A broadband piezoelectric energy harvester for IoT based applications. (November 2019)

• Record Type: Journal Article
• Authors: Asthana, Prateek; Khanna, Gargi
• Is Part Of: Microelectronics journal. Volume 93(2019)
• Publication Date: 2019-11
• Subjects: Piezoelectric energy harvesting -- Finite element analysis -- Wide-band energy harvester -- Sensitivity analysis -- Ambient vibrations -- See-saw design; Microelectronics -- Periodicals; Microélectronique -- Périodiques; Microelectronics; Electronic journals; Journals - contents and abstracts; Periodicals; 621.3805
• DOI: 10.1016/j.mejo.2019.104635
• Languages: English
• ISSNs: 0959-8324

Abstract

Abstract: Advancement in fabrication technology and increasing levels of integration have enhanced the features of microelectronic systems. Growth of small structures or microsystems has developed the sensor network and "Internet of Things" revolution, thus providing a substantial portion of a digitized, automated and linked system around smart industries, housing, health, etc. Frequent maintenance and battery refurbishment are not desirable in microsystems, which require very low power (μW − mW) to operate. Hence, the battery-less operation is the most demanding area of micro-scale harvesting research. In this study, a low-frequency wide-band energy harvester based on see-saw structure is simulated and analyzed. See-saw design has provided a peak power of 0.175 mW. Mechanical response is studied in the form of tip displacement and stress on piezoelectric layer while the electrical response is obtained in current, voltage and power output. See-saw structure, when compared with conventional cantilever shows a betterment of 19.8, 13.3 and 23.3 % in displacement, charge and voltage sensitivity bandwidth product per unit volume respectively.