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Researchers developed a battery-free sensor that reacts to sound waves, producing vibrational energy to power an electronic device | The novel sensor would not only reduce battery waste but could also power medical devices like cochlear implants or monitor buildings for faults.
Researchers have developed a battery-free sensor that reacts to sound waves, such as particular spoken words, producing enough vibrational energy to power an electronic device. The novel sensor would not only reduce battery waste but could also power medical devices like cochlear implants or…
Researchers have developed a battery-free sensor that reacts to sound waves, such as particular spoken words, producing enough vibrational energy to power an electronic device. Because “four” produces more sound energy than “three,” it causes the sensor to vibrate, switching on a device or triggering a subsequent process, whereas speaking the word “three” had no effect. Using computer modeling and algorithms, the researchers designed their sensor’s structure using a lattice of identical silicon plates (resonators) connected by tiny bars that act like springs.
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