Piezoelectric-based MEMS have been used for sensors, but they can also be used as actuators to do things like move air and fluids. One thing that can be done is to implement a tiny speaker using this technology.  

In this episode, xMEMS Labs’ Vice President of Marketing and Business Development, Mike Housholder, talks about his company's device. You can also watch the demos in our video, Making MEMS Move Air and Fluids for Fun and Cooling.