Highly anisotropic power generation in piezoelectric hemispheres composed stretchable composite film for self-powered motion sensor
Highly anisotropic power generation in piezoelectric hemispheres composed stretchable composite film for self-powered motion sensor
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DOI：
10.1016/j.nanoen.2014.10.010
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发表时间：
2015-01-01
期刊：
影响因子：
17.6
通讯作者：
Baik, Jeong Min
中科院分区：
文献类型：
--
作者：
Chun, Jinsung;Kang, Na-Ri;Baik, Jeong Min
高度可拉伸的压电半球复合薄膜纳米发电机是一种自供电、异常灵敏的传感器，可提供来自人体的敏感运动信息。复合薄膜是基于嵌入软基质聚二甲基硅氧烷（PDMS）的高度有序压电半球，在正常弯曲力下产生高达6 V和0.2 μ a /cm(2)的大功率输出。通过一层一层地堆叠这样的半球，电输出增加了。薄膜的应变灵敏度随弯曲方向的不同而不同，由于强电偶极子排列，半球复合材料的凸弯曲获得了高灵敏度。薄膜附着在手腕表面，其输出电压/电流密度提供手腕运动的信息。(C) 2014 Elsevier Ltd.版权所有。
Highly-stretchable piezoelectric hemispheres composed composite thin film nanogenerators are fabricated as a self-powered, exceptionally sensitive sensor for providing sensitive motion information from a human body. The composite films are based on the highly-ordered piezoelectric hemispheres embedded in a soft matrix, polydimethylsiloxane (PDMS) and generate large power output up to 6 V and 0.2 mu A/cm(2) under normal bending force. The electrical outputs increase by stacking such hemispheres layer-by-layer. The strain sensitivity of the films differs according to the bending direction, and the high sensitivity is achieved by convex bending for hemisphere composite due to the strong electric dipole alignment. The films are attached on the surface of a wrist and its output voltage/current density provides the information on the wrist motion. (C) 2014 Elsevier Ltd. All rights reserved.