Flexible inorganic piezoelectric functional films and their applications

Piezoelectric materials play an increasingly important role in energy harvesters, sensors, and actuators. Flexible thin piezoelectric films have been demonstrated to provide advanced functionalities improved performances. However, the research on flexible inorganic has rarely systematically summarized. Here, we summarize recent advances films, focusing their structural designs, fabrication techniques, applications various practical scenarios. Specifically, different techniques suitable for diverse nanostructures are reviewed, including sol–gel, hydrothermal, electrospinning, other integration process with substrates is further discussed. Biomedical industrial of emphasized. Finally, some existing challenges future perspectives