Ceramic doped-polymer structures as organic and inorganic hybrid structures constitute a new area of advanced materials for flexible and stretchable sensors and actuators. Here, uniform ceramic-polymer composites of tetragonal BaTiO₃ and polyvinylidene fluoride (PVDF) were prepared using solution casting to improve the pressure sensitivity. By introducing Ba–TiO₃ nanoparticles to PVDF nanofibers, piezoelectricity and pressure sensitivity of hybrid nanofiber mats were significantly improved. In addition, we proposed a novel flexible and stretchable multilayered pressure sensor composed of electrospun nanocomposite fibers with high electrical sensitivity up to 6 mV N⁻¹ compared to 1.88 mV N⁻¹ for the pure PVDF sensors upon the application of cyclic loads at 2.5 Hz frequency and a constant load of 0.5 N. Indeed, this work provides a composition-dependent approach for the fabrication of nanostructures for pressure sensors in a wide variety of wearable devices and technologies.

中文翻译：

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具有更高效率的柔性电纺 PVDF-BaTiO3 混合结构压力传感器

作为有机和无机混合结构的陶瓷掺杂聚合物结构构成了用于柔性和可拉伸传感器和执行器的先进材料的新领域。在这里，使用溶液浇铸法制备了均匀的四方 BaTiO _{3和聚偏二氟乙烯 (PVDF) 陶瓷-聚合物复合材料，以提高压力敏感性。}通过将 Ba-TiO ₃纳米粒子引入 PVDF 纳米纤维，混合纳米纤维垫的压电性和压力敏感性得到显着改善。此外，我们提出了一种由电纺纳米复合纤维组成的新型柔性和可拉伸多层压力传感器，其电灵敏度高达 6 mV N ^-1，而 1.88 mV N ^-1用于纯 PVDF 传感器，在 2.5 Hz 频率和 0.5 N 恒定负载下施加循环负载。事实上，这项工作为在各种可穿戴设备和技术中制造压力传感器的纳米结构提供了一种依赖于成分的方法.