comscore Tattoo-like 'e-skin' turns your body into digital screen
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Tattoo-like 'e-skin' turns your body into digital screen

Researchers from University of Tokyo have developed protective layer that will help create "electronic skin" displays of blood oxygen level, e-skin heart rate sensors for athletes and other applications.

  • Updated: April 19, 2016 4:05 AM IST
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In a yet another example to integrate electronic devices with the human body, researchers from the University of Tokyo have developed an ultrathin, protective layer that will help create “electronic skin” displays of blood oxygen level, e-skin heart rate sensors for athletes and other applications. The team demonstrated its use by creating an air-stable, organic light-emitting diode (OLED) display. Also Read - National Science Day: Top 5 AR apps available on Apple's App Store to learn science

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Integrating electronic devices with the human body to enhance or restore body function for biomedical applications is the goal of researchers around the world. Wearable electronics, in particular, need to be thin and flexible to minimize impact where they attach to the body. However, most devices developed so far have required millimetre-scale thickness glass or plastic substrates with limited flexibility, while micrometer-scale thin flexible organic devices have not been stable enough to survive in air. Also Read - Xiaomi Mi Band 5 set to launch on the global stage; teaser hints at July launch

Professor Takao Someya and Tomoyuki Yokota developed a high-quality protective film less than two micrometers thick that enables the production of ultrathin, ultraflexible, high performance wearable electronic displays and other devices.

“What would the world be like if we had displays that could adhere to our bodies and even show our emotions or level of stress or unease?” asked Someya. “In addition to not having to carry a device with us at all times, they might enhance the way we interact with those around us or add a whole new dimension to how we communicate,” he added in a university statement.

The protective film prevented passage of oxygen and water vapour in the air, extending device lifetimes from the few hours seen in prior research to several days. In addition, the research group were able to attach transparent indium tin oxide (ITO) electrodes to an ultrathin substrate without damaging it, making the e-skin display possible.

Using the new protective layer and ITO electrodes, the research group created polymer light-emitting diodes (PLEDs) and organic photodetectors (OPDs). These were thin enough to be attached to the skin and flexible enough to distort and crumple in response to body movement. This reduced heat generation and power consumption, making them particularly suitable for direct attachment to the body for medical applications such as displays for blood oxygen concentration or pulse rate.

The research group also combined red and green PLEDs with a photodetector to demonstrate a blood oxygen sensor.

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  • Published Date: April 19, 2016 4:00 AM IST
  • Updated Date: April 19, 2016 4:05 AM IST



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