This paper provides a detailed overview of developments in transducer materials technology
relating to their current and future applications in micro-scale devices. Recent advances in …

Wearable electronics have attracted attention for their potential use in constructing a human-
centered intelligent world. As one of the most promising materials for constructing high …

Ferroelectret nanogenerators were recently introduced as a promising alternative
technology for harvesting kinetic energy. Here we report the device's intrinsic properties that …

Cellular polymers can be internally charged by “microstorms”(silent or partial discharges)
within the voids of the polymer foam. The resulting material, which carries positive and …

Piezoelectrets (or piezoelectric polymer foams) are porous piezoelectric materials with a
wide range of applications particularly sensing. They have been successfully fabricated …

Piezoelectric energy harvesters (PEHs) have the potential to power low‐power electronic
devices and can advance, self‐powered, autonomous electronics to the next level …

Because of their ability to show ferroelectret behavior when exposed to an external electric
field, cellular polymers have been recently considered for ferroelectret applications. These …

Cellular space charge polymer electrets significantly enlarge the basis of pyro-and
piezoelectric as well as ferroic materials. Since the first review of the field has been …

Improvements of the sensitivity of piezoelectric microphones based on charged cellular
polymer films are reported. The improvements are achieved by (1) an increase of the …

Polymers with electrically charged internal air cavities (ferroelectrets) reveal a pronounced
piezoelectric response and are regarded as soft electroactive multi-functional materials. This …