Metaharvesting: emergent energy harvesting by piezoelectric metamaterials Journal Article uri icon

Overview

abstract

  • Vibration energy harvesting is a technology that enables electric power generation by augmenting vibrating materials or structures with piezoelectric elements. In a recent work, we quantified the intrinsic energy-harvesting availability (EHA) of a piezoelectric phononic crystal (Piezo-PnC) by calculating its damping ratio across the Brillouin zone and subtracting off the damping ratio of the corresponding non-piezoelectric version of the phononic crystal. It was highlighted that the resulting quantity indicates the amount of useful energy available for harvesting and is independent of the finite structure size and boundary conditions and of any forcing conditions. Here, we investigate the intrinsic EHA of two other material systems chosen to be statically equivalent to a given Piezo-PnC: a piezoelectric locally resonant metamaterial (Piezo-LRM) and a piezoelectric inertially amplified metamaterial (Piezo-IAM). Upon comparing with the intrinsic EHA of the Piezo-PnC, we observe an emergence of energy-harvesting capacity, a phenomenon we refer to as metaharvesting. This is analogous to the concept of metadamping, except the quantity evaluated is associated with piezoelectric energy harvesting rather than raw dissipation. Our results show that the intrinsic EHA is enhanced by local resonances and enhanced further by inertial amplification. These findings offer a new paradigm for the design—at the fundamental level—of architectured piezoelectric materials with superior energy-harvesting capacity.

publication date

  • November 1, 2024

has restriction

  • hybrid

Date in CU Experts

  • November 13, 2024 10:13 AM

Full Author List

  • Patrick I; Adhikari S; Hussein MI

author count

  • 3

Other Profiles

International Standard Serial Number (ISSN)

  • 1364-5021

Electronic International Standard Serial Number (EISSN)

  • 1471-2946

Additional Document Info

volume

  • 480

issue

  • 2301