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A Stretchable Display Safely Lights Up Human Skin

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A stretchable light-emitting device that operates at low voltages and is safe for human skin, developed by researchers at Nanjing University, could one day provide runners and others with a convenient alternative to a stopwatch or cellphone, allowing them to check their running times with a flick of the wrist. Alternating-current electroluminescent (ACEL) displays currently exist that can be stuck like a temporary tattoo onto skin and other surfaces. However, these displays require relatively high voltages to achieve sufficient brightness, which can create safety concerns. The Nanjing...Read full article

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