Piezoelectrics

Synchronicity and pure bending of bimorphs: a new approach to piezoelectric energy Harvesting

Kinetic energy Harvesting with piezoelectric bimorphs has attracted considerable research interest in recent years. Many works have been dedicated to the modelling and optimisation of the cantilevered geometry to increase power density, bandwidth, …

Cellular polypropylene electromechanical properties: exploring the nonlinear region

Many studies have been conducted in the last decades on cellular polypropylene (Cell-PP) films. Most of them focus on the optimisation of the material for sensor applications. Processed under Gas Diffusion Expansion (GDE), Cell-PP films show high …

Pizzicato goes contactless

Boost energy generation for a plucking energy harvester

An FE model of a cellular polypropylene: exploring mechanical properties

Several analytical models have been suggested to describe the changes in the electromechanical properties of Cellular Polypropylene (Cell-PP) due to charging. However, there is a limited number of studies considering the non-linear dependence of the …

Magnetic plucking of piezoelectric bimorphs for a wearable energy harvester

A compact and low-profile energy harvester designed to be worn on the outside of the knee-joint is presented. Frequency up-conversion has been widely adopted in recent times to exploit the high frequency response of piezoelectric transducers within …

Low-profile and wearable energy harvester based on plucked piezoelectric cantilevers

The Pizzicato Energy Harvester (Energy Harvesting) introduced the technique of frequency up-conversion to piezoelectric Energy Harvestings wearable on the lateral side of the knee-joint. The operation principle is to pluck the piezoelectric bimorphs …

Energy Harvesting: cellular PP

Cell-PP is a light-weight and flexible material for Energy Harvesting

Impulse excitation of piezoelectric bimorphs for energy Harvesting: a dimensionless model

Energy Harvesting (Energy Harvesting) is a multidisciplinary research area, involving physics, materials science and engineering, with the objective of providing renewable sources of power sufficient to operate targeted low-power applications. …

Plucked Piezoelectric Bimorphs for Energy Harvesting

In this chapter, the plucking technique of frequency up-conversion is introduced, modelled and applied to energy Harvesting. The aim of the technique is to bridge the gap between the high-frequency response of piezoelectric energy harvesters and the …

Experimental characterisation of macro fibre composites and monolithic piezoelectric transducers for strain energy Harvesting

Compact and lightweight energy harvesters are needed to power wireless sensor nodes (WSNs). WSNs can provide health monitoring of aircraft structures, improving safety and reducing costs by enabling predictive maintenance. A simple solution, which …