The walls have ears, the saying goes--but at some point, so might people's clothes. With the help of fiber research at MIT, fabrics of the future could both hear and make noises.
Yoel Fink, an assistant professor at the Massachusetts Institute of Technology, and his colleagues developed fibers that are active where most are passive. Specifically, through a new application of widely used technology called piezoelectrics, fibers can convert sound waves into an electrical signal and vice versa, MIT announced Monday.
Piezoelectric speakers have been around for a long time--beeping digital watches and those musical greeting cards use them, … Read more