Tag Archives: renewable-energy

Unlike conventional noise absorbers or energy harvesters, these meta-stacks (including designs like helical porous stacks and pie-slice resonators) bring a leap forward in capability. The device consists of a resonant chamber (resonator), a specially designed porous stack inside it, and built-in thermoelectric elements forming a Thermocouple. As sound waves enter the resonator, the helical-shaped poresContinue reading “Meta-Stacks that Silence and Harvest Sound”