Tunable Ultrasonic Energy Harvesting for Implantable Biosensors and Medical Devices

M Pellegrino,L Lin,B E Eovino,L Beker,T Bourouina

doi:10.1088/1742-6596/773/1/012035

Abstract

This work reports a tunable ultrasonic energy harvesting (UEH) device capable of high power output and/or large bandwidth based on concentric piezoelectric ring-shaped structures. Two different designs are presented: (1) the single ring-shaped UEH (r-UEH), and (2) concentric r-UEHs. Concentric r-UEHs can save space and therefore can provide benefits in powering low-power implantable biosensors and medical devices. This paper presents results of simulation studies and initial experiments of a single r-UEH.

Highlights

With the recent development of the Internet of Things (IOT), wireless communication technology, and wireless sensors node (WSN) architectures, the lack of long-term batteries has become a practical problem for microsystems operating in hazardous and inaccessible areas such as the human body
This allows for the design of concentric r-ultrasonic energy harvesting (UEH) with the same resonance frequencies in order to achieve high power output, or with different resonance frequencies to achieve a large bandwidth
It is believed that due to acoustic reciprocity, these results should be indicative of the ability of ring-shaped UEH (r-UEH) to receive ultrasonic energy as well; an optimized readout circuit is needed to acquire a reliable signal from the r-UEHs

Summary

Introduction

With the recent development of the Internet of Things (IOT), wireless communication technology, and wireless sensors node (WSN) architectures, the lack of long-term batteries has become a practical problem for microsystems operating in hazardous and inaccessible areas such as the human body. 2. Ring-shape AEH Designs Two different designs are presented: (1) the single ring-shaped UEH (r-UEH), and (2) concentric rUEHs, see Fig. 1.

Results

Conclusion