• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nanotechnology >Enhanced piezoresponse of highly aligned electrospun poly(vinylidene fluoride) nanofibers
【24h】

Enhanced piezoresponse of highly aligned electrospun poly(vinylidene fluoride) nanofibers

机译：增强高度对准的ElectromeOn聚（偏二氟乙烯）纳米纤维的压电响应

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Well-ordered nanostructure arrays with controlled densities can potentially improve material properties; however, their fabrication typically involves the use of complicated processing techniques. In this work, we demonstrate a uniaxial alignment procedure for fabricating poly (vinylidene fluoride) (PVDF) electrospun nanofibers (NFs) by introducing collectors with additional steps. The mechanism of the observed NF alignment, which occurs due to the concentration of lateral electric field lines around collector steps, has been elucidated via finite-difference time-domain simulations. The membranes composed of well-aligned PVDF NFs are characterized by a higher content of the PVDF beta-phase, as compared to those manufactured from randomly orientated fibers. The piezoelectric energy harvester, which was fabricated by transferring well-aligned PVDF NFs onto flexible substrates with Ag electrodes attached to both sides, exhibited a 2-fold increase in the output voltage and a 3-fold increase in the output current as compared to the corresponding values obtained for the device manufactured from randomly oriented NFs. The enhanced piezoresponse observed for the aligned PVDF NFs is due to their higher beta-phase content, denser structure, smaller effective radius of curvature during bending, greater applied strain, and higher fraction of contributing NFs.
机译：具有受控密度的良好订购的纳米结构阵列可以提高材料特性;然而，它们的制造通常涉及使用复杂的加工技术。在这项工作中，我们通过将收集器与附加步骤引入收集器来证明制造聚（偏二氟乙烯）（PVDF）电纺纳米纤维（NFS）的单轴排列步骤。由于收集器步骤周围的横向电场线的浓度而发生的观察到的NF对准的机理已经通过有限差差时域模拟阐明。与由随机取向纤维制成的那些相比，由良好对准的PVDF NFS组成的膜的特征在于PVDFβ相的含量较高。通过将对准的PVDF NFS转移到具有附着在两侧的AG电极的柔性基板上通过将对准的PVDF NF转移到柔性基板中制造的压电能量收割机表现出输出电压的2倍，并且与输出电流相比，输出电流增加3倍。用于由随机定向的NFS制造的装置获得的相应值。对对准的PVDF NFS观察到的增强压电响应是由于其较高的β相含量，更密集结构，弯曲期间较小的有效曲率半径，更高的应用应变和贡献的NFS的更高分数。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号