In Australia, hair is recycled to create flexible Oled screens

Everything is recyclable, even the hair, since researchers from an Australian university have managed to use this material to create Oled screens. To do this, they burn the hair to recover nitrogen and carbon, necessary to make electroluminescent particles. Ultimately, this will also be possible with animal hair.

No longer throw away your cut hair or animal hair! In search of material recycled, researchers at the  Queensland University of Technology (QUT) found that human hair, hair salons can be used to create screens OLED .

For this, they went to a barber in Brisbane, and they asked to recover all the  cut hair . Why ? Because the hair is a source of carbon and nitrogen , which is useful for making electroluminescent particles. For this use, the hair is treated, then burnt at 240 °, and microscopic particles are thus obtained containing carbon and nitrogen. The engineers then transform this material into  carbon nanodots measuring less than 0.01 micron in diameter.

Ideal for small screens

These nanodots are then dispersed through a polymer , to form “nano-islands”, used as an active layer in an Oled plate . Result, when a small voltage is applied, these nanodots glow blue. It’s not particularly bright, the researchers admit, but it should still be useful for very small screens. Not for smartphones or computers and even less for televisions, but rather for passive devices which only display information or which light up according to a state like a safety sensor in a water purification plant.

Prashant Sonar , author of the study, also evokes the idea of ​​intelligent packaging, connected objects or medical devices ”  because of the non-toxicity of the material . In the short term, these same researchers plan to replicate the experiment with animal hair, such as that of dogs and sheep.