title: Note: high-efficiency energy harvester using double-clamped piezoelectric beams.
abstract: In this study, an improvement in energy conversion efficiency has been reported, which is realized by using a double-clamped piezoelectric beam, based on uniaxial stretching strain. The buckling mechanism is applied to maximize axial stress in the double-clamped beam. The voltage generated by using the double-clamped piezoelectric beam is higher than that generated by using other conventional structures, such as bending cantilevers coated/sandwiched with piezoelectric film, which is proven both theoretically and experimentally. The power generation efficiency is enhanced by further optimizing the double-clamped structure. The optimized high-efficiency energy harvester utilizing double-clamped piezoelectric beams generates a peak output power of 80 μW, under an acceleration of 0.1g.
authors.affiliation: MEMS and Nanotechnology Laboratory, School of Mechanical Systems Engineering, Chonnam National University, Gwangju, South Korea.
authors.forename: Yingmei
authors.initials: Y
authors.lastname: Zheng
authors.affiliation: MEMS and Nanotechnology Laboratory, School of Mechanical Systems Engineering, Chonnam National University, Gwangju, South Korea.
authors.forename: Xuan
authors.initials: X
authors.lastname: Wu
authors.affiliation: MEMS and Nanotechnology Laboratory, School of Mechanical Systems Engineering, Chonnam National University, Gwangju, South Korea.
authors.forename: Mitesh
authors.initials: M
authors.lastname: Parmar
authors.affiliation: MEMS and Nanotechnology Laboratory, School of Mechanical Systems Engineering, Chonnam National University, Gwangju, South Korea.
authors.forename: Dong-weon
authors.initials: DW
authors.lastname: Lee