Investigating the feasibility of energy harvesting using material work functions. (2022)

• Record Type: Journal Article
• Authors: Kenzhekhanov, Torybek; Abduvali, Durbek; Kalimuldina, Gulnur; Adair, Desmond
• Is Part Of: Materials today. Volume 49:Part 6(2022)
• Page Start: 2501
• Page End: 2505
• Publication Date: 2022
• Subjects: Work function -- Vibrations -- Energy harvesting -- Piezoelectric -- Electrostatic; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2020.12.171
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: Electronic devices, with low power demand, can be energized using vibration energy harvesters which gather and transform energy from mechanical vibrations. This investigation looks at the feasibility of a method of energy harvesting from mechanical vibrations using the naturally occurring charging phenomenon within a system of two bodies which possess different work functions. In this work, a brief review of similar technologies, namely piezoelectric, electromagnetic and electrostatic energy harvesters is first given. This is followed by the development of a theoretical model and an investigation of different Work Function Energy Harvester (WFEH) operation modes, with conclusions on a possible optimum mode of operation. The design of an experiment to test the developed theory is then presented followed by some preliminary results. Generally it is found that a WFEH has potential for use in energy harvesting applications with the possibility of giving equal or better output power when compared to traditional electrostatic harvesters.