Lead-free (K, Na)NbO3 based impact type energy harvesters integrated with a cylindrical cavity for metal ball

Le Van Minh, Motoaki Hara, Hiroyuki Oguchi, Hiroki Kuwano

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

In this study, we developed lead-free (K, Na)NbO3 (KNN) based energy harvesters using impact of the metal ball. A metal ball was put in a built-in cylindrical cavity to perpendicularly impact the KNN/Si cantilever. Due to this impact, free oscillation of the cantilever was induced. This device can operate at low and wide frequency range of 20-190 Hz, and is suitable for the energy harvesting from the environmental vibration. We evaluated the influence of the impact point on the cantilever for the power generation. As a result, the harvested power increased up to 15-fold when the impact position moved from tip to base of the cantilever. The maximum power of 44 nW was obtained with a 2.5 mm length cantilever when the shaking frequency, acceleration and load resistance were 190 Hz, 39 m/s2 (4g) and 7.3 KΩ, respectively.

Original languageEnglish
Title of host publicationIEEE 26th International Conference on Micro Electro Mechanical Systems, MEMS 2013
Pages833-836
Number of pages4
DOIs
Publication statusPublished - 2013 Apr 2
EventIEEE 26th International Conference on Micro Electro Mechanical Systems, MEMS 2013 - Taipei, Taiwan, Province of China
Duration: 2013 Jan 202013 Jan 24

Publication series

NameProceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)
ISSN (Print)1084-6999

Other

OtherIEEE 26th International Conference on Micro Electro Mechanical Systems, MEMS 2013
CountryTaiwan, Province of China
CityTaipei
Period13/1/2013/1/24

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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