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Measured Output Voltages of Piezoelectric Devices Depend on the Resistance of Voltmeter
Su, Yewang1,2; Dagdeviren, Canan3,4; Li, Rui5; Su, YW (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
Source PublicationADVANCED FUNCTIONAL MATERIALS
2015-09-02
Volume25Issue:33Pages:5320-5325
ISSN1616-301X
AbstractPiezoelectric 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.
KeywordEnergy Harvesters Piezoelectric Devices Zirconate Titanate Stretchable Electronics Voltage Output
DOI10.1002/adfm.201502280
URL查看原文
Indexed BySCI
Language英语
WOS IDWOS:000360724600009
WOS KeywordNANOGENERATOR ; NANOFIBERS ; CERAMICS ; BEHAVIOR
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS SubjectChemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
Funding OrganizationThe 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).
DepartmentLNM苏业旺
Classification二类/Q1
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/55772
Collection非线性力学国家重点实验室
Corresponding AuthorSu, YW (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
Affiliation1.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
Recommended Citation
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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