Piezoelectric energy harvesting from ambient vibrations offers an environmentally friendly approach to powering distributed sensors for the Internet of Things. This paper gives a direct comparison Pb(Zr,Ti)O3 (PZT)- and (K,Na)NbO3 (KNN)-based harvesters using compliant mechanism harvester design resonant frequencies 20, 40, 70 Hz. At Hz, measured power densities PZT- KNN-based devices are 1139 ...

Domains and domain walls play a critical role in determining the functional properties of ferroelectric thin films for various applications. Understanding formation structures domains is vital importance to manipulating their configurations exploring dynamics. When assemble into hierarchical structures, superdomains superdomain emerge, which exhibits exotic morphology may lead distinct new beha...