Measured Output Voltages of Piezoelectric Devices Depend on the Resistance of Voltmeter

doi:10.1002/adfm.201502280

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	Measured Output Voltages of Piezoelectric Devices Depend on the Resistance of Voltmeter
	Su, Yewang1,2 ; Dagdeviren, Canan 3,4; Li, Rui 5; Su, YW (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
发表期刊	ADVANCED FUNCTIONAL MATERIALS
	2015-09-02
卷号	25 期号:33 页码:5320-5325
ISSN	1616-301X
摘要	Piezoelectric mechanical energy harvester (MEH) has been developed as an important emerging variant of piezoelectric devices. Experiments in the literature show that the voltage-time curves of piezoelectric devices encompass both positive and negative characteristics even though the strain in the piezoelectric material is always positive during the applied cycling load. This does not agree with the results predicted by the piezoelectric theory of open circuit. Here, both the experiments and theory are performed to understand this important problem. A zirconate titanate (PZT) MEH is fabricated and the output voltages are recorded with three voltmeters. It is found that the measured voltages depend on the resistance of voltmeter. The peak value of voltage increases with the increase of the resistance of voltmeter, which is contrary to the established knowledge that the measurement results are independent of the instruments used. A theoretical model considering the voltmeter with finite resistance is established. The charge is allowed to go through the voltmeter and switch the directions during increasing and releasing of strain. The results by this model agree well with those from the experiments. The findings suggest that the resistance of voltmeter should be reported for voltage measurement of the piezoelectric devices.; Piezoelectric mechanical energy harvester (MEH) has been developed as an important emerging variant of piezoelectric devices. Experiments in the literature show that the voltage-time curves of piezoelectric devices encompass both positive and negative characteristics even though the strain in the piezoelectric material is always positive during the applied cycling load. This does not agree with the results predicted by the piezoelectric theory of open circuit. Here, both the experiments and theory are performed to understand this important problem. A zirconate titanate (PZT) MEH is fabricated and the output voltages are recorded with three voltmeters. It is found that the measured voltages depend on the resistance of voltmeter. The peak value of voltage increases with the increase of the resistance of voltmeter, which is contrary to the established knowledge that the measurement results are independent of the instruments used. A theoretical model considering the voltmeter with finite resistance is established. The charge is allowed to go through the voltmeter and switch the directions during increasing and releasing of strain. The results by this model agree well with those from the experiments. The findings suggest that the resistance of voltmeter should be reported for voltage measurement of the piezoelectric devices.
关键词	Energy Harvesters Piezoelectric Devices Zirconate Titanate Stretchable Electronics Voltage Output
DOI	10.1002/adfm.201502280
URL	查看原文
收录类别	SCI
语种	英语
WOS记录号	WOS:000360724600009
关键词[WOS]	NANOGENERATOR ; NANOFIBERS ; CERAMICS ; BEHAVIOR
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
项目资助者	The authors thank Prof. John A. Rogers of the University of Illinois for his helpful discussions and continued support. C.D. thanks P. Joe for her assistance on experimental part. This work was supported by the National Natural Science Foundation of China (grant 11302038) and Fundamental Research Funds for the Central Universities of China (grant DUT15LK14).
课题组名称	LNM苏业旺
论文分区	二类/Q1
引用统计	被引频次：62[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/55772
专题	非线性力学国家重点实验室
通讯作者	Su, YW (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
作者单位	1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China 2.Northwestern Univ, Dept Civil & Environm Engn, Evanston, IL 60208 USA 3.MIT, David H Koch Inst Integrat Canc Res, Cambridge, MA 02138 USA 4.Univ Illinois, Frederick Seitz Mat Res Lab, Beckman Inst Adv Sci & Technol, Dept Mat Sci & Engn, Urbana, IL 61801 USA 5.Dalian Univ Technol, Dept Engn Mech, State Key Lab Struct Anal Ind Equipment, Dalian 116024, Peoples R China
推荐引用方式 GB/T 7714	Su, Yewang,Dagdeviren, Canan,Li, Rui,et al. Measured Output Voltages of Piezoelectric Devices Depend on the Resistance of Voltmeter[J]. ADVANCED FUNCTIONAL MATERIALS,2015,25,33,:5320-5325.
APA	Su, Yewang,Dagdeviren, Canan,Li, Rui,&Su, YW .(2015).Measured Output Voltages of Piezoelectric Devices Depend on the Resistance of Voltmeter.ADVANCED FUNCTIONAL MATERIALS,25(33),5320-5325.
MLA	Su, Yewang,et al."Measured Output Voltages of Piezoelectric Devices Depend on the Resistance of Voltmeter".ADVANCED FUNCTIONAL MATERIALS 25.33(2015):5320-5325.

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