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The Power of the Face, Ultrasound Glasses, Listening Cat

Curiosity Weekly

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How Do Piezoelectric Glasses Work?

Scientists have developed glasses that can detect eye blinks using ultrasound. The device uses a piezoelectric layer sandwiched between electrical and mechanical parts to keep it small. Scientists tested the technology on six people with different eye shapes and eyelid thicknesses. After some more long-term human testing, they believe the design can be improved.

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