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dc.contributor.authorHong, Wei
dc.contributor.authorZhao, Xuanhe
dc.contributor.authorSuo, Zhigang
dc.date.accessioned2019-10-03T17:41:29Z
dc.date.issued2008
dc.identifier.citationHong, Wei, Xuanhe Zhao, and Zhigang Suo. 2008. “Drying-Induced Bifurcation in a Hydrogel-Actuated Nanostructure.” Journal of Applied Physics 104 (8): 84905. https://doi.org/10.1063/1.2996318.
dc.identifier.issn0021-8979
dc.identifier.issn1089-7550
dc.identifier.issn1520-8850
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:41467435*
dc.description.abstractHydrogels have enormous potential for making adaptive structures in response to diverse stimuli. In a structure demonstrated recently, for example, nanoscale rods of silicon were embedded vertically in a swollen hydrogel, and the rods tilted by a large angle in response to a drying environment [Sidorenko et al., Science 315, 487 (2007)]. Here we describe a model to show that this behavior corresponds to a bifurcation at a critical humidity, analogous to a phase transition of the second kind. The structure adapts to the drying environment in two ways. Above the critical humidity, the rods stand vertical, enabling the hydrogel to develop tension and retain water. Below the critical humidity, the rods tilt, enabling the hydrogel to reduce thickness and release water. We further show that the critical humidity can be tuned.
dc.language.isoen_US
dc.publisherAIP Publishing
dash.licenseLAA
dc.titleDrying-induced bifurcation in a hydrogel-actuated nanostructure
dc.typeJournal Article
dc.description.versionVersion of Record
dc.relation.journalJournal of Applied Physics
dash.depositing.authorSuo, Zhigang::05eeabf33acc4a9b3e438e297a95f5cb::600
dc.date.available2019-10-03T17:41:29Z
dash.workflow.comments1Science Serial ID 45028
dc.identifier.doi10.1063/1.2996318
dash.source.volume104;8
dash.source.page84905


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