Journal article

Measuring Piezoelectric Output-Fact or Friction?

Andris Sutka, Peter C Sherrell, Nick A Shepelin, Linards Lapcinskis, Kaspars Malnieks, Amanda V Ellis

Advanced Materials | Wiley | Published : 2020

Abstract

Piezoelectric polymers are emerging as exceptionally promising materials for energy harvesting. While the theoretical figures of merit for piezoelectric polymers are comparable to ceramics, the measurement techniques need to be retrofitted to account for the different mechanical properties of the softer polymeric materials. Here, how contact electrification, including friction and contact separation, is often mistaken for piezoelectric charge is examined, and a perspective for how to separate these effects is provided. The state of the literature is assessed, and recommendations are made for clear and simple guidelines in reporting, for both sample geometry and testing methods, to enable acc..

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Grants

Awarded by Australian Government through the Australian Research Council


Awarded by European Regional Development Fund within the Activity 1.1.1.2 "Post-doctoral Research Aid" of the Specific Aid Objective 1.1.1 "To increase the research and innovative capacity of scientific institutions of Latvia and the ability to attract external finan


Funding Acknowledgements

A.S. and P.C.S. equally contributed to this work. This research was supported by the Australian Government through the Australian Research Council's Linkage Projects funding scheme (LP160100071). L.L. and A.S. acknowledge Riga Technical University's Doctoral Grant and Research Excellence grant programs. This work has been supported by the European Regional Development Fund within the Activity 1.1.1.2 "Post-doctoral Research Aid" of the Specific Aid Objective 1.1.1 "To increase the research and innovative capacity of scientific institutions of Latvia and the ability to attract external financing, investing in human resources and infrastructure" of the Operational Programme "Growth and Employment" (No.1.1.1.2/VIAA/3/19/404).