Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 24, Issue 31, Pages 4905-4913Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201400451
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Funding
- Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy [DE-AC02-05CH11231]
- Laboratory Directed Research and Development Strategic Initiative program [11-SI-005]
- U.S. Department of Energy by Lawrence Livermore National Laboratory [DE-AC52-07NA27344]
- IM Review [LLNL-JRNL-646053]
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Three-dimensional printing of viscoelastic inks to create porous, elastomeric architectures with mechanical properties governed by the ordered arrangement of their sub-millimeter struts is reported. Two layouts are patterned, one resembling a simple cubic (SC)-like structure and another akin to a face-centered tetragonal (FCT) configuration. These structures exhibit markedly distinct load response with directionally dependent behavior, including negative stiffness. More broadly, these findings suggest the ability to independently tailor mechanical response in cellular solids via micro-architected design. Such ordered materials may one day replace random foams in mechanical energy absorption applications.
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