Highly anisotropic power generation in piezoelectric hemispheres composed stretchable composite film for self-powered motion sensor

被引：127

作者：

Chun, Jinsung ^{[1
]}

Kang, Na-Ri ^{[1
]}

Kim, Ju-Young ^{[1
]}

Noh, Myoung-Sub ^{[2
]}

Kang, Chong-Yun ^{[2
,3
]}

Choi, Dukhyun ^{[4
]}

Kim, Sang-Woo ^{[5
]}

Wang, Zhong Lin ^{[6
]}

Baik, Jeong Min ^{[1
]}

机构：

[1] Ulsan Natl Inst Sci & Technol, KIST UNIST Ulsan Ctr Convergent Mat, Sch Mat Sci & Engn, Ulsan, South Korea

[2] Korea Univ, KU KIST Grad Sch Converging Sci & Technol, Seoul 136701, South Korea

[3] KIST, Elect Mat Res Ctr, Seoul 137791, South Korea

[4] Kyung Hee Univ, Coll Engn, Dept Mech Engn, Yongin 446701, South Korea

[5] Sungkyunkwan Univ SKKU, Sch Adv Mat Sci & Engn, Suwon 440746, South Korea

[6] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA

来源：

NANO ENERGY | 2015年 / 11卷

基金：

新加坡国家研究基金会;

关键词：

Anisotropic; Hemispheres; Piezoelectrics; Stretchable; Composite; Nanogenerator; FLEXIBLE NANOGENERATOR; NANOPARTICLES; PERFORMANCE; NANOWIRES; CELL;

D O I：

10.1016/j.nanoen.2014.10.010

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：1 / 10

页数：10

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