Contacting mode operation of work function energy harvester

Aapo Varpula (Corresponding Author), Sampo J. Laakso, Tahvo Havia, Jukka Kyynäräinen, Mika Prunnila (Corresponding Author)

    Research output: Contribution to journalArticleScientificpeer-review

    7 Citations (Scopus)


    The work function energy harvester (WFEH) is a variable capacitance vibration energy harvester where the charging of the capacitor electrodes is driven by the work function difference of the electrode materials. In this work, we investigate operation modes of the WFEH by utilizing a macroscopic parallel plate capacitor with Cu and Al electrodes and varying plate distance. We show that by charging the electrodes of the WFEH by letting the electrode plates touch during the operation a significant output power enhancement can be achieved in comparison to the case where the electrodes are charged and discharged only through a load resistor.
    Original languageEnglish
    Article number012010
    JournalJournal of Physics: Conference Series
    Publication statusPublished - 2014
    MoE publication typeA1 Journal article-refereed
    Event14th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications, PowerMEMS 2014 - Hyogo, Japan
    Duration: 18 Nov 201421 Nov 2014


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