the British scientists invented the cheap flexible touch screen, mobile phone no longer afraid of broken screen. Recently, British scientists invented a cheap flexible touch screen using silver and graphene as raw materials.
Currently, the common touch screens on the market are very brittle, as they are usually made of indium tin oxide and covered with a layer of glass so they can easily be smashed when they fall to the ground.

This indium tin oxide is not only fragile, its preparation is still very difficult, which makes maintenance touch screen costs have been high.
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However, a few days ago scientists at the University of Sussex in the United Kingdom found through research that we could combine graphene, a substance composed of single-layer carbon atoms, with silver nanowires to produce a A screen similar in performance to a conventional display, and the cost of this manufacturing technology is only a fraction of the cost of conventional displays.
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The material is also very pliable at the same time, so it does not require a glass cover, which means that the top layer of the touch screen can be replaced with something more flexible and less prone to breakage, such as plexiglass.
Dr Matthew Large, who led the study at the University of Sussex School of Mathematics and Physics, said: "The reason why the touch screen on your phone is so easily broken is mainly due to the fact that the touch sensor is used The transparent conductive material is indium tin oxide, a material that is very fragile so it needs a hard, glassy surface to protect it. "
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"If your phone is dropped on a hard surface or if you accidentally sit on your cell phone, the broken thing is actually the glass layer." The material we developed did not require a hard glass surface, Because this screen made of a mixture of silver nanowires and graphene is very flexible. "
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"We still need a layer of protection, but it can be something more flexible than glass, so your smartphone's screen will not be so fragile when you accidentally throw it into the ground "
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Although silver is also a rare metal, the difference of metallic indium is that graphene can only be mixed with a small amount of silver to cover the same area. The amount of graphite needed for the preparation of graphene is very rich, so the cost of preparing such a screen can be drastically reduced.
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Scientists have found that they can make graphene atoms floating on the water, pick them up with special tools, and place them on top of silver nanowire films in any way to make the material.
Professor Alan Dalton of the University of Sussex School of Mathematics and Physics said: "By using spray and roller presses, it is easy to scale silver The combination of nanowires and graphene means that fragile cellphone screens will soon be history. "
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"Adding graphene to silver nanowires increases the conductivity of the screen material by as much as 10,000 times."
"This means that with very small doses of silver, we can produce screens of the same or better performance, and screens made of this material respond faster and consume less power."
Dr. Latch concludes by saying: "This paves the way for some of the devices we can bend at a later date." The study is now published in the Journal of the American Chemical Society "Langmuir."





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