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Polymer Template Synthesis of Flexible BaTiO 3 Crystal Nanofibers
Author(s) -
Yan Jianhua,
Han Yuhui,
Xia Shuhui,
Wang Xiao,
Zhang Yuanyuan,
Yu Jianyong,
Ding Bin
Publication year - 2019
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201907919
Subject(s) - materials science , fabrication , ceramic , electrospinning , piezoelectricity , nanofiber , composite material , polymer , calcination , dielectric , perovskite (structure) , nanotechnology , optoelectronics , chemical engineering , medicine , biochemistry , catalysis , alternative medicine , chemistry , pathology , engineering
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.