A lighting control demo based on polypropylene ferroelectret films

Ferroelectrets are charged polymer foams with piezoelectric effects, developed around two decades ago. Compared with ceramic piezoelectric materials, ferroelectrets have many advantages, such as flexible, light weight, low acoustic impendence, and so on, indicating a lot of potential applications. Through developing corresponding circuits, this paper provides some interesting and innovative devices, which involves in electrical control, mechanical control, time-delayed control theory, and broadened the prospect in the market of the ferroelectrets.