A piezoelectric mechanical energy harvesting (MEH) technique was recently demonstrated through in vivo experiment by harvesting energy from the motion of porcine left ventricle (LV) myocardial wall. This provides a new strategy of energy supply for operating implantable biomedical devices so as to avoid various shortcomings associated with battery energy. This paper resorts to an analytical electromechanical model for evaluating the efficiency of the piezoelectric MEH device especially of that used in closed chest environment. A nonlinear compressive spring model is proposed to account for the impeding effect of surrounding tissues on the device. Inputting the periodic variation of the LV volume as a loading condition to the device, numerical predictions for the electric outputs are obtained and compare well with experiments. A simple scaling law for the output electric power is established in terms of combined material, geometrical, circuit, and LV motion parameters. The results presented here may provide guidelines for the design of in vivo piezoelectric energy harvesting from motions of biological organs.
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June 2016
Research-Article
Electromechanical Modeling of Energy Harvesting From the Motion of Left Ventricle in Closed Chest Environment
Yangyang Zhang,
Yangyang Zhang
Department of Civil Engineering,
Zhejiang University,
Hangzhou 310058, China
Zhejiang University,
Hangzhou 310058, China
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Yisheng Chen,
Yisheng Chen
Department of Civil Engineering,
Zhejiang University,
Hangzhou 310058, China
Zhejiang University,
Hangzhou 310058, China
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Bingwei Lu,
Bingwei Lu
Department of Engineering Mechanics,
Tsinghua University,
Beijing 100084, China
Tsinghua University,
Beijing 100084, China
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Chaofeng Lü,
Chaofeng Lü
Department of Civil Engineering,
Zhejiang University,
Hangzhou 310058, China;
Zhejiang University,
Hangzhou 310058, China;
Key Laboratory of Soft Machines and
Smart Devices of Zhejiang Province,
Zhejiang University,
Hangzhou 310027, China;
Smart Devices of Zhejiang Province,
Zhejiang University,
Hangzhou 310027, China;
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Xue Feng
Xue Feng
Department of Engineering Mechanics,
Tsinghua University,
Beijing 100084, China
e-mail: fengxue@mail.tsinghua.edu.cn
Tsinghua University,
Beijing 100084, China
e-mail: fengxue@mail.tsinghua.edu.cn
Search for other works by this author on:
Yangyang Zhang
Department of Civil Engineering,
Zhejiang University,
Hangzhou 310058, China
Zhejiang University,
Hangzhou 310058, China
Yisheng Chen
Department of Civil Engineering,
Zhejiang University,
Hangzhou 310058, China
Zhejiang University,
Hangzhou 310058, China
Bingwei Lu
Department of Engineering Mechanics,
Tsinghua University,
Beijing 100084, China
Tsinghua University,
Beijing 100084, China
Chaofeng Lü
Department of Civil Engineering,
Zhejiang University,
Hangzhou 310058, China;
Zhejiang University,
Hangzhou 310058, China;
Key Laboratory of Soft Machines and
Smart Devices of Zhejiang Province,
Zhejiang University,
Hangzhou 310027, China;
Smart Devices of Zhejiang Province,
Zhejiang University,
Hangzhou 310027, China;
Xue Feng
Department of Engineering Mechanics,
Tsinghua University,
Beijing 100084, China
e-mail: fengxue@mail.tsinghua.edu.cn
Tsinghua University,
Beijing 100084, China
e-mail: fengxue@mail.tsinghua.edu.cn
1Corresponding authors.
Contributed by the Applied Mechanics Division of ASME for publication in the JOURNAL OF APPLIED MECHANICS. Manuscript received February 22, 2016; final manuscript received March 10, 2016; published online March 29, 2016. Editor: Yonggang Huang.
J. Appl. Mech. Jun 2016, 83(6): 061007 (7 pages)
Published Online: March 29, 2016
Article history
Received:
February 22, 2016
Revised:
March 10, 2016
Citation
Zhang, Y., Chen, Y., Lu, B., Lü, C., and Feng, X. (March 29, 2016). "Electromechanical Modeling of Energy Harvesting From the Motion of Left Ventricle in Closed Chest Environment." ASME. J. Appl. Mech. June 2016; 83(6): 061007. https://doi.org/10.1115/1.4032994
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