Conductive liquid metal elastomer thin films with multifunctional electro-mechanical properties

dc.contributor.author Tahidul Haque, A. B. M.
dc.contributor.author Bartlett, Michael
dc.contributor.author Tutika, Ravi
dc.contributor.author Gao, Meng
dc.contributor.author Martinez, Angel
dc.contributor.author Mills, Julie
dc.contributor.author Clement, J. Arul
dc.contributor.author Gao, Junfeng
dc.contributor.author Tabrizi, Mohsen
dc.contributor.author Shankar, M. Ravi
dc.contributor.author Pei, Qibing
dc.contributor.author Bartlett, Michael
dc.contributor.department Materials Science and Engineering
dc.date 2020-10-21T19:12:15.000
dc.date.accessioned 2021-02-26T03:30:00Z
dc.date.available 2021-02-26T03:30:00Z
dc.date.copyright Wed Jan 01 00:00:00 UTC 2020
dc.date.issued 2020-09-28
dc.description.abstract <p>Wearable electronics, conformable sensors, and soft/micro-robotics require conductive yet stretchable thin films. However, traditional free standing metallic thin films are often brittle, inextensible, and must be processed in strict environments. This limits implementation into soft technologies where high electrical conductivity must be achieved while maintaining high compliance and conformability. Here we show a liquid metal elastomeric thin film (LET) composite with elastomer-like compliance (modulus < 500 kPa) and stretchability (> 700%) with metallic conductivity (sheet resistance < 0.1 Ω/square). These 30-70 um thin films are highly conformable, free standing, and display a unique Janus microstructure, where a fully conductive activated side is accompanied with an opposite insulated face. LETs display exceptional electro-mechanical characteristics, with a highly linear strain-resistance relationship beyond 700% deformation while maintaining a low resistance. We demonstrate the multifunctionality of LETs for soft technologies by leveraging the unique combination of high compliance and electrical conductivity with transfer capabilities for strain sensing on soft materials, as compliant electrodes in dielectric elastomeric actuator (DEA), and as resistive heaters for liquid crystal elastomer (LCE).</p>
dc.description.comments <p>This is a peer-reviewed, un-copyedited version of an article accepted for publication/published in <em>Multifunctional Materials</em>. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. DOI: <a href="https://doi.org/10.1088/2399-7532/abbc66" target="_blank">10.1088/2399-7532/abbc66</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/mse_pubs/391/
dc.identifier.articleid 1394
dc.identifier.contextkey 19896659
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath mse_pubs/391
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/96722
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/mse_pubs/391/2020_BartlettMichael_ConductiveLiquid.pdf|||Fri Jan 14 23:55:34 UTC 2022
dc.source.uri 10.1088/2399-7532/abbc66
dc.subject.disciplines Materials Science and Engineering
dc.subject.disciplines Metallurgy
dc.subject.disciplines Structural Materials
dc.title Conductive liquid metal elastomer thin films with multifunctional electro-mechanical properties
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication 999dcc7a-8d10-4781-b933-0571e461afce
relation.isOrgUnitOfPublication bf9f7e3e-25bd-44d3-b49c-ed98372dee5e
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