材料科学
制作
陶瓷
静电纺丝
压电
纳米纤维
复合材料
聚合物
煅烧
化学工程
电介质
钙钛矿(结构)
纳米技术
光电子学
工程类
医学
病理
生物化学
催化作用
化学
替代医学
作者
Jianhua Yan,Yuhui Han,Shuhui Xia,Xiao Wang,Yuanyuan Zhang,Jianyong Yu,Bin Ding
标识
DOI:10.1002/adfm.201907919
摘要
Abstract BaTiO 3 crystals are attractive materials due to their high dielectric properties, but they are brittle and inelastic ceramics, which limits their broader applications in emerging fields, such as flexible electronics. A scalable strategy for the fabrication of ultra‐flexible crystalline BaTiO 3 nanofiber (NF) films by a sol–gel electrospinning method, followed by a brief calcination, is reported. It facilitates the formation of perovskite BaTiO 3 crystals with intricate grain boundaries at a low temperatures by growing them within polymer NF templates. The ceramic films have a polymer‐like softness of 50 mN, a large Young's modulus of 61 MPa, and an elastic strain of 0.9%. Moreover, they have a low density of 28 mg cm −3 and demonstrate superior softness without fracture after deformation. Piezoelectric sensors fabricated based on these films exhibit a high sensitivity of 80 ms with an output voltage of 1.05 V at a pressure of 100 kPa. This approach allows for the large‐scale fabrication of flexible BaTiO 3 crystal NF films.
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