Detail A3 · Theoretical study · PiezoelectricityCompleted
Harvesting energy from ambient sound
Ambient sound carries a small amount of mechanical energy. Piezoelectric materials produce a voltage when they are deformed, so in principle they can turn that sound into electricity.
Problem statement
How much electrical power can realistically be recovered from ambient sound with a piezoelectric element?
Methodology & approach
With a classmate, I studied the theory behind such a device: how acoustic pressure deforms a piezoelectric element, and how much electrical power can realistically be recovered from it.