Scientists in Australia have developed a new type of electronic material that has touch-sensing capabilities and is much thinner than current smartphone screens. This technology may be used in the next generation of mobile devices, and because of its incredible thinness and flexibility, it can be used for mass production using printed roll-to-roll (R2R) processing like printed newspapers.
This breakthrough came from researchers at the Royal Melbourne Institute of Technology. They started with a material called indium tin oxide commonly used in mobile touch screens today. This transparent material has a high electrical conductivity, but has a disadvantage, it is very brittle, so the research team tried to provide better flexibility by greatly reducing its thickness.
Lead researcher Dr. Torben Daeneke said: "We have taken the old material and transformed it from the inside to create a new version that is extremely thin and flexible." "You can bend it, twist it, And it is much cheaper and more efficient than the slow and expensive way we currently make touch screens. "
The researchers achieved this goal through the liquid metal printing process. This involves heating the indium-tin alloy to 200 ° C (392 ° F) to make it liquid, and then rolling it across the entire surface to produce nanosheets. These two-dimensional sheets are made of the same chemicals as conventional indium tin oxide, but have different crystal structures inside and therefore have some unique functions.
Although this material is not only sufficiently flexible, but also more transparent, it will only absorb 0.7% of the light projected on it, while standard conductive glass can absorb 5% to 10% of the light. This means that less power will be consumed, extending battery life by approximately 10%.
For now, the team has used the material to build a working touch screen, but it can be imagined that its value can also be extended to other areas. Advanced touch displays, solar cells and smart windows.
The team is currently exploring business opportunities for the technology, hoping to attract industry partners to bring it to market. The research was published in the journal Nature Electronics.
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