Dynamic Self-Stiffening in Liquid Crystal Elastomers

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dc.citation.journalTitleNature Communicationsen_US
dc.citation.volumeNumber4en_US
dc.contributor.authorAgrawal, Adityaen_US
dc.contributor.authorChipara, Alin C.en_US
dc.contributor.authorShamoo, Yousifen_US
dc.contributor.authorPatra, Prabir K.en_US
dc.contributor.authorCarey, Brent J.en_US
dc.contributor.authorAjayan, Pulickel M.en_US
dc.contributor.authorChapman, Walter G.en_US
dc.contributor.authorVerduzco, Rafaelen_US
dc.date.accessioned2014-10-06T17:18:01Zen_US
dc.date.available2014-10-06T17:18:01Zen_US
dc.date.issued2013en_US
dc.description.abstractBiological tissues have the remarkable ability to remodel and repair in response to disease, injury and mechanical stresses. Synthetic materials lack the complexity of biological tissues, and man-made materials that respond to external stresses through a permanent increase in stiffness are uncommon. Here we report that polydomain nematic liquid crystal elastomers increase in stiffness by up to 90% when subjected to a low-amplitude (5%), repetitive (dynamic) compression. Elastomer stiffening is influenced by liquid crystal content, the presence of a nematic liquid crystal phase and the use of a dynamic as opposed to static deformation. Through rheological and X-ray diffraction measurements, stiffening can be attributed to a mobile nematic director, which rotates in response to dynamic compression. Stiffening under dynamic compression has not been previously observed in liquid crystal elastomers and may be useful for the development of self-healing materials or for the development of biocompatible, adaptive materials for tissue replacement.en_US
dc.identifier.citationAgrawal, Aditya, Chipara, Alin C., Shamoo, Yousif, et al.. "Dynamic Self-Stiffening in Liquid Crystal Elastomers." <i>Nature Communications,</i> 4, (2013) Nature Publishing Group: http://dx.doi.org/10.1038/ncomms2772.en_US
dc.identifier.doihttp://dx.doi.org/10.1038/ncomms2772en_US
dc.identifier.urihttps://hdl.handle.net/1911/77397en_US
dc.language.isoengen_US
dc.publisherNature Publishing Groupen_US
dc.rightsThis is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by the Nature Publishing Group.en_US
dc.titleDynamic Self-Stiffening in Liquid Crystal Elastomersen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpost-printen_US
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