Multi-material Additive Manufacturing of Metamaterials with Giant, Tailorable Negative Poisson's Ratios

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dc.contributor.authorChen, Daen
dc.contributor.authorZheng, Xiaoyuen
dc.contributor.departmentMechanical Engineeringen
dc.date.accessioned2018-12-12T20:05:53Zen
dc.date.available2018-12-12T20:05:53Zen
dc.date.issued2018-06-14en
dc.description.abstractNature has evolved with a recurring strategy to achieve unusual mechanical properties through coupling variable elastic moduli from a few GPa to below KPa within a single tissue. The ability to produce multi-material, three-dimensional (3D) micro-architectures with high fidelity incorporating dissimilar components has been a major challenge in man-made materials. Here we show multimodulus metamaterials whose architectural element is comprised of encoded elasticity ranging from rigid to soft. We found that, in contrast to ordinary architected materials whose negative Poisson's ratio is dictated by their geometry, these type of metamaterials are capable of displaying Poisson's ratios from extreme negative to zero, independent of their 3D micro-architecture. The resulting low density metamaterials is capable of achieving functionally graded, distributed strain amplification capabilities within the metamaterial with uniform micro-architectures. Simultaneous tuning of Poisson's ratio and moduli within the 3D multi-materials could open up a broad array of material by design applications ranging from flexible armor, artificial muscles, to actuators and bio-mimetic materials.en
dc.description.notesWe thank Virginia Tech Mechanical Engineering Startup, ICTAS Junior Faculty Award and NSF_CMMI 1727492 for funding support.en
dc.description.sponsorshipVirginia Tech Mechanical Engineering Startup, ICTAS Junior Faculty Award; NSF_CMMI [1727492]en
dc.format.extent8 pagesen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1038/s41598-018-26980-7en
dc.identifier.issn2045-2322en
dc.identifier.other9139en
dc.identifier.pmid29904093en
dc.identifier.urihttp://hdl.handle.net/10919/86355en
dc.identifier.volume8en
dc.language.isoen_USen
dc.publisherSpringer Natureen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectmechanical metamaterialsen
dc.subjectthermal-expansionen
dc.subject3den
dc.subjectstereolithographyen
dc.subjectultralighten
dc.subjectbehavioren
dc.subjectmodelen
dc.titleMulti-material Additive Manufacturing of Metamaterials with Giant, Tailorable Negative Poisson's Ratiosen
dc.title.serialScientific Reportsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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Strategic Growth Area: Economical and Sustainable Materials (ESM)