• Wang, Chun-Hui
• Bagherzadeh, Roohollah
• Abrishami, Shayan
• Asadnia, Mohsen
• Varposhti, Arezo Mahdavi
• Peng, Shuhua

Abstract

In recent years, wearable sensors and energy harvesters have shown greatpotential for a wide range of applications in personalized healthcare,robotics, and human–machine interfaces. Among different types ofmaterials used in wearable electronics, piezoelectric materials havegained enormous attention due to their exclusive ability to harvestenergy from ambient sources. Piezoelectric materials can be utilized assensing elements in wearable sensors while harvesting biomechanicalenergy. Electrospun piezoelectric polymer nanofibers are extensivelyinvestigated due to their high flexibility, ease of processing,biocompatibility, and higher piezoelectric property (in contrast totheir corresponding cast films). However, as compared to piezoceramicmaterials, they mostly exhibit relatively lower piezoelectriccoefficients. Therefore, considerable efforts have been devoted toimproving the piezoelectricity of electrospun polymer nanofibersrecently, resulting in significant advances. This review presents abroad overview of these advances including new material, structuredesigns as well as new strategies to enhance piezoelectricity ofelectrospun polymer nanofibers. The challenges in achieving highmechanical performance as well as high piezoelectricity are particularlydiscussed. The main motivation of this review is to examine thesechallenges and highlight effective approaches to achievinghigh-performance piezoelectric sensors and energy harvesters forwearable technologies.

Topics

• impedance spectroscopy
• polymer
• biocompatibility
• piezoelectric material
• piezoelectric property