Architected cellular ceramics with tailored stiffness via direct foam writing
Name
Muth-2017-Architected cellular ceramics with t.pdf
Size
1.48 MB
Format
Adobe PDF
Checksum (MD5)
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Author(s)
Muth, Joseph T.
Woish, Logan
Lewis, Jennifer A.
Dixon, Patrick Gerard
Gibson, Lorna J.
Date Issued
February 2017
Journal
Proceedings of the National Academy of Sciences
Publisher
National Academy of Sciences (U.S.)
Citation
Muth, Joseph T. et al. “Architected Cellular Ceramics with Tailored Stiffness via Direct Foam Writing.” Proceedings of the National Academy of Sciences 114, 8 (February 2017): 1832–1837 © 2017 National Academy of Sciences
Version
Final published version
Abstract
Hierarchical cellular structures are ubiquitous in nature because of their low-density, high-specific properties, and multifunctionality. Inspired by these systems, we created lightweight ceramic architectures composed of closed-cell porous struts patterned in the form of hexagonal and triangular honeycombs by direct foam writing. The foam ink contains bubbles stabilized by attractive colloidal particles suspended in an aqueous solution. The printed and sintered ceramic foam honeycombs possess low relative density (∼6%). By tailoring their microstructure and geometry, we created honeycombs with different modes of deformation, exceptional specific stiffness, and stiffness values that span over an order of magnitude. This capability represents an important step toward the scalable fabrication of hierarchical porous materials for applications, including lightweight structures, thermal insulation, tissue scaffolds, catalyst supports, and electrodes.
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Terms of Use
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.
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DOI of Published Version
https://doi.org/10.1073/pnas.1616769114
