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Published on: February 12, 2016
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3D polycatenated architected materials
Wenjie Zhou1, Sujeeka Nadarajah1, Liuchi Li2,3
1Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA, USA.
Science (New York, N.Y.)
|January 17, 2025
Summary
We introduce polycatenated architected materials (PAMs), discrete interlocked rings forming 3D networks. These novel materials exhibit tunable fluid-like and solid-like behaviors, responding to stimuli.
Area of Science:
- Materials Science
- Mechanical Engineering
- Nanotechnology
Background:
- Architected materials rely on continuous networks for mechanical properties.
- Designing materials with tunable responses is a key challenge.
Purpose of the Study:
- Introduce polycatenated architected materials (PAMs) with discrete interlocked rings.
- Develop a design framework for translating crystalline networks into PAMs.
- Explore the mechanical and stimuli-responsive properties of PAMs.
Main Methods:
- Propose a general design framework for PAMs.
- Analyze PAMs' behavior under shear loads (non-Newtonian fluid-like).
- Investigate PAMs' response to larger strains (lattice/foam-like).
- Demonstrate microscale shape changes in response to electrostatic charges.
Main Results:
- PAMs exhibit non-Newtonian fluid behavior (shear-thinning/thickening) controllable by topology.
- At larger strains, PAMs show nonlinear stress-strain relations.
- PAMs demonstrate stimuli-responsive shape morphing via electrostatic charges.
Conclusions:
- PAMs offer a new class of architected materials with unique properties.
- Their tunable mechanical responses and stimuli-responsiveness are significant.
- PAMs hold potential for advanced applications like energy absorption and morphing architectures.
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