Sentences with phrase «vibration harvesters»

Many vibration harvesters contain piezoelectric substances that create an electric voltage when mechanically bent.

To make efficient vibration harvesters from PVDF, researchers must stack the polymer in multiple layers, improving the output current and reducing the electrical impedance that is inherent to piezoelectric materials.

Now, Kui Yao and co-workers from the A * STAR Institute of Materials Research and Engineering in Singapore have discovered a way to give lightweight polymer vibration harvesters a hundredfold boost in energy output — a finding that may help to eliminate manual battery recharging in microsensors and mobile devices.