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Functional stimuli responsive hydrogel devices by self-folding
Open accessAbstract
We describe a photolithographic approach to create functional stimuli responsive, self-folding, microscale hydrogel devices using thin, gradient cross-linked hinges and thick, fully cross-linked panels. The hydrogels are composed of poly ( N -isopropylacrylamide-co-acrylic acid) (pNIPAM-AAc) with reversible stimuli responsive properties just below physiological temperatures. We show that a variety of three-dimensional structures can be formed and reversibly actuated by temperature or pH. We experimentally characterized the swelling and mechanical properties of pNIPAM-AAc and developed a finite element model to rationalize self-folding and its variation with hinge thickness and swelling ratio. Finally, we highlight applications of this approach in the creation of functional devices such as self-folding polymeric micro-capsules, untethered micro-grippers and thermally steered micro-mirror systems.
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Forterre, Y., Skotheim, J. M., Dumais, J., & Mahadevan, L. (2005) · Nature · doi:10.1038/nature03185 · Cited by 1,093
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Metadata
- Authors
- Yoon, C., Xiao, R., Park, J., Cha, J., Nguyen, T. D., & Gracias, D. H.
- Venue
- Smart Materials and Structures
- Publisher
- IOP Publishing
- Published
- 2014-08-11
- Volume
- 23
- Issue
- 9
- Pages
- 094008
- ISSN
- 0964-1726 (ISSN-L)
- 1361-665X
- OpenAlex
- W2053958022
- Cited by
- 171
- References
- 1
- FWCI
- 17.14
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Yoon, C., Xiao, R., Park, J., Cha, J., Nguyen, T. D., & Gracias, D. H. (2014). Functional stimuli responsive hydrogel devices by self-folding. Smart Materials and Structures. https://doi.org/10.1088/0964-1726/23/9/094008
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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