期刊
ADVANCED FUNCTIONAL MATERIALS
卷 32, 期 1, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.202105128
关键词
architected lattices; cellular solids; mechanical metamaterials; programmable materials; soft matter
类别
资金
- National Science Foundation [DMR-2011754, DMREF-1922321]
- Vannevar Bush Faculty Fellowship Program - Basic Research Office of the Assistant Secretary of Defense for Research and Engineering through the Office of Naval Research [N00014-16-1-2823]
A new framework has been reported for realizing thermally programmable lattice architectures with tunable stiffness, Poisson's ratio, and deformation modes. The platform enables lightweight polymer lattices with programmable composition, architecture, and mechanical response.
Architected materials typically maintain their properties throughout their lifetime. However, there is growing interest in the design and fabrication of responsive materials with properties that adapt to their environment. Toward this goal, a versatile framework to realize thermally programmable lattice architectures capable of exhibiting a broader range of mechanical responses is reported. The lattices are composed of two polymeric materials with disparate glass transition temperatures, which are deterministically arranged via 3D printing. By tailoring the local composition and structure, architected lattices with tunable stiffness, Poisson's ratio, and deformation modes controlled through changes in the thermal environment are generated. The platform yields lightweight polymer lattices with programmable composition, architecture, and mechanical response.
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