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Tunable, multi-modal, and multi-directional vibration energy harvester based on three-dimensional architected metastructures

Research output: Contribution to journalArticle

Original languageEnglish
Article number114615
Number of pages11
JournalApplied Energy
Volume264
Early online date25 Feb 2020
DOIs
DateAccepted/In press - 4 Feb 2020
DateE-pub ahead of print (current) - 25 Feb 2020
DatePublished - 15 Apr 2020

Abstract

Conventional vibration energy harvesters based on two-dimensional planar layouts have limited harvesting capacities due to narrow frequency bandwidth and because their vibratory motion is mainly restricted to one plane. Three-dimensional architected structures and advanced materials with multifunctional properties are being developed in a broad range of technological fields. Structural topologies exploiting compressive buckling deformation mechanisms however provide a versatile route to transform planar structures into sophisticated three-dimensional architectures and functional devices. Designed geometries and Kirigami cut patterns defined on planar precursors contribute to the controlled formation of diverse threedimensional forms. In this work, we propose an energy harvesting system with tunable dynamic properties, where piezoelectric materials are integrated and strategically designed into three-dimensional compliant architected metastructures. This concept enables energy scavenging from vibrations not only in multiple directions but also across a broad frequency bandwidth, thus increasing the energy harvesting efficiency. The proposed system comprises a buckled ribbon with optional Kirigami cuts. This platform enables the induction of vibration modes across a wide range of resonance frequencies and in arbitrary directions, mechanically coupling with four cantilever piezoelectric beams to capture vibrations. The multi-modal and multi-directional harvesting performance of the proposed configurations has been demonstrated in comparison with planar systems. The results suggest this is a facile strategy for the realization of compliant and high-performance energy harvesting and advanced electronics systems based on mechanically assembled platforms.

    Research areas

  • energy harvesting, Kirigami, multi-modal, multi-directional, vibration

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  • Full-text PDF (author’s accepted manuscript)

    Rights statement: This is the author accepted manuscript (AAM). The final published version (version of record) is available online via Elsevier at https://www.sciencedirect.com/science/article/pii/S0306261920301276 . Please refer to any applicable terms of use of the publisher.

    Accepted author manuscript, 3.53 MB, PDF document

    Embargo ends: 25/02/22

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    Licence: CC BY-NC-ND

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