Advanced Search

Dynamic chemical expansion of thin-film non-stoichiometric oxides at extreme temperatures

Research and Teaching Output of the MIT Community

Show simple item record Smith, James F. Swallow, Jessica Gabrielle Kim, Jae Jin Maloney, John Chen, Di Bishop, Sean Tuller, Harry L Van Vliet, Krystyn J 2017-12-07T19:16:40Z 2017-12-07T19:16:40Z 2017-05 2015-09
dc.identifier.issn 1476-1122
dc.identifier.issn 1476-4660
dc.description.abstract Actuator operation in increasingly extreme and remote conditions requires materials that reliably sense and actuate at elevated temperatures, and over a range of gas environments. Design of such materials will rely on high-temperature, high-resolution approaches for characterizing material actuation in situ. Here, we demonstrate a novel type of high-temperature, low-voltage electromechanical oxide actuator based on the model material Pr[subscript x]Ce[subscript 1−x]O[subscript 2−δ] (PCO). Chemical strain and interfacial stress resulted from electrochemically pumping oxygen into or out of PCO films, leading to measurable film volume changes due to chemical expansion. At 650 °C, nanometre-scale displacement and strain of >0.1% were achieved with electrical bias values <0.1 V, low compared to piezoelectrically driven actuators, with strain amplified fivefold by stress-induced structural deflection. This operando measurement of films ‘breathing’ at second-scale temporal resolution also enabled detailed identification of the controlling kinetics of this response, and can be extended to other electrochemomechanically coupled oxide films at extreme temperatures. en_US
dc.description.sponsorship United States. Department of Energy. Office of Basic Energy Sciences (Award DE-SC0002633) en_US
dc.description.sponsorship United States. Department of Energy (Grant DE-AC05-06OR23100) en_US
dc.language.iso en_US
dc.publisher Springer Nature en_US
dc.relation.isversionof en_US
dc.rights Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. en_US
dc.source Prof. Van Vliet via Erja Kajosalo en_US
dc.title Dynamic chemical expansion of thin-film non-stoichiometric oxides at extreme temperatures en_US
dc.type Article en_US
dc.identifier.citation Swallow, Jessica G. et al. “Dynamic Chemical Expansion of Thin-Film Non-Stoichiometric Oxides at Extreme Temperatures.” Nature Materials (May 2017): 4898 © 2017 Macmillan Publishers Limited, part of Springer Nature en_US
dc.contributor.department Massachusetts Institute of Technology. Department of Materials Science and Engineering en_US
dc.contributor.department Massachusetts Institute of Technology. Materials Processing Center en_US
dc.contributor.approver Vliet, Krystyn Van J. en_US
dc.contributor.mitauthor Swallow, Jessica Gabrielle
dc.contributor.mitauthor Kim, Jae Jin
dc.contributor.mitauthor Maloney, John
dc.contributor.mitauthor Chen, Di
dc.contributor.mitauthor Bishop, Sean
dc.contributor.mitauthor Tuller, Harry L
dc.contributor.mitauthor Van Vliet, Krystyn J
dc.relation.journal Nature Materials en_US
dc.identifier.mitlicense PUBLISHER_POLICY en_US
dc.eprint.version Author's final manuscript en_US
dc.type.uri en_US
eprint.status en_US
dspace.orderedauthors Swallow, Jessica G.; Kim, Jae Jin; Maloney, John M.; Chen, Di; Smith, James F.; Bishop, Sean R.; Tuller, Harry L.; Van Vliet, Krystyn J. en_US
dspace.embargo.terms N en_US

Files in this item

Name Size Format
Downloadable Full Text - PDF

This item appears in the following Collection(s)

Show simple item record

Open Access