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Issue 11, 2011
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PVDF microbelts for harvesting energy from respiration

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In this paper, we report a technique that uses piezoelectric polyvinylidene fluoride (PVDF) microbelts to convert the energy from low-speed air flow to electricity via their resonant oscillation. The micrometre thick PVDF thin films were fabricated by a top-down reactive ion etching process, where the thickness was controlled by etching time and the piezoelectric phase was well preserved. The thickness, air flow speed and electrical output relationship was predicted theoretically and characterized experimentally. The PVDF microbelts were able to generate sufficient electrical energy from low speed air flow for the sustained operation of small electronic devices. Their capability for harvesting energy from simulated respiration was also demonstrated.

Graphical abstract: PVDF microbelts for harvesting energy from respiration

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The article was received on 29 Jul 2011, accepted on 19 Aug 2011 and first published on 15 Sep 2011

Article type: Communication
DOI: 10.1039/C1EE02241E
Energy Environ. Sci., 2011,4, 4508-4512

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    PVDF microbelts for harvesting energy from respiration

    C. Sun, J. Shi, D. J. Bayerl and X. Wang, Energy Environ. Sci., 2011, 4, 4508
    DOI: 10.1039/C1EE02241E

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