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A piezoelectric sensor is a tool that converts variations in pressure, acceleration, temperature, strain, or force into an electrical charge using the piezoelectric effect. Greek words beginning with the prefix piezo- mean to press or compress.
The creation of piezoelectric devices in thin, flexible, and, in some instances, mechanically stretchable formats. Transfer printing procedures can be used to integrate the materials onto compliant substrates to create flexible and/or stretchable devices.
The Global stretchable piezoelectric devices market accounted for $XX Billion in 2022 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2023 to 2030.
Stretchable piezoelectric energy devices are in greater demand as wearable technology and flexible electronics advance. When big batteries or other power sources cannot be used, energy harvesting can provide energy, and stretchability offers a user-friendly experience.
SPEHs continue to function poorly, which restricts how they can be used. This research uses a kirigami structure on a polyvinylidene fluoride film to create a wearable SPEH. The triboelectric, thermoelectric, and piezoelectric processes make up the energy-harvesting system.
A wearable device that offers good performance and is appropriate for this category is the piezoelectric mechanism because body motion can be viewed as mechanical strain.
Stretchable surfaces have been combined with piezoelectric fibre and nanowires. Due to their tiny cross-section, fibres and nanowires can be created using a variety of techniques, such as electrospinning and ultrasonication, and they are more flexible than one-dimensional nanostructures. To further improve stretchability, three-dimensional microstructures, such as hemispheres, pyramids and microfoams have been explored.
PVDF films have excellent biocompatibility and flexibility. However, their piezoelectric coefficients are modest. This research makes a unique addition to the literature by improving the performance of SPEHs using stress redistribution within the film.
This research was carried out using two methods. The first method makes use of topological depolarization, which stops the production of opposite charges and improves the general performance of the piezoelectric effect.The second method increases the tension placed on the piezoelectric film’s surface and optimises the neutral axis by using a backing layer.
